zxh

小红帽是tp的一大利器。在ubuntu下速度慢。
先查看一下设备的属性：
udevadm test /sys/devices/platform/i8042/serio1/serio2
在最后有：
ACTION=add
DEVPATH=/devices/platform/i8042/serio1/serio2
DRIVER=psmouse
MODALIAS=serio:ty05pr00id00ex00
SERIO_EXTRA=00
SERIO_ID=00

zxh

在win下如何使用goagent，google看看。哦，对了，百度查吧，用google搜索会断开链接！

在ubuntu下，使用goagent，下面的过程不是在win下都需要的。当然也需要google的appid。
首先在 http://appengine.google.com 注册Google App Engine账号（Gmail账号通用）。
然后创建Google App Engine的ID，顺利登录后，点击Creat an Application。
Ubuntu需要下载并安装goagent和Google AppEngine SDK。
goagent下载地址：http://code.google.com/p/goagent/
Google AppEngine SDK下载地址：https://code.google.com/intl/zh-CN/appengine/downloads.html
下载Google AppEngine SDK for Python版本（linux）。
然后，goagent解压goagent到google_appengine目录下。

zxh

I answered it on stackoverflow.com:
http://stackoverflow.com/questions/2213340/what-is-daemon-thread-in-java/18428894#18428894

Java has a special kind of thread called daemon thread.

Very low priority.
Only executes when no other thread of the same program is running.
JVM ends the program finishing these threads, when daemon threads are the only threads running in a program.
What does daemon thread used for?

zxh

词的分类

• 实词：名词、动词、形容词、状态词、区别词、数词、量词、代词
• 虚词：副词、介词、连词、助词、拟声词、叹词。

ICTPOS3.0词性标记集

n 名词

nr 人名

zxh

Scala pattern matching 太强大了，但是想匹配一个 list 的最后一个元素，有些蛋疼。 本来想尝试 case (List(_* ,last)) => ... 但是居然编译都报错，原来 _* 只能扔到最后去。 如果用

(1 to 9).toList match {
  case _ :: 9 :: Nil=> "no way"
}

zxh

func getIp() (net.IP, error) {
	interfaces, e := net.Interfaces()
	if e != nil {
		return nil, errors.New("get Interfaces error")
	}
	for _, i := range interfaces {
		// the flags value maybe 'pointtopoint', it also has a ip, filter it.
		if !strings.Contains(i.Flags.String(), "broadcast") {
			continue
		}

zxh

// Camelcase to underscore style.
func ToUnderScore(name string) string {
	l := len(name)
	ss := strings.Split(name, "")

	// we just care about the key of idx map,
	// the value of map is meaningless
	idx := make(map[int]int, 1)

	var rs []rune

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package main

import (
	"fmt"
	"net/url"
)

func main() {
	fmt.Println("Path参数中对空格的转义："+url.PathEscape("hello world"))
	fmt.Println("Query参数中对空格的转义："+url.QueryEscape("hello world"))

zxh

on El Capitan, after installing the brew...

$ brew update
$ brew tap caskroom/cask
$ brew install Caskroom/cask/java

And Java 8 will be installed at /Library/Java/JavaVirtualMachines/jdk1.8.xxx.jdk/

export JAVA_HOME=`/usr/libexec/java_home -v 1.8`

zxh

# show all scala versions
brew search scala

# install specific version, maybe scala 2.11
brew install scala@2.11

# unlink current scala version
brew unlink scala

# link new scala version