lichengwu

dt = {}
if "key" in dt:
    dt["key"] = 1

else:
    dt["key"] += 1
# 默认字典
dt = collections.defaultdict(int)
dt["key"] += 1

lichengwu

LightObject = namedtuple('LightObject', ['shortname', 'otherprop'])
n = LightObject(shortname='something', otherprop='something else')
n.shortname # something

lichengwu

import java.util.concurrent.TimeUnit;

import sun.dc.pr.PathDasher;

public class Crash {
	public static void main(String[] args) {
		Thread thread = new Thread(new Runnable() {

			@Override
			public void run() {

lichengwu

/*
 * Copyright (c) 2010-2011 lichengwu
 * All rights reserved.
 * 
 */
package oliver.test.sync;

import java.util.concurrent.TimeUnit;

import org.junit.Test;

lichengwu

when you declare generic type, you can get it. when you use generic type, it will be erased. eg:

public class Generics {
    public <T> T m1(T object){
        return object;
    }
    public void m2(){
        List<Integer> list = new ArrayList<Integer>();
        list.add(1);

lichengwu

#This is a basic VCL configuration file for varnish.  See the vcl(7)
#man page for details on VCL syntax and semantics.
#
#Default backend definition.  Set this to point to your content
#server.
#
backend default {
          .host = "hostname1.com";
          #.host = "meituan.com";
          #.host = "debug.ct.dev.sankuai.com";

lichengwu

-server
-Xverify:none
-Xmn512m
-Xms1024m
-Xmx1024m
-Xss1m
-XX:PermSize=256
-XX:MaxPermSize=384m
-XX:+UseG1GC
-XX:MaxGCPauseMillis=300

lichengwu

package oliver.test.conurrency;

import java.util.Date;
import java.util.concurrent.TimeUnit;

/**
 * do not use build-in lock
 * 
 * if a class use build-in lock ensure concurrence access it's field, thread
 * will be blocked by other threads who had acquired the lock.

lichengwu

/**********************************************************
mail.meituan.com
@author:lichengwu
@created:2013-01-11
@version:1.0
**********************************************************/
var name="Meituan Mail";
var ver="2013-01-11";

function init(){

lichengwu

/**
 * lazy init by placeholder(thread safe)
 *
 * @author lichengwu
 * @version 1.0
 * @created 2013-01-31 10:19 PM
 */
public class Resource {

    public static Resource getInstance() {