Flooyd's World

A quote

2011-04-23T23:13:00.000-07:00

".. there are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult."

-- Tony Hoare, 1980 ACM Turing Award Lecture.

Init implementation MVP in Flex / Action Scripts

2011-02-22T03:39:00.001-08:00

The motivation is MVP turns out to be less couple as well as more flexible that MVC in my opinion.

This init version have been done without taking into account "Event Bus".

Detail here.

Try to understand Git internal in one picture

2011-02-15T04:09:00.000-08:00

The image is actually origin from a cool book GitPro by adding a few comments in order to have all key point in one place hopefully...

How to do multiple row/column dimensions in OLAPDataGrid

2011-02-13T23:26:00.001-08:00

A simple OLAPDataGrid sample here.
A good sample having multiple dimensions here.

The key point is that OLAPSet could join each other.
For instance,
var customerSet:OLAPSet = new OLAPSet;
customerSet.addElements(cube.findDimension("CustomerDim").findAttribute("Customer").children);
var quarterSet:OLAPSet = new OLAPSet;
quarterSet.addElements(cube.findDimension("QuarterDim").findAttribute("Quarter").children);
colQueryAxis.addSet(quarterSet.crossJoin(customerSet));

How to Boot a System to Run Level S

2010-11-25T17:27:00.001-08:00

Type -s at the end of the boot entry line

Details

Dive into mercurial

2010-08-21T07:59:00.000-07:00

IMHO Mercurial is using the Tree structure idea to manipulate the so-called 'trunk/branches/tags' which probably because of its storage scheme revlog.

This tree has only one top (r0) and one end. In case this rule is being broken, merge comes in.

The following graph show a common scenario that one person change something base on r2.
After he make the change, revision goes to 6.
In Subversion, if person do update base on r5, he will get the change which is at r6.
Therefore Subversion need create another folder branches/tags to track change by name.

By contract, Mercurial will ask for merge because it predicates there are two headers r5 and r6 (broke the rules of that Tree).
After merge, new revision r7 created which has parent r5 and r6. (The storage schema revlog always doing append)
So the Tree has one end again.

Doing the change (commit) truns to be extending the tree by appeding nodes start from one specific node.

0 -> 1 -> 2 -> 3 -> 4 -> 5
-----------------> 6

My understanding of tag/branch in mercurial just give each node (revision) a name(alias).
While the branch tracks the change after being branched, tag does not do that.
Therefore we are able to check out any branches/tags without introducing extra folders.

Further reading including but not limit to storage scheme and examples.

"Operation" Enum

2010-08-10T07:02:00.001-07:00

public enum Operation {
    PLUS {
          double eval(double x, double y) { return x + y; }
    },
      MINUS {
        double eval(double x, double y) { return x - y; }
      },
    TIMES {
          double eval(double x, double y) { return x * y; }
    },
      DIVIDED_BY {
        double eval(double x, double y) { return x / y; }
      };
    // Perform the arithmetic operation represented by this constant
      abstract double eval(double x, double y);
    public static void main(String args[]) {
          double x = 2.0;
        double y = 4.0;
  
        for (Operation op : Operation.values())
            System.out.println(x + " " + op + " " + y + " = " + op.eval(x, y));
      }
}

The document says it is anticipated that the need for this will be rare and it it a bit tricky.
  How people think it is tricky?


Reference

Java Lang Spec

Increment/Decrement operators

2010-08-10T05:54:00.001-07:00

The increment/decrement operators can be applied before (prefix) or after (postfix) the operand.
The code result++; and ++result; will both end in result being incremented by one.
The only difference is thatthe prefix version (++result) evaluates to the incremented value,
whereas the postfix version (result++) evaluates to the original value.
If you are just performing a simple increment/decrement, it doesn't really matter which version you choose.
But if you use this operator in part of a larger expression, the one that you choose may make a significant difference.

The following program, PrePostDemo, illustrates the prefix/postfix unary increment operator:

class PrePostDemo {
     public static void main(String[] args){
            int i = 3;
	  i++;
  	  System.out.println(i);	// "4"
	  ++i;			   
  	  System.out.println(i);	// "5"
	  System.out.println(++i);	// "6"
  	  System.out.println(i++);	// "6"
	  System.out.println(i);	// "7"
       }
}

Reference

Java Language Basic

Refactoring StockWatcher in MVP

2010-06-13T00:15:00.001-07:00

GWT get started tutorial has a sample project StockWatcher and I got refactoring it in a MVP way.

Reference:
GWT get started
MVP Architecture

Dual Header at CentOS 5.4

2010-05-05T05:43:00.000-07:00

Host: CentOS 5.4
Laptop: Dell 630

Following second approach mentioned here.
I just replace local config with what the instruction said though I did not quit understand it.

Find my detail xorg.conf here.

'Swap' Win and Ctrl in Linux

2010-02-07T22:19:00.000-08:00

OS: CentOS 5.4

Add following line into $HOME/.Xmodmap: add control = Super_L
Add following line into $HOME/.xinitrc: /usr/bin/xmodmap $HOME/.Xmodmap

check xmodmap manual for more information.

OS: Ubuntu 10.x

Go into System -> Preferences -> Keyboard
Click on the "Layouts" tab and then click the "Layout Options" button.
Click on "Alt/Win key behavior"
Select "Control is mapped to Win keys (and the usual ctrl key).

Resize a VirtualBox Disk Image

2009-11-25T06:43:00.001-08:00

VirtualBox V3.0.8

Host: Windows XP

Guest: CentOS 5.4

Create new virtal disk at desired size
VBoxManage.exe clonehd --existing old.vdi new.vdi
Use resize tool like GParted to create new partition for unused space as ext3 in the new.vdi
use system-config-lvm to expand LogicVolumn with the new partition . (Command line is preferred)

   basic command in case the url is bad
   # lvm pvcreate /dev/sda5
   # lvm vgextend "MindbenderGroup" /dev/sda5

   Volume group "MindbenderGroup" successfully extended
   # lvm lvresize -l 2261 /dev/MindbenderGroup/MindbenderHome

   ;;; 2261 is calculated according to Free PE / Current LE show by lvm vgdiaply & lvm lvdisplay

   Extending logical volume MindbenderHome to 70.66 GB
   Logical volume MindbenderHome successfully resized

   # resize2fs /dev/MindbenderGroup/MindbenderHome

   Expend/resize Swap partition

   # swapoff -v /dev/VolGroup00/LogVol01
   # lvm lvresize /dev/VolGroup00/LogVol01 -L +256M

   # mkswap /dev/VolGroup00/LogVol01
   # swapon -va

   # cat /proc/swaps # free

Crawl Chinese web site with Scrapy

2009-09-26T18:48:00.001-07:00

The response return by Scrapy is a Python repr() object thus Chinese character 'display' in Unicode.

Quick fix is like this:
item['name'][0].encode('utf-8')
Though some characters are still display incorrectly.
Find source code here.

More about Unicode in Python:
http://evanjones.ca/python-utf8.html
http://www.b-list.org/weblog/2007/nov/10/unicode/

Trac quick setup

2009-09-18T05:10:00.001-07:00

Came across Trac while checking information of Scrapy and had a quick try.

Operation System is Ubuntu.

Operation performed:

Download package from official site
Follow INSTALL doc in the package to complete installation
Start Trac and visit Guide
Auth

basic auth
TODO other auth of adding register feature

Subversion

python Subversion module (ubuntu install script: apt-get install python-subversion)
"svnadmin create" Subversion repos and update trac.ini accordingly

Permission (Guide section TracPermissions)

Add permission TRAC_ADMIN to user in order to show the WebAdmin tab
WebAdmin is an Admin Web interface to perform admin operations

Roadmap
Component
TODO etc ...

Verify Binary Search result with duplicate target in the array

2009-09-03T21:27:00.000-07:00

Testing scenario: If testArray contains target at position n, then binarySearch (testArray, target) must return n
public void assertTheory4(int[] testArray, int target, int returnValue) {
assertEquals(getTargetPosition(testArray, target), returnValue);
}

public int getTargetPosition(int[] testArray, int target) {
for (int i = 0; i < testArray.length; i++)
if (testArray[i] == target)
return i;
return -1;
}

Array=[2, 11, 36, 66, 104, 108, 108, 108, 122, 155, 159, 161, 191]
target=108

Binary Search 108 will return 6 while getTargetPosition return 5.

Possible fix: Update the function getTargetPosition to return a int array, which contains all position of the value.
Then assert this return int array must contain binary search result.

Any others?

REFERENCE: SECTION 7.2 OF <BEAUTIFUL CODE>

NameCheck of XML Validation

2009-09-01T23:57:00.000-07:00

The beautiful part is build up a array with size 2^16, each value is 8bits, each bit indicate something like whether current character could be start of name, valid name.
For instance, number 4 is at 0x34 (decimal 52), so flags[52] = 0x0b (00001100), those 8bits 0/1 are indication.

Chapter 5 of <beautiful code> has the detail.

Patterns: Factory method,Template method and Strategy

2009-09-01T21:30:00.000-07:00

Basically, Factory method is a method that is defined in Parent class and is implemented in Child class, which usually is abstract method.

By contract, Template method is a method that implements an "algorithm". This implementation is usually defined in a "Parent" class and leveraging other methods including Factory methods. (See sample below)

public abstract class PizzaStore {
        /**
         * #templateMethod(String type) is an Template Method.
         * <p>
         * #factoryMethodOfInit() AND #factoryMethodOfCreate(String type) are both
         * Factory Method.
         */
        public Pizza templateMethod(String type) {

                factoryMethodOfInit();

                Pizza pizza = factoryMethodOfCreate(type);

                System.out.println("--- Making a " + pizza.getName() + " ---");
                pizza.prepare();
                pizza.bake();
                pizza.cut();
                pizza.box();
                return pizza;
        }

        protected abstract void factoryMethodOfInit();
        protected abstract Pizza factoryMethodOfCreate(String type);
}

Here is a definition:
Factory Method：
   Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.

Template Method：
   Define the skeleton of an algorithm in an operation, deferring some steps to subclasses. Template Method lets subclasses redefine certain steps of an algorithm without changing the algorithm's structure.
   (Here "lets subclasses redefine certain steps" could be done by leveraging Factory method)

Relationship: Factory Methods are often called by template methods.

Then the Strategy Pattern, Spring DI uses this pattern IMO somehow.

Check the updated PizzaStore version below, londonPizzaCreator and nYorkPizzaCreator are "Strategies" of PizzaCreator.
Then PizzaStore can change strategies at runtime regardless implementation detail by injecting various strategies. (via method setPizzaCreator)

public abstract class PizzaStore {

        private PizzaCreator pizzaCreator;

        public Pizza templateMethod(String type) {

                factoryMethodOfInit();

                Pizza pizza = pizzaCreator.createPizza(type);

                System.out.println("--- Making a " + pizza.getName() + " ---");
                pizza.prepare();
                pizza.bake();
                pizza.cut();
                pizza.box();
                return pizza;
        }
        protected abstract void factoryMethodOfInit();
        public void setPizzaCreator(PizzaCreator pizzaCreator) {
                this.pizzaCreator = pizzaCreator;
        }
}

// ---------------------------------------------------------------------------------- "Strategies"

public interface PizzaCreator {
        public Pizza createPizza(String type);
}

public class londonPizzaCreator implements PizzaCreator {
        public Pizza createPizza(String type) {
                // TODO add creat detail
                return null;
        }
}

public class nYorkPizzaCreator implements PizzaCreator {
        public Pizza createPizza(String type) {
                // TODO add creat detail
                return null;
        }
}

Strategy:
  Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.

Related to Template Method:
  Template methods use inheritance to vary part of an algorithm. Strategies use delegation to vary the entire algorithm.

What's more?
Those patterns are actually in different category in the book by GoF, trying to understand the reason therefore to understand their diff more clearly.

Tail Call Optimization

2009-08-19T21:41:00.001-07:00

A tail call is a subroutine call which is followed by a return to the calling code.

Tail calls are often optimized by interpreters and compilers of functional programming languages to more efficient forms of iteration.

See here and here.

Hello-Macro in Clojure

2009-08-19T01:20:00.001-07:00

If define the unless as function like this,
(defn unless [expr form] (if expr nil form))

Does that work?
(unless false (println "this should print"))
=> this should print
(unless true (println "this should not print"))
=> this should not print

Obviously the answer is no.

The reason is Clojure evaluates all the arguments before passing them to a function,
so the println is called before unless ever sees it.
So it seems Clojure is applicative order evaluation, but not normal order evaluation. (SICP exe. 1.5)

Therefore Macro.

(defmacro unless [expr form] (list 'if expr nil form))

Uninstall Oracle DB in Windows XP

2009-03-05T21:22:00.001-08:00

This article shows the detail.

But problem is the OUI failed to show all installed components...
After read this post, I got chance to read the inventory.xml by finding out that my Oracle DB was not appeared in the HOME LIST...

Everything went well once fix the inventory.xml manualy.

雨天

2009-02-22T06:53:00.000-08:00

还在继续。

人们似乎都不喜欢雨天，在言语上排斥，在心里面厌烦。
空气中弥漫着雨水，打湿了漂亮的装扮，'浸湿'了衣服和被子。

水气冲到了家里的每一个角落。

落在雨棚上的雨滴是一种噪音。

人们开始头痛，身体感到不适。

打开窗，深呼吸，清心舒畅。

空气中，树叶上，街道里，

雨水洗刷了灰尘，雨滴变成了音符。

路上行人寥寥，雨点拍打湖面，声音依稀可见。

人们开始微笑，心里发现平静。

为了看到雨后的清澈，人们每天快乐。

Firemacs

2009-02-18T21:38:00.001-08:00

Pretty cool Firefox addon.
https://addons.mozilla.org/en-US/firefox/addon/4141

Euler Problem 28

2009-01-13T05:42:00.000-08:00

problem 28

""" Mathmatics method
S1 = 1
S2 = 1 + 1 * (8*2*2 - 2 + 6) * 2 / 3 = 1 + 24 = 25
Sn = S1 + (Pn-1 + n-1) + (Pn-1 + (n-1)*2) + (Pn-1 + (n-1)*3) + (Pn-1 + (n-1)*4)
= S1 + 4 * Pn-1 + (2*n - 2)*10
= S1 + 16*{ sigma:X^2 | n-1 >= X >= 1 } + 4*{ sigma:X | n-1 >= X >= 1 } + 4*(n-1)
= S1 + (n-1) * (8*n*n - n + 6) * 2 /3
;;; Pn is the top-right element
P1 = 1
Pn = (2*n - 1)^2
;;; spiral number
s = 2*n - 1
;;;
for 1001 by 1001 spiral, 1001 = 2*n - 1 => n=501
thus S501 = S1 + 500 * (8*501*501 - 501 + 6) * 2 / 3
"""

VIM Commands learned

2009-01-06T05:33:00.000-08:00

-- move the windows
CTRL-W K move window to the top
CTRL-W H move window to the far left
CTRL-W J move window to the bottom
CTRL-W L move window to the far right

-- Editing Mulitple Files
# is particularly useful with :e, since it allows you to switch back and forth between two files easily
you could save a second version of the file letter with the command: :w %.new
With the CTRL-O and CTRL-I command you
can go to cursor positions before older jumps, and back again.

-- Registers
["x]yy Copy line into register x
How to type(type four characters one by one): "xyy

-- Mark
m x Mark current position with x (x can be any letter). See 'help mark'

-- Parse select content to search
Yank the selected content; start search by type /; Ctrl-r with "

Decode Characters in Python

2008-12-08T23:15:00.000-08:00

class CP037Decoder:
_CHARSET_ = 'cp037'
def __init__(self, message):
self.decode_message = unicode(message, self._CHARSET_)

def show_in_utf8(self):
print self.decode_message.encode('utf8')

if __name__ == '__main__':
msg_file = open(sys.argv[1], 'r')
CP037Decoder(msg_file.read()).show_in_utf8()
msg_file.close()

Interview with Donald Knuth

2008-10-19T17:15:00.001-07:00

http://www.informit.com/articles/article.aspx?p=1193856

Hermes vs Oracle AQ

2008-10-12T18:10:00.001-07:00

1. Need a wrapped connect factory, see here. And package it into a jar, like oracleaq-factory.jar
2. How to in Hermes:

     2.1 add a new provider including those jars: aqapi.jar, jms.jar, jta.jar, ojdbc.jar and oracleaq-factory.jar
     2.2 create a new session for AQ topic (EAB_DEMO_QUEUE here):
    <factory classpathId="OracleAQ">
        <provider className="com.freizl.OracleAQFactory">
            <properties>
                <property name="hostName" value="vlinux"/>
                <property name="password" value="demoq"/>
                <property name="sid" value="XE"/>
                <property name="userName" value="demoq"/>
            </properties>
        </provider>
        <connection clientID="" connectionPerThread="false">
            <session audit="false" checkSize="false" checkSizePeriod="0" id=" OralceAQ_Local" reconnects="0" transacted="true" useConsumerForQueueBrowse="false"/>
        </connection>
        <destination domain="2" durable="false" name="EAB_DEMO_QUEUE"/>
        <extension className="hermes.ext.DefaultHermesAdminFactory">
            <properties/>
        </extension>
    </factory>

3. Double click the topic under the session, EAB_DEMO_QUEUE here, to connect to the topic.
    Hermes will create a new subscriber for this topic.
    And once there's message push into this topic, it will be display in the Hermes. (not consume, just browser).

Interactive with AQ Topic in Java

2008-09-21T19:19:00.000-07:00

import static org.junit.Assert.assertNotNull;
import java.util.Calendar;
import javax.jms.Message;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.Topic;
import oracle.jms.AQjmsAgent;
import oracle.jms.AQjmsFactory;
import oracle.jms.AQjmsSession;
import oracle.jms.AQjmsTextMessage;
import oracle.jms.AQjmsTopicPublisher;
import oracle.jms.AQjmsTopicReceiver;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class TestOracleAQ {

private static final String AQ_TOPIC = "ESB_DEMO_QUEUE";
/** AQ Server Connection */
private static final String HOST_NAME = "VLINUX";
private static final String SID = "XE";
private static final int CONNECT_PORT = 1521;
private static final String CONNECT_TYPE = "thin";
private static final String AQ_USER = "DEMOQ";
private static final String AQ_PASSWD = "DEMOQ";

private QueueConnectionFactory qcf = null;
private AQjmsSession jmsSession = null;
private QueueConnection qc = null;
private Topic topic = null;

@Before
public void setUp() throws Exception {
qcf = AQjmsFactory.getQueueConnectionFactory(HOST_NAME, SID,
CONNECT_PORT, CONNECT_TYPE);
qc = qcf.createQueueConnection(AQ_USER, AQ_PASSWD);
qc.start();
jmsSession = (AQjmsSession) qc.createQueueSession(true, 0);
/* for single consumer AQ */
// q = ((AQjmsSession) qs).getQueue("DEMOQ", "ESB_DEMO_QUEUE");
/* for multiple consumer AQ */
topic = jmsSession.getTopic(AQ_USER, AQ_TOPIC);
}

@After
public void tearDown() throws Exception {
jmsSession.close();
qc.stop();
qcf = null;
}

@Test
public void testReceive() throws Exception {
String subscriberId = "RECIPIENT";
AQjmsTopicReceiver receiver = jmsSession.createTopicReceiver(topic,
subscriberId, null);
Message msg = receiver.receive(200);
assertNotNull(msg);
/* a AQjmsTextMessage Type */
System.out.println(msg);
AQjmsTextMessage jmsMsg = (AQjmsTextMessage) msg;
/* User Data */
System.out.println(jmsMsg.getText());
}

@Test
public void testProduceToSpecificSubscriber() throws Exception {
AQjmsTopicPublisher publisher = (AQjmsTopicPublisher) jmsSession
.createPublisher(topic);
AQjmsTextMessage jmsMsg = new AQjmsTextMessage();
jmsMsg.setJMSTimestamp(Calendar.getInstance().getTime().getTime());
jmsMsg.setText("I am a message from junit test to simon... "
+ Calendar.getInstance().getTime());
AQjmsAgent[] demoSimon = { new AQjmsAgent() };
String subscriberId = "DEMOAQ_SIMON";
demoSimon[0].setName(subscriberId);
publisher.publish(jmsMsg, demoSimon);
jmsSession.commit();
}

@Test
public void testProduceToAllSubscriber() throws Exception {
AQjmsTopicPublisher publisher = (AQjmsTopicPublisher) jmsSession
.createPublisher(topic);
AQjmsTextMessage jmsMsg = new AQjmsTextMessage();
jmsMsg.setJMSTimestamp(Calendar.getInstance().getTime().getTime());
jmsMsg.setText("I am a message from junit test to all subscriber... "
+ Calendar.getInstance().getTime());
publisher.publish(jmsMsg);
jmsSession.commit();
}

}

Erich Gamma Discusses Jazz, Eclipse, JUnit and Design Patterns

2008-09-21T19:14:00.001-07:00

http://www.infoq.com/interviews/gamma-jazz-eclipse-junit-design-patterns

Set programs installed in Windows Program files folder to PATH (Cygwin)

2008-08-19T01:50:00.001-07:00

VIM_HOME='/cygdrive/c/Program Files/Vim/vim72'
JAVA_HOME='/cygdrive/c/Program Files/Java/jdk1.5.0_11'

alias ll="ls -lh"
alias l="ls -a"

PATH="${VIM_HOME}":"${JAVA_HOME}/bin":${PATH}
export PATH

The quote and double quote play the magic..

Compare ', #' and ` in LISP

2008-08-14T00:10:00.001-07:00

quote '
is syntactic sugar for QUOTE, which takes a single expression as its "argument" and simply returns it, unevaluated.
(quote (+ 1 2)) === '(+ 1 2)

#'
is syntactic sugar for FUNCTION.
(function foo) === #'foo

backquote `
a backquoted expression is similar to a quoted expression except you can "unquote" particular subexpressions by preceding them with a comma, possibly followed by an at (@) sign.
   [Basicly it's similar with quote ', but can do more, like evaluate subexpressions by a comma]
Without an at sign, the comma causes the value of the subexpression to be included as is.
With an at sign, the value--which must be a list--is "spliced" into the enclosing list.

<Examples>
Backquote Syntax   Equivalent List-Building Code           Result
`(a (+ 1 2) c)       (list 'a '(+ 1 2) 'c)                   (a (+ 1 2) c)
`(a ,(+ 1 2) c)       (list 'a (+ 1 2) 'c)                   (a 3 c)
`(a (list 1 2) c)   (list 'a '(list 1 2) 'c)               (a (list 1 2) c)
`(a ,(list 1 2) c)   (list 'a (list 1 2) 'c)                   (a (1 2) c)
`(a ,@(list 1 2) c)   (append (list 'a) (list 1 2) (list 'c))   (a 1 2 c)

Reset Root Password of OpenBSD

2008-08-06T17:58:00.001-07:00

At boot> prompt type boot -s to boot into single user mode:
boot> boot -s

Next you will see a message as follows:
Enter pathname of shell or RETURN for sh:
Just hit [Enter] key to load sh shell.

Mount / and /usr file system in read-write mode:
# mount -uw /
# mount /usr

Finally set or change the password for root user, enter:
# passwd

Press CTRL+D to boot into multiuser mode or just reboot server:
# reboot

Notes from

2008-07-31T07:43:00.000-07:00

From the book <Elements of Java Style>

62. Describe why the code is doing what it does, not what the code is doing.

70. Define subclasses so they may be used anywhere their superclasses may be used.
The Liskov Substitution Principle
The Open-Closed Principle

100. Use lazy initialization
class PersonalFinance {
private LoanRateCalculator loan = null;
public LoanRateCalculator getLoan(){
if (this.loan == null) {
this.loan = new LoanRateCalculator();
}
return this.loan;
}
}

Packaging Conventions
104.Place types that are commonly used, changed, and released together, or
mutually dependent on each other, into the same package.
- The Common Reuse Principle
- The Common Closure Principle
- The Resue/Release Equivalence Principle
- The Acyclic Dependencies Principle

105. Isolate volatile classes and interfaces in separate packages.
volatile := something likely to change

Switching Control and Caps Lock on Windows(For Emacs)

2008-07-28T21:24:00.001-07:00

I didn't know I can do this till my colleague told me when he saw I'm playing Emacs. "Your small figure will probably feel bad after you doing too much in Emacs", he said, "Try to switch the Control and Caps Lock." Sounds interesting! I google the solution and it makes life easier in Emacs. But not very convenient out of Emacs.

key points: add a new field to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout with name : Scancode Map
and type : Binary Value and value : 00000000 00000000 03000000 3A001D00 1D003A00 00000000

details

;;; Updated
use autohotkey turns out to be more convenient. (swap control with Win key)
LWin::Control
LControl::LWin

Olympics 2008, Welcome to Beijing

2008-07-26T10:24:00.001-07:00

北京欢迎你
词：林夕　　曲：小柯

迎接另一个晨曦，带来全新空气
气息改变情味不变，茶香飘满情谊
我家大门常打开，开放怀抱等你
拥抱过就有了默契，你会爱上这里
不管远近都是客人请不用客气
相约好了在一起，我们欢迎你
我家种着万年青，开放每段传奇
为传统的土壤播种，为你留下回忆
陌生熟悉都是客人请不用拘礼
第几次来没关系，有太多话题
北京欢迎你，为你开天辟地
流动中的魅力充满着朝气
北京欢迎你，在太阳下分享呼吸
在黄土地刷新成绩
我家大门常打开，开怀容纳天地
岁月绽放青春笑容，迎接这个日期
天大地大都是朋友请不用客气
画意诗情带笑意，只为等待你
北京欢迎你像音乐感动你
让我们都加油去超越自己
北京欢迎你，有梦想谁都了不起
有勇气就会有奇迹
北京欢迎你，为你开天辟地
流动中的魅力充满着朝气
北京欢迎你，在太阳下分享呼吸
在黄土地刷新成绩
北京欢迎你，像音乐感动你
让我们都加油去超越自己
北京欢迎你，有梦想谁都了不起
有勇气就会有奇迹
我家大门常打开开放怀抱等你
拥抱过就有了默契，你会爱上这里
不管远近都是客人请不用客气
相约好了在一起，我们欢迎你
北京欢迎你为你开天辟地
流动中的魅力充满着朝气
北京欢迎你，在太阳下分享呼吸
在黄土地刷新成绩
我家大门常打开开怀容纳天地
岁月绽放青春笑容迎接这个日期
天大地大都是朋友请不用客气
画意诗情带笑意，只为等待你许茹芸
北京欢迎你，像音乐感动你
让我们都加油去超越自己游鸿明
北京欢迎你，有梦想谁都了不起
有勇气就会有奇迹金海心
北京欢迎你，为你开天辟地
流动中的魅力充满着朝气
北京欢迎你，在太阳下分享呼吸
在黄土地刷新成绩
北京欢迎你，像音乐感动你
让我们都加油去超越自己
北京欢迎你，有梦想谁都了不起
有勇气就会有奇迹付丽珊
北京欢迎你，有梦想谁都了不起
有勇气就会有奇迹
北京欢迎你有梦想谁都了不起
有勇气就会有奇迹

Vim Commands

2008-07-22T05:36:00.000-07:00

Select the match in the complete list
CTRL-N / CTRL-P

Differs from 'j'/'k' when lines wrap
map gk
map gj

Option for 'smart search'
set ignorecase smartcase

\C := case sensitive
\c := case insensitive

Offsets (when searching)
/default/2
/const/b+2
/const/e+1

Install Subversion in Ubuntu Server

2008-07-20T20:54:00.001-07:00

https://help.ubuntu.com/8.04/serverguide/C/subversion.html

Enable/Disable Apache Mod:
a2enmod/a2dismod

"Instance" an Interface (Java)

2008-07-20T05:26:00.001-07:00

It looks like "instance" an Interface...

import static org.junit.Assert.assertTrue;

import org.junit.Test;

public class InterestingTests {

   @Test
   public void TestConstructInterface() {
        TurnstileController controller = new TurnstileController() {
            private boolean lockState = false;
            private boolean unlockState = false;

            public void lock() {
                lockState = true;
            }

            public void unlock() {
                unlockState = true;
            }

            public boolean isLockState() {
                return lockState;
            }

            public boolean isUnlockState() {
                return unlockState;
            }
        };
        controller.lock();
        assertTrue(controller.isLockState());
        controller.unlock();
        assertTrue(controller.isUnlockState());
   }

   private interface TurnstileController {
        public void lock();
        public void unlock();
        public boolean isLockState();
        public boolean isUnlockState();
   };

}

My Network Config of (Sun)VirtualBox

2008-07-17T20:34:00.000-07:00

Host: Windows XP
Guest: ubuntu 8.04 Server

VirtualBox Network Config:

ubuntu network config:

Why eth1 has address 169.254.4.130 ?
Actually it depends.
Start the VirtualBox with two network adapters and check all IP address in your host.
You'll see the IP address of the adapter for VirtualBox, then set the eth1 IP address accordingly.

Install SVN as Windows Service

2008-07-16T17:25:00.001-07:00

sc create svn binpath= "\"C:\svn-win32-1.4.4\bin\svnserve.exe\" --service -r C:\Workspace\SVN\repos" displayname= "Subversion Server" depend= Tcpip start= auto

net start svn

Something in Generic Programming

2008-07-16T06:33:00.001-07:00

-- difference between raw type list and wildcard type list
You can put any element into a collection with a raw type, easily corrupting the collections type invariant. you cant put any element(other than null) into a Collection<?>. Attempting to do so will generate a compile-time error message.

-- parametrized types are invariant.
In other words, for any two distinct types Type1 and Type2, List<Type1> is either a subtype nor a supertype of List<Type2>.

test class in java

Simple Sample of Regular Expression in Python

2008-07-11T03:50:00.000-07:00

import re

def read_file():
file_name = 'merge.log'
file = open(file_name, 'r')
file_content = file.read()
patterns = re.compile(r'(r\d{5}\s\|\scn-cma)(.*(?!cn-cma).*)(r\d{5}\s\|\s(?!cn-cma))', re.DOTALL)
results = patterns.search(file_content)
#results = patterns.match(file_content)
print dir(results)
if results :
results = results.groups()
print results[0]
def display(x):
print '$' * 50, '\n', x
#[ display(x) for x in results ]
file.close()

merge.log

JSE5, New Language Features Introduce by Joshua Bloch

2008-07-07T20:16:00.000-07:00

(For me), it's a good overview introduce of JSE5 new feature.
http://java.sun.com/features/2003/05/bloch_qa.html
Any other advance articles?

Clean Up Ubuntu Grub Menu after Updates

2008-07-05T08:19:00.001-07:00

change the file: /boot/grub/menu.lst

details here

Links for Blackberry

2008-07-02T04:56:00.001-07:00

gmail : http://gmail.com/app
miniopera : http://mini.opera.com

Update System
0. prerequisites
1. rename/rm Vendor.xml in "program files"/"Common Files"/"Research In Motion"/AppLoader
2. loader.exe /nojvm will start the application installation.

Lexically Function Scrop

2008-07-01T06:08:00.001-07:00

The following definition help to understand why need closure implement in JavaScript.

Functions in JavaScript are lexically rather than dynamically scoped. This means that they run in the scope in which they are defined, not the scope from which they are executed.

VIM Commands

2008-06-18T07:08:00.001-07:00

command line editing:
<C-Left>, <C-Rigth>, <C-B>, <C-E>
# also work in the insert model
<C-W>         := Delete a word
<C-U>         := Remove all texts

command line complete:
tab, <C-P>
<C-D>            := list match
q:            := open command window

Session:
:mksession vimbook.vim    := create a session
:source vimbook.vim        := restore a session
vim -S vimbook.vim        := open vim with session

Explore files:
:e .
type <ENTER> to open file
<C-O> or :edit . to return back
o, i, s, x, r

Find a file:
set path+=./Workspace
:sfind **/svn_tool.py

Completing Specific Items(X Model):
C-X C-F :=    file names
C-X C-L :=    whole lines
C-X C-V :=    Vim command line
C-X C-O :=    Omni complete(Complete in source code, similar with C-SPACE in Eclipse)
C-X C-E
C-X C-Y :=    insert model scroll

Digraphs:
:digraphs :=        Special characters that are not on keyboard

Normal mode commands:
execute any Normal model command from Insert mode by using <C-O> {command}

HighLight Current Line in GVim 7

2008-05-21T22:16:00.001-07:00

augroup vim7highlightCurrentLineInActiveWindow
au WinEnter * if g:HighlightCurrentLine | setlocal cul | endif
au WinLeave * if g:HighlightCurrentLine | setlocal nocul | endif
augroup end
function! s:ToggleHighlightCurrentLine()
if !exists('g:HighlightCurrentLine') || g:HighlightCurrentLine==0
    setlocal cul
    let g:HighlightCurrentLine=1
else
    setlocal nocul
    let g:HighlightCurrentLine=0
endif
endfunction
command! ToggleHighlightCurrentLine :call <sid>ToggleHighlightCurrentLine()
call <sid>ToggleHighlightCurrentLine()

More information.

Set External Diff of SVN as gvimdiff (ubuntu)

2008-05-13T06:55:00.001-07:00

SVN Config: /etc/subversion/config
diff-cmd = /home/username/diffwrap.sh

diffwrap.sh (make sure it's executable.)
#!/bin/sh
# Configure your favorite diff program here.
DIFF="/usr/bin/gvimdiff"
# Subversion provides the paths we need as the sixth and seventh
# parameters.
LEFT=${6}
RIGHT=${7}
# Call the diff command (change the following line to make sense for
# your merge program).
$DIFF $LEFT $RIGHT
# Return an errorcode of 0 if no differences were detected, 1 if some were.
# Any other errorcode will be treated as fatal.

Set External Diff of SVN as gvimdiff (Windows)

2008-05-12T20:44:00.001-07:00

svn config (usually in: c:\Document and Settings\Application\Subversion\config)
diff-cmd = c:/diffwrap.bat

c:/diffwrap.bat
@ECHO OFF
REM Configure your favorite diff program here.
SET DIFF="C:\Program Files\Vim\vim71\gvim.exe"
REM Subversion provides the paths we need as the sixth and seventh REM parameters.
SET LEFT=%6
SET RIGHT=%7
REM Call the diff command (change the following line to make sense for
REM your merge program).
%DIFF% -d %LEFT% %RIGHT%
REM Return an errorcode of 0 if no differences were detected, 1 if some were.
REM Any other errorcode will be treated as fatal.

vim diff option
set diffopt+=iwhite
set diffopt+=horizontal

An Abstract Class when using DBUnit

2008-05-05T01:32:00.001-07:00

http://sites.google.com/site/freizl/Home/java-code/sampledbunittest

Concert by Secret Garden

2008-04-27T22:36:00.001-07:00

For me, they are awesome!
I know the Secret Garden almost ten years ago. I'm really being attractive by their music for long period.
And I couldn't image I can ever get a chance to enjoy their music in live.
As Sherry said, even we are speaking in different language, but tonight we communicate with music.

Last Saturday, I spend several hours having a quick practice the Django, which is a web framework wrote in Python.
The documents in the home site it good. It didn't take me much time to set up the environment.
As I already have Apache and MySQL installed, I just need the related python mod.
Then downloaded the latest DJango stable package, installed and started the embed server. That's it.
Also I tried the simple sample in the "get start" document.
But till now, I can't see any benefits by using Django and Python to build a web app.
Comparing with Java, it turns out to be much simpler, but not with Groovy and PHP.
As for keeping learning the Python, I probably want to take a look into the CMS project PyLucid.

Quotes from Pragmatic Programming

2008-04-17T05:50:00.001-07:00

Tip4: Don't live with Broken Windows
"....You may be thinking that no one has the time to go around cleaning up all the broken glass of a project. If you continue to think like that, then you'd better plan on getting a dumpster, or moving to another neighborhood. Don't let entropy win."

Tip5: Be a catalyst for Change
[The stone soup story]

Basically I think I experience the negative thing which is described in the Tip4.
Looks like interesting and I need to think about doing better thing.

Install Taglist Vim plugin

2008-04-16T07:56:00.001-07:00

Home Page: http://vim-taglist.sourceforge.net/
Installation: http://vim-taglist.sourceforge.net/installation.html

The _vimrc setting for taglist:
filetype on
let Tlist_Ctags_Cmd = 'C:\MyWorkplace\ctags57\ctags.exe'
let Tlist_Exit_OnlyWindow = 1
let Tlist_Sort_Type = "name"
nnoremap <silent> <F8> :TlistToggle<CR>
" Shortcut for switch between split windows quickly
nnoremap H <C-W><C-H>
nnoremap L <C-W><C-L>

Java and Modern Web

2008-04-16T06:57:00.001-07:00

http://andigutmans.blogspot.com/2008/03/java-is-losing-battle-for-modern-web.html

Virtual Community

2008-04-14T06:27:00.001-07:00

Several days ago,I started to "live" in the Facebook and Douban(CN), which are both so called virtual community as far as I know.
It's even interesting to myself why I got a idea to start to experience those sites.
The Douban is ok and it's all about sharing informations on books, music and movies.
And several other sections, like blog and 'Channels' provide many things as well.
The Facebook turns out to be COOL! I met several colleagues and looks like there will be more interesting things.

My Facebook Profile: Simon Wu
My Douban: 海生
Email: freizl@gmail.com

map, iterate function list, time in python

2008-04-03T20:34:00.000-07:00

from __future__ import division

def prime1(y):
if y <= 1:
print y, 'not prime'
else:
x = y // 2
while x > 1:
if y % x == 0:
retValue = y, 'has factor', x
break
x -= 1
else:
retValue = y, 'is prime'

def timer(reps, func, *args):
import time
start = time.clock()
for i in xrange(reps):
map(func, args)
return time.clock() - start

for func in (prime1,):
print timer(10000, func, 12,15,18,20,22,30)

download file

Mirro the Wikipedia at your local

2008-03-22T23:46:00.000-07:00

sudo apt-get update
sudo apt-get install apache2 php5 libapache2-mod-php5 mysql-server mysql-client php5-mysql phpmyadmin
mkdir ~/wiki/
cd ~/wiki/
wget http://download.wikimedia.org/mediawiki/1.10/mediawiki-1.10.0.tar.gz
sudo mkdir /var/www/w/
sudo tar xzf mediawiki-1.10.0.tar.gz -C /var/www/
cd /var/www/mediawiki-1.10.0/
sudo chmod a+x config

$ mysql
mysql> USE mysql;
mysql> UPDATE user SET Password=PASSWORD(’new-password’) WHERE user=’root’;
mysql> FLUSH PRIVILEGES;

add user 'wikiuser' and database 'wikidb' and set privileges

wget http://download.wikimedia.org/enwiki/20070402/enwiki-20070402-pages-articles.xml.bz2
bunzip2 -k enwiki-20070402-pages-articles.xml.bz2
wget http://modzer0.cs.uaf.edu/~dev2c/mwimport.sh (OR http://freizl.googlepages.com/mwimport.sh)
chmod +x mwimport.sh

increase Default_Allowed_Packet for MySQL in MySQL configurate file
cat enwiki-20070402-pages-articles.xml | ./mwimport.sh | mysql -f -uwikiuser -ppassword wikidb

refreshLinks: php mediawiki/maintenance/refresheLinks.php (Not sure if it is necessary.)

Detail Infor.

Static Field/Method, Initialization Block Cont. (Java Disassemble)

2008-03-20T06:08:00.001-07:00

Disassembles class files:
javap -c BaseObject

Static Field/Method, Initialization Block Cont. (Java Disassemble)

2008-03-20T06:08:00.000-07:00

Disassembles class files:
javap -c BaseObject

Static Field/Method, Initialization Block Cont. (After compile)

2008-03-19T19:14:00.001-07:00

package com.foo;

import java.io.PrintStream;
import org.apache.commons.lang.builder.ReflectionToStringBuilder;

public class BaseObject
{

private static long second = 0L;
private String name;

public BaseObject()
{
name = "";
System.out.println("I am class block initialization.");
second++;
System.out.println("I am constructor.");
}

public BaseObject(String name)
{
this.name = "";
System.out.println("I am class block initialization.");
this.name = name;
second++;
}

public String getName()
{
return name;
}

public void setName(String name)
{
this.name = name;
}

public static long getSecond()
{
return second;
}

public static void setSecond(long second)
{
second = second;
}

public String toString()
{
return ReflectionToStringBuilder.toString(this);
}

public static void main(String args[])
{
System.out.println(getSecond());
BaseObject bo1 = new BaseObject("First One");
BaseObject bo2 = new BaseObject("Seconde One");
BaseObject bo3 = new BaseObject("Third One");
System.out.println((new StringBuilder()).append(bo1).append("__").append(getSecond()).toString());
System.out.println((new StringBuilder()).append(bo2).append("__").append(getSecond()).toString());
System.out.println((new StringBuilder()).append(bo3).append("__").append(getSecond()).toString());
}

static
{
System.out.println("I am static block initialization.");
}
}

Static Field/Method, Initialization Block (Java)

2008-03-19T19:12:00.001-07:00

package com.foo;
import org.apache.commons.lang.builder.ReflectionToStringBuilder; public class BaseObject { /** a static field; all object of this class share this variable. */ private static long second = 0; private String name = ""; { System.out.println("I am class block initialization."); } static { System.out.println("I am static block initialization."); } public BaseObject() { super(); second++; System.out.println("I am constructor."); } public BaseObject(String name) { super(); this.name = name; second++; } public String getName() { return name; } public void setName(String name) { this.name = name; } public static long getSecond() { return second; } public static void setSecond(long second) { BaseObject.second = second; } @Override public String toString() { // jakarta lang toString utility return ReflectionToStringBuilder.toString(this); } public static void main(String[] args) { System.out.println(BaseObject.getSecond()); BaseObject bo1 = new BaseObject("First One"); BaseObject bo2 = new BaseObject("Seconde One"); BaseObject bo3 = new BaseObject("Third One"); System.out.println(bo1 + "__" + BaseObject.getSecond()); System.out.println(bo2 + "__" + BaseObject.getSecond()); System.out.println(bo3 + "__" + BaseObject.getSecond()); } // expected result: /* I am static block initialization. 0 I am class block initialization. I am class block initialization. I am class block initialization. com.foo.BaseObject@19821f[name=First One]__3 com.foo.BaseObject@190d11[name=Seconde One]__3 com.foo.BaseObject@a90653[name=Third One]__3 */ }

Vim commands

2008-03-19T19:09:00.001-07:00

-----------------------------------------------------------------------------------------------
" could be in startup setting
:ab MAA multiAccountAlert # define a abbreviations
:map <F7> :w!<CR> # define a shortcut

-----------------------------------------------------------------------------------------------
" useful tips
<C-V> then select "column(s)" with motion commands (win32 <C-Q>)
<C-R><C-W> : pull word under the cursor into a command line or search; i.e: <ESA> -> / -> then this command
<C-R><C-A> : pull WORD under the cursor into a command line or search

:n1,n2 d # delete content between line n1 and n2
:n1,n2 co n3 #copy content between line n1 and n2 under line n3
:n1,n2 move n3 # move content

-----------------------------------------------------------------------------------------------
recording macro in VIM

Back to Hangzhou

2008-02-27T20:27:00.001-08:00

At this moment...what can I recall about those two months...

And we are leaving at 4 AM and arrive at Shanghai at 6pm.

Runnning Warcraft 3 in Widescreen

2008-01-31T23:01:00.000-08:00

START > run > regedit
locate to:
HKEY_CURRENT_USER > Software > Blizzard Entertainment > Warcraft III > Video

Make below change in decimal format:
(Right click > Change > select "decimal" > fill in new value)
resheight = 1600
reswidth = 900

Replace width & height with whatever resolution you wanna play in, examples:
1280x720 16:9 Widescreen
1440x900 16:10 Widescreen
1680x1050 16:10 Widescreen
1920x1200 16:10 Widescreen

For Details

Custom WebWork Result Type

2008-01-27T15:59:00.001-08:00

add following to a xwork.xml config file:
<result-types> <result-type name="mydispatch" class="com.company.portal.util.MyDispatch" default="true"/> <result-type name="my2dispatch" class="MyDispatch" default="true"/> </result-types>

use this custom type in the action:
<action name="mydispatch" class="myPackage.barAction"> <result>foo.jsp</result> </action>

Actually can simply extend a webwork predefined resulttype for some purpose and override the conditionalParse and return a final location for the action. major methods in WebWorkSupport.java

/** * Implementation of the execute method from the Result interface. This will call * the abstract method {@link #doExecute(String, ActionInvocation)} after optionally evaluating the * location as an OGNL evaluation. * * @param invocation the execution state of the action. * @throws Exception if an error occurs while executing the result. */ public void execute(ActionInvocation invocation) throws Exception { doExecute(conditionalParse(location, invocation), invocation); } protected String conditionalParse(String param, ActionInvocation invocation) { if (parse && param != null && invocation != null) { return TextParseUtil.translateVariables(param, invocation.getStack(), new TextParseUtil.ParsedValueEvaluator() { public Object evaluate(Object parsedValue) { if (encode) { if (parsedValue != null) { try { // use UTF-8 as this is the recommended encoding by W3C to // avoid incompatibilities. return URLEncoder.encode(parsedValue.toString(), "UTF-8"); }catch(UnsupportedEncodingException e) { _log.warn("error while trying to encode ["+parsedValue+"]", e); } } } return parsedValue; } }); } else { return param; } } /** * Executes the result given a final location (jsp page, action, etc) and the action invocation * (the state in which the action was executed). Subclasses must implement this class to handle * custom logic for result handling. * * @param finalLocation the location (jsp page, action, etc) to go to. * @param invocation the execution state of the action. * @throws Exception if an error occurs while executing the result. */ protected abstract void doExecute(String finalLocation, ActionInvocation invocation) throws Exception;

Force a vertical scroll bar in Firefox with CSS

2008-01-27T09:17:00.000-08:00

html {overflow-y:scroll;}

Move to a new Hotel

2008-01-15T21:05:00.001-08:00

Actually it's a kind of apartment named Boston Commons, at the south of Denver.
We moved to here last Saturday and I lived in a two rooms' apartment with a colleague.
It has a living room with a stove. And we took the light rail to the office.

Still busy these days and I didn't have much time to check the GMail and write post.
And generallyI didn't find few interesting things to blog and forgot .
That's it, just as in Hangzhou. Maybe one 'big' different is we can buy thing cheaper here, comparing with in Hangzhou.

And got a surprise from someone, saying a small gift prepared for me. Looking forward to it.

Block & Inline Elments

2008-01-13T23:07:00.000-08:00

An inline element is only as wide as the content inside it.
Inline elements don't create a line break before or after them as block-level elements do.
more infor.

BLOCK ELMENTS:

DIV : Your general-purpose box
H1 ... h6 : All headings
P : Paragraph
UL, OL, DL : Lists (unordered, ordered and definition)
LI, DT, DD : List items, definition list terms, and definition list definitions
TABLE : Tables
BLOCKQUOTE : Like an indented paragraph, meant for quoting passages of text
PRE : Indicates a block of preformatted code
FORM : An input form

INLINE ELMENTS:

SPAN : Your all-purpose inline element
A : Anchor, used for links (and also to mark specific targets on a page for direct linking)
STRONG : Used to make your content strong, displayed as bold in most browsers, replaces the narrower b (bold) tag
EM : Adds emphasis, but less strong than strong. Usually displayed as italic text, and replaces the old (italic) tag
IMG : Image
BR : The line-break is an odd case, as it's an inline element that forces a new line. However, as the text carries on on the next line, it's not a block-level element.
INPUT : Form input fields like and
ABBR : Indicates an abbr. (hover to see how it works)
ACRONYM : Working much like the abbreviation, but used for things like this TLA.

Which Style Wins

2008-01-13T23:05:00.000-08:00

A tag selector is worth 1 point.
A class selector is worth 10 points.
An ID selector is worth 100 points.
An inline style is worth 1000 points.

The Limits of CSS Inheritance

2008-01-13T23:00:00.000-08:00

Here are examples of times when inheritance doesn't strictly apply:

As a general rule, properties that affect the placement of elements on the page, or the margins, background colors, and borders of elements aren't inherited.
Web browsers use their own inherent styles to format various tags: headings are big and bold, links are blue, and so on. When you define a font-size for the text on a page and apply it to the <body> tag, headings still appear larger than paragraphs, and <h1> tags are still larger than <h2> tags. It's the same when you apply a font color to the <body> the links on the page still appear in good old-fashioned, Web-browser blue.
When styles conflict, the more specific style wins out. In other words, when you've specifically applied CSS properties to an elementlike specifying the font-size for an unordered listand those properties conflict with any inherited propertieslike a font-size set for the <body> tagthe browser uses the font size applied to the <ul> tag.

Happy hour

2008-01-08T23:22:00.000-08:00

It's happy hour and also thanks party since several GDC guys are gonna back to Hangzhou.
It's a bar nearby office in downtown. It looks not very modern and a litter different with those in Hangzhou. And the drinkings here, wo... I'm almost lost. Beer,Vodka and Whisky, those all I can remember. To be honestly I couldn't drink and just tasted a small bottle of wine, that I forgot its name.
A couple of things learned are skiing here is a very cool thing and a place named Boulder is a good place to go. It has beautiful scene of mountain and nice houses.

Install Ubuntu 7.10 in MS Virtual PC

2008-01-08T23:17:00.001-08:00

I have to say this guide is great.
For simulate the mice, option "i8042.noloop" play the magic.

Addtional VIM commands

2008-01-08T22:29:00.001-08:00

:set number/nonumber => show/hidden the line number
/\<the\> => search the whole word 'the'
:nohlsearch => un-highlight the search result temporaryly
:set hlsearch/nohlsearc => set highlight/not highlight the search result

x stands for dl (delete character under the cursor)
X stands for dh (delete character left of the cursor)
D stands for d$ (delete to end of the line)
C stands for c$ (change to end of the line)
s stands for cl (change one character)
S stands for cc (change a whole line)

. The "." command is one of the most simple yet powerful commands in Vim. It repeats the last change.

~ change case of the character under the cursor, and move the cursor to the next character. This is not an operator (unless 'tildeop' is set), thus you can't use it with a motion command. It does works in Visual mode and changes case for all the selected text then.

-------------------------- Start up settings for GUI Vim
" Windows size
set columns=110
set lines=40
"Max mine Windows when open
au GUIEnter * simalt ~x
" set scheme
color murphy
" set font
set guifont=courier_new:h10
" Turn off useless toolbar
set guioptions-=T
" Turn off right-hand scroll-bar
set guioptions-=r
" Turn off menu bar
set guioptions-=M

Happy New Year & Being OT

2008-01-01T21:18:00.001-08:00

This is the new year, 2008. But we are working from hotel.
I didn't have much complain of being working over time occasionally.
And we do solve something by the end of day.
But this time turn out to be a litter different since it's the new year,.
We should take a good rest, shouldn't we?

I'm thinking about when we were working today, what were those management team, architecture team and customers doing?
Probably only Chinese guys have to work at the new year day.
Can you say it's unfair. No, IMHO.
Imaging if we are customers, we pay the money, things definitely will be different.

Anyway, Happy New Year.

Pacific Ocean Marketplace

2007-12-30T19:56:00.001-08:00

终于去到了传说中的太平洋超市，有所谓的Chinese stuff. 果然是看着9眼熟，
很多东西一眼望过去就知道是啥玩意，而且很多都有中文。
确实方便不少。米，醋，酒，一应俱全。连年糕，面，泡面都有，虽然和国内有些差别。

再过几天就是这边的新年，看看会有些啥玩意，似乎不像农历新年热闹得很，
这里似乎很平静，或许是没去市区逛逛。

Quiet

2007-12-30T06:47:00.001-08:00

这个地方很安静，除了冰箱的一点点噪音和如果开着的空调。没有多余的人和动物。
昨天晚12点多睡，一觉睡到7点，真爽。这样的状态似乎已然消逝很久。
昨天和安仔聊天，说US并没有给太多的惊喜，其实就是这样。
工作有点点忙，而且有不是很顺畅；语言还得下功夫；出去购物得有车，自己又不会开；
去购物的时候很多都不认识，不认识是什么牌子，不认识是什么东西；
而通常是集体出动，就跟着走走看看，稍微了解了解。
不过后来想了想，应该是看店面能看出这个牌子的档次，比如Calvin Klein的样子就比很多店装修的要好，
所以东西卖的也贵，名气应该不小。不过听说LV还是个太高档次的属于我们无法承受的店，所以去的那两个地方都没有。

不过那帮人挑的东西大概都还是很值得买的，比起国内要便宜好些，牌子都是数得上。
一瓶Amarni 70$, 据说比国内便宜好些。香水和衣服是买的比较多的，可能正赶上还在打折的时间。
怪不得black Friday的时候要去血拼，原来几百的东西打到几十块，还不赶紧买。

Cheery Creek & Castle Rock

2007-12-29T20:30:00.001-08:00

It's weekend. So it's shopping day as some guys will go back to China soon.
We started to Cheery Creek first which has lots of cosmetics, perfume, clothing, electronic, etc..
We saw Clinique, Lascome, Channel and many brands we didn't know ever.
There's a Apple store as well and we tested i Phone. How cool it is! 8G memory, 399$ without tax.
The only disappointed thing is I can't use it in China as well as in US.

My partners bought something then we went to Castle Rock. It's a shopping place. A lot of clothing stores.
I only know several brands here. Many products are on sale and I got one item at Timberland.

Apparently I need to know more about those two place by search on internet in case I will not lost when going next time.

WalMart

2007-12-28T22:29:00.001-08:00

We rended several cars for shopping by COB.
First is the BestBuy. It's not very big but do have many productions, software, CD/DVD, computer accessorizes. And seems doesn't have much deals.
Then went to Walmart nearby. It's huge. Lots of stuff and most of them I can't identify what they are as well as what they are used for.
Since we didn't have enough time, I just asked for partners to give me suggestions what I should buy for the coming a week.

Radio in Denver

2007-12-27T22:21:00.000-08:00

I can receive more than 20 radio channels in Denver.
But my iRiver T10 could only save 20 channels.Sound bad!.
Any stuff can deal with this tough thing?
Save all channels then I can select one I like easily.

The first day

2007-12-27T19:58:00.001-08:00

It's snow day here.
We walked for about 10 Minutes to take bus to client office and learned the
environment.
Everywhere is covered by snow. The view outside is like what we saw in
some old US films.
And the bus is definitely more comfortable than that in Hangzhou as
well as it's bigger.

About half of ten o'clock, Billy brought our new arrivals to
our company office. It's
smaller than the GDC office and nothing better than GDC I think. Lots
of people are not here since now it's the holiday season and most of
are on vocation.

It took us more than 15 Min. to a market to buy something. And it's
terrible walking in the snow.
The market is not very big but it has almost all what we want. And
what can I say, all the thing was labeled in English and I'm lost most
of the time.
And the 16th ST. is the *main line* here. Many stores at this street.
Back to office around 2PM and checking the mail and going back to
hotel after 1 hour because the snow will be worse later.

One thing I got strong feeling is the English skills is a big problem
and also a big challenge if I want to live here comfortable.

Arrival in US

2007-12-26T18:58:00.001-08:00

1一个半小时的火车，1个小时机场大巴，近11点才到达浦东机场
下午1点40的飞机，经过日本上空(听说的)，近12小时达到San Francisco.
San Francisco 就在西海岸，飞机跨过海岸线后，就开始准备着陆了。
地上的汽车小的像是自行车队；看到了朔长的金门大桥，只是耳朵痛得没来得急拍照，
8:45AM进机场，取行李，又安检，两瓶老干妈，一瓶咸菜，一瓶豆腐乳都扣押扔掉，NND...
这便算是安全进入美国境内了。时间大致9:30AM.
再在机场等1个小时，转机到Denver。这趟飞机作的实在舒服，一上飞机就开始睡，
连起飞都没不知道，就在降落的时候醒来了。Local time 2:45PM the plane landed in Denver.
Denver似乎下了大雪，外面除了公路上到处是积雪，天气还是很晴朗，温度零下8度。
等了半个多小时接送的车才到，直接送往旅馆，安排房间，单人房，有电视，网络，还算不错。
拆包，旅途结束。

Opensource Cache/Caching Solutions in Java

2007-12-24T19:03:00.001-08:00

Details: http://entips.sharmavishal.com/2007/10/open-source-cachecaching-solutions-in.html

Bamboo DHT
cache4j
FreePastry
EHCache
Java Caching System (JCS)
JBoss Cache
JCache
Jofti
OceanStore
Open Terracotta
OSCache
ShiftOne
SwarmCache
WhirlyCache

Webware Top 10 website design 2007

2007-12-22T05:54:00.001-08:00

http://cssherald.com/webware-top-10-website-design-2007/

Removing duplicate whitespace using regular expression

2007-12-14T18:06:00.001-08:00

Think about how to implement this before clicking the link below...

http://www.memezilla.com/2007/12/14/removing-duplicate-whitespace-using-regular-expression-2

What's new in Groovy 1.5

2007-12-11T20:25:00.001-08:00

http://www.infoq.com/articles/groovy-1.5-new

A couple of things I found are pretty cool.

Annotation. Aha... getters and setters are gone! Actually that means we don't auto-generate ourselves in IDE. And code becomes naturally concise and readable.
Elvis operator. Compare piece of code below...

String name = "Guillaume";
String displayName = name != null ? name :  "Unknown";

String name = "Guillaume"
String displayName = name ?: "Unknown"

Hooters, Hangzhou

2007-12-08T09:59:00.001-08:00

Michael asked for a party in the hooters since he's going back to US a couple weeks later.
We really enjoyed ourselves I think, the beer, the chicken wings and of course hot girls.
Except the cost is expensive.
One guy here told that she's preparing GRE and ToFEL. In another words she's planning to study in US.
Sounds good. And it made me think that I had this plan before. But it's merely a plan in mind till now.....
And Mike also said if people can get scholarship, the cost will be much lower.
And probably international students could get scholarship.

I definitely felt I got far more thing to do in improving English skills.
Because it's not easy to express myself sometime and I could only understand a part of what they're talking about.
And the language skill is the basic thing for making foreign friends.
So, what the plan should be?

Top Ten Obscure but Useful Java Open Source Projects - Circa 2007

2007-12-04T19:03:00.001-08:00

1. SymmetricDS
2. Bedework
3. Gadget
4. Carbonado
5. Nux
6. Cleversafe
7. XXL
8. UIMA
9. Queplix
10. ZK

More information's here.

Color labels in GMail

2007-12-04T00:13:00.001-08:00

I supported it's a cool new feature!

Today I open GMail and found that a green box next to every label.
You can select a color for each label by clicking that box.

Then turn back to your inbox ...

Multiple Firefox profile in single machine

2007-12-02T06:11:00.000-08:00

Start Firefox ProfileManager from command line or windows->run
Firefox.exe --profilemanager

By using the profile manager, we can configure multiple profiles.

Then start Firefox with specific profile by adding appropriate parameter to properties of each shortcut.

"C:\Program Files\Mozilla Firefox 3 Beta 1\firefox.exe" -P FF3-Beta1

TIPS: It seems the parameter P is case sensitive.

Here is the details.

Floating number in binary format

2007-11-25T23:51:00.001-08:00

How to calculate its decimal value:

exponent(0111 1100) := 2⁷ - 4 - (2^(8-1) - 1) = -3
fraction :=1.01₂ = 1.25₁₀
here, m = 1. because the number above is normalized. follow to the link below to see the detail why m=1.

So the result is: 1.25 * (2^-3) = 0.15625

Found interesting when I was studying the IEEE-754 Standard, and of course I can not understand several concepts.

Keyborad Shortcuts Experient in Google Search

2007-11-14T20:38:00.001-08:00

It's interesting.

I like the shortcuts J/K, just like working in VIM.

more information here.

But a big problem is that I have to select one kind of experient every time even with a login session.

Is there any ways to let google remember my favoriate experimental selection?

Shortcut to System.out.println in Eclipse

2007-11-08T22:14:00.001-08:00

type: syso
now presss CTRL + SPACE BAR

margin:0px auto;

2007-10-18T00:08:00.001-07:00

This setting make a box(DIV) horizontally centered.
a example: http://bluerobot.com/web/css/center1.html

So why it can take that effect?
What's the difference with margin: 0px 100px;

Becoming a Better Programmer......

2007-10-17T07:25:00.001-07:00

Here 's the interview with the Java Champion Heinz Kabutz by sun.

In his closing thoughts, that guy gave some suggestions for how to be a good programmer.
And I found that the continuous learning again is a very important thing.
As Kabutz mentioned, keep learning and experiment in technical, we have to sacrifice our personal time.
It push me thinking that recently I spent all my personal time in playing WOW since the expansion TBC launched in China.
And now my most interested thing had been done, the druid's epic flight form.
I have to say flight is the most wonderful thing in WOW...

So what's the next step?
Seems I always have many learning plans in hands but don't have relevant action plans!
1. learning PHP. motivation is I want to learn another language.
2. reading books. <the extreme programming explained, by Kent Beck>, <the Pragmatic Progammer, Andrew Hunt & David Thomas>
* 3. learning algorithm. but I still wonder whether learning algorithm will contribute to my working as a information system development.Definitely hope people can give some recommendations!
4. JUnit testing, EJB, WebWork, Freemarker, selenium, etc... those things are used in the project I'm working on.
Hope I will got more opportunities to experiment with JUnit, Selenium and EJB.

Kabutz: Programmers need to be careful that their brains don't turn to stone. You may specialize in one field and find that, when the technology changes, you end up on the street. Because your brain is your single biggest asset, you need to continually feed it new information and ideas.

To really learn, you need to choose the technology that you want to experiment in and take the time to study and read, which will require sacrificing your personal time. If you follow this advice, you'll grow more valuable over time and won't become a computer dinosaur.

I've taught many courses to contented programmers, ranging from Y2K consultants to COBOL programmers, who have stuck their head in the sand for so long that it's downright impossible for them to adapt to new paradigms and languages.

If you are currently a Java programmer, you owe it to yourself to experiment in other technologies. Try out Squeak,

JRuby, and other languages. Install and use a different IDE. Never stop learning. The moment you stop, you can lose the wave, and it will require a lot of paddling to catch up with it again.

Exhausted and extremely happy

2007-10-02T20:36:00.001-07:00

It's great interesting to get a comment from a foreigner on previous Chinese post.
Maybe he's interested in foreign language like Chinese, or something else.
And I have to say I'm not able to write every post in English just because of my little English skills.
I couldn't express something in my mind exactly in English and mostly English is used for reporting something and instant communication.

On the Oct. 01 and Oct. 02, first two days of our National Holiday, we enjoyed every second.
Hiking on the Longgangshan Mountain and Yandangshan Mountain, parting, KTV, sleeping, mah-jong, volleyball, badminton.
We're pretty sorry that we forgot to take along a digit camera. So we didn't take anything photos.
Maybe I will share most of the details later on.

My Sister got married

2007-09-29T21:31:00.001-07:00

28号二姐结婚了。
说起来作为弟弟的我当天是重要角色，按照家乡的习俗，小舅子当天做"大"，不光事情要忙里忙外的，特别是酒席上敬酒环节，似乎会显的格外重要。
只是我是太不经事故，亦拙于言词，所以大部分事情都父母们操办了，或者情人"代替"操办，我便显得没啥事情。
姐夫的亲戚们比较远，所以晚上得去他们那边再一次酒席，我们先开车到姐夫老家，稍坐休息，吃过汤圆，便要去酒店了。
到是从姐夫家里出来的时候感觉怪怪的，原来嫁人确实不是那么的容易，这么多年和父母生活，突然现在把她放到了"别人"家里。。。

老妈的话语里是在说二姐有些"强势"，有时候说话乱讲，和她相处起来心理还是有疙瘩，这到也罢，只是会让姐夫在家里显得拘束。
这到真是个不好的事情，二姐的脾气大概向来如此，不知道这以后会不会有所改变。
但只要他们同心同德，事情肯定是越来越好的。 Best wishes for your guys！

二姐的事情基本上算是完成了，下面就会轮到我了，然后便说起相亲来。我对这事并不排斥，反倒觉得还是不错的认识人的方式。
但说归说，想归想，真的遇上自己，却又觉得很是别扭，目的性似乎过于明确。还真难迈出这步。。。

Boltech no more Boldtech

2007-09-20T19:44:00.001-07:00

Ron announced a very important news this morning that Boldtech Systems has been acquired by Perficient, Inc. And GDC China became a part of the Perficient as well. According Ron's words, we won't get much change in short term in China but not including time&expense system and email system. More official information might come along next. A surprise definitely. Good news or bad news? who knows.

Detail news here.

Several VIM commands learned today

2007-09-05T04:30:00.000-07:00

Substitute words
:s/From/To/g
:%s/From/To/g
/g means substitute all happens in the line.
%s means means affect all lines in the file.

Split window
:split
:split file-name ->open a second window and starts editing the file
:vsplit -> vertical splits
CTRL-W w -> jump between windows
vim -o one.txt two.txt three.txt -> open a window for each file

CTRL-V : block visual mode
SHIFT-V : select a line
Y : copy a line
y : copy selected
P : insert parse
p : appending parse

Tab pages
:tabedit file-name
gt, gT -> navigate between tabs

w, e, b W, E, B ^, $

Move to a single character. A litter different between 'f' and 't'.
fx, Fx, 3fx ('f' means 'find')
tx, Tx, 3tx ('t' means 'to')

Match a parenthesis
%

Move line
g, G, gg, H, M, L

Simple search
/pattern
n,N -> navigate between search results
:set hlsearch -> highlight search results

Script Cross-tab in BIRT 2.2

2007-09-04T04:39:00.000-07:00

I failed to find out how to add column name for a 'dimension' in cross-tab item of BIRT 2.2, so I have to use scripts to create a cross-table. The idea here is creating table columns before the create table event。
(You may notice that the top-left part of the cross-tab in BIRT 2.2 is blank and could not add any other report items into it. It's confused!??)

importPackage(Packages.org.eclipse.birt.report.model.api);

// invode a java object to get all 'usTitles' datas from Database.
usTitleService = new Packages.com.boldtech.seed.util.ReportUsTitleUtil;
usTitles = usTitleService.getUsTitles();

reportDesignHandle = reportContext.getReportRunnable().designHandle.getDesignHandle();
reportEngine = reportContext.getReportRunnable().reportEngine;
elementFactory = reportDesignHandle.getElementFactory();

// a table in the report body
employeeTable = reportDesignHandle.getBody().getContents().get(0);
header = employeeTable.getHeader().get(0);
detail = employeeTable.getDetail().get(0);
footer = employeeTable.getFooter().get(0);
group = employeeTable.getGroups().get(0);
groupFooter = group.getFooter().get(0);
computedSet = employeeTable.getColumnBindings();

usTitleSize = usTitles.size();
var startAddColumn = 2;
for(var i=0; i < usTitleSize; i++){
  //--- column title
  var addedColumn = startAddColumn + i;
  employeeTable.insertColumn(addedColumn,1);     
  cell = header.getCells().get(addedColumn);
  cell.getWidth().setValue("10%");
  label = elementFactory.newLabel(null);
  cell.getContent().add(label);
  label.setText(usTitles.get(i).getSysConfigName()); 

  //--- column value
  // "employeeTitleResult" was created to keep metric values in the 'onFetch' event of table
  cs1 = StructureFactory.createComputedColumn();
  cs1.setName("Column_TitleCount_" + i); 
  cs1.setExpression("employeeTitleResult[row.__rownum][" + i + "].value");
  cs1.setDataType("any"); 
  computedSet.addItem( cs1 );

  cell = detail.getCells().get(addedColumn); 
  data = elementFactory.newDataItem(null); 
  data.setResultSetColumn("Column_TitleCount_" + i);
  data.setName("ColumnValue_" + i);
  data.setStyleName("cell-text-center-align"); 
  cell.getContent().add(data);
   
  //--- summary at group footer cell
  cs1 = StructureFactory.createComputedColumn();
  cs1.setName("Group_TitleCount_" + i);
  cs1.setAggregateFunction("SUM");
  cs1.setExpression("row[\"Column_TitleCount_" + i + "\"]");
  cs1.setFilterExpression("row[\"Column_TitleCount_" + i + "\"]>=1");
  cs1.setDataType("any");
  cs1.setAggregateOn("ProjectGroup");
  computedSet.addItem( cs1 );

  cell = groupFooter.getCells().get(addedColumn); 
  data = elementFactory.newDataItem( null ); 
  data.setResultSetColumn("Group_TitleCount_"+i);
  data.setName("GroupValue_" + i);
  data.setStyleName("cell-text-center-align");
  cell.getContent().add(data);
  // group summary rule: do not display '0' value.
  cs1 = StructureFactory.createMapRule();
  cs1.setTestExpression("row[\"Group_TitleCount_" + i + "\"]");
  cs1.setOperator("le");
  cs1.setValue1("0");
  data.getPropertyHandle("mapRules").addItem(cs1);

  //--- summary at footer cell
  cs1 = StructureFactory.createComputedColumn();
  cs1.setName("Grand_TitleCount_" + i);
  cs1.setAggregateFunction("SUM");
  cs1.setExpression("row[\"Group_TitleCount_" + i + "\"]");
  cs1.setFilterExpression("row[\"Group_TitleCount_" + i + "\"]>=1");
  cs1.setDataType("any");
  computedSet.addItem( cs1 );

  cell = footer.getCells().get(addedColumn); 
  data = elementFactory.newDataItem( null ); 
  data.setResultSetColumn("Grand_TitleCount_" + i);
  data.setName("GrandValue_" + i);
  data.setStyleName("cell-text-center-align");
  cell.getContent().add(data);

  // footer summary rule: do not display '0' value.
  cs1 = StructureFactory.createMapRule();
  cs1.setTestExpression("row[\"Grand_TitleCount_" + i + "\"]");
  cs1.setOperator("le");
  cs1.setValue1("0");
  data.getPropertyHandle("mapRules").addItem(cs1);
}