wangzaixiang’s gists

wangzaixiang / Client.java

Created December 19, 2013 09:05

JMX Demo

	package jmxdemo;

	import java.io.File;
	import java.util.Set;

	import javax.management.JMX;
	import javax.management.MBeanServerConnection;
	import javax.management.ObjectInstance;
	import javax.management.ObjectName;
	import javax.management.remote.JMXConnector;

wangzaixiang / CodeWriter.scala

Created November 19, 2013 11:04

new Template based on Scala XML

	package demo

	object CodeWriter {

	def main(args: Array[String]) {

	val code = new CodeWriter
	code.println("package wangzx.javabean")
	code.println
	code.println("public class Student extends Object");

wangzaixiang / pie.html

Last active December 18, 2015 02:29

JavaScript Performance Test

	<script languange="javascript">
	var begin = new Date();
	var pie = 0;

	var loop = 1000 * 1000 * 100;

	for(var i=1; i<loop; i++){
	var sign = (i % 2) == 0 ? -1.0 : 1.0;
	pie = pie + sign / (2*i - 1)
	}

wangzaixiang / BindDemo.scala

Last active December 17, 2015 09:48

BindMacro, implements feature such as javafx' expression bind

	package demo

	import reflect_demo.BindMacro._
	import reflect_demo._

	object BindDemo {

	def main(args: Array[String]) {

	val x = Box(10)

wangzaixiang / EnumsMacro.scala

Created March 31, 2013 14:30

Macro code to build a enum Just a simple prototype, but maybe useful for future. Learn how to build the AST, I first using the reify and the c.universe.showRaw, and using the scalac -Xprint:4 to show how the compiler generate the reifly code. It is nesseary to learn the reflect API in more deep.

	package wangzx.macros

	import scala.language.experimental.macros
	import scala.reflect.macros.Context
	import java.lang.String
	import scala.reflect.api.Symbols

	object EnumsMacro {

	def docs[A](obj: A): Map[Int, String] = macro docsMacro[A]

wangzaixiang / test2.c

Created February 18, 2013 09:50

Cache Test

	//gcc -DPAD=0 -o test2_0 test2.c -lpthread;time ./test2_0 -- 6.5s
	//gcc -DPAD=0x0C38 -o test2_0C38 test2.c -lpthread;time ./test2_0C38 -- 15s

	#include <stdio.h>
	#include <pthread.h>
	#include <sys/time.h>

	// very suprise, when PAD = 0x0C38, the speed is slow down
	typedef struct _Block
	{

wangzaixiang / BeanMacros.scala

Created January 19, 2013 09:27

Scala Macros Usage

	package macro_basic

	import scala.reflect.macros.Context
	import scala.language.experimental.macros
	object BeanMacros {

	def ToString[A](obj: A): String = macro toStringMacro[A]

	def toStringMacro[A](c: Context)(obj: c.Expr[A]): c.Expr[String] = {
	import c.universe._

wangzaixiang / channelonline_sync.py

Created November 21, 2012 08:05

ForkJoin/MapReduce Demo Code

	# -*- coding: utf-8

	'''
	从数据源同步获取Channel在线的数据，保存到mongodb中

	这个脚本一般以crontab方式运行，每30秒运行一次

	@author: [email protected]
	'''
	from app_logger import Logger, set_logging_path

wangzaixiang / Demo1.scala

Created November 16, 2012 09:19

Scala CPS learning

	package demo

	import scala.util.continuations._

	object Demo1 {

	def main(args: Array[String]) {

	var cont: (Int=>String) = null

wangzaixiang / JSONContentReader.java

Created November 9, 2012 06:59

Simple JSON-javabean mapping utility based on JAXB

	package wangzx.util.json;

	import java.io.IOException;

	import javax.xml.transform.sax.SAXSource;

	import net.sf.json.JSONArray;
	import net.sf.json.JSONObject;

	import org.xml.sax.ContentHandler;

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