xiekw2010

function object2QueryString(obj) {
  let queryString = ''
  if (Object.keys(obj).length) {
    queryString = Object
      .keys(obj)
      .map(k => k + '=' + obj[k])
      .reduce((a, b) => a + '&' + b, '')
  }
  
  return queryString.slice(1)

xiekw2010

'use strict'

const _ = require('lodash')

const LOGGER_PREFIX = '[CHUNK_TASK_MANAGER]***'

function sleep(s) {
  return new Promise(resolve => setTimeout(resolve, s * 1000))
}

xiekw2010

/**
 * 
 * @param fn
 * @returns {Promise}
 * eg: thunkToPromise(fs.readdir, path).then()
 */
function thunkToPromise(fn) {
  var ctx = this
  var args = Array.prototype.slice.call(arguments, 1)

xiekw2010

---
Language:        Cpp
# BasedOnStyle:  WebKit
AccessModifierOffset: -4
AlignAfterOpenBracket: false
AlignEscapedNewlinesLeft: false
AlignOperands:   false
AlignTrailingComments: false
AlignConsecutiveAssignments: false
AllowAllParametersOfDeclarationOnNextLine: true

xiekw2010

BasedOnStyle: Google
# @public等访问修饰符相对IndentWidth的偏移，@public缩进2个空格(4 + (-2))
AccessModifierOffset: -2
# 赋值语句等号对齐
AlignConsecutiveAssignments: false
# 缩进改为4个空格
IndentWidth: 4
ObjCBlockIndentWidth: 4
# 每行最多100个字符
ColumnLimit: 0

xiekw2010

##关键名词 
* 工作区(Working area)：就是咱们刚才创建的mygit文件夹。
* 暂存区(Staging area)：对文件操作(也就是需要提交的文件修改)的地方就叫暂存区。--注意：这里的修改包括对文件的增删改。
* 版本库(Repository)：就是你所看到的的那个隐藏的“.git”目录，它就是咱们的版本(仓)库。

##常用命令
1. git config --global user.name "your name"     配置用户名
2. git config --global user.email "email@example.com" 配置用户邮箱
3. mkdir mygit && cd mygit && git init 初始化空的git仓库
4. git status && git add && git commit 增加文件到暂存区

xiekw2010

正则入门:http://deerchao.net/tutorials/regex/regex.htm
正则验证:http://tool.oschina.net/regex?optionGlobl=global#

=======================
常规
=======================

+ 验证邮箱

^\w+(\.\w+)*@[a-zA-Z0-9-]{2,}\.[a-zA-Z]{2,}

xiekw2010

2014-08-26 15:26:35.488 iStat[4777:578395] Font FamilyNames
2014-08-26 15:26:35.488 iStat[4777:578395] Font Family:  Marion
2014-08-26 15:26:35.488 iStat[4777:578395]               Marion-Italic
2014-08-26 15:26:35.488 iStat[4777:578395]               Marion-Bold
2014-08-26 15:26:35.488 iStat[4777:578395]               Marion-Regular
2014-08-26 15:26:35.489 iStat[4777:578395] Font Family:  Copperplate
2014-08-26 15:26:35.489 iStat[4777:578395]               Copperplate-Light
2014-08-26 15:26:35.489 iStat[4777:578395]               Copperplate
2014-08-26 15:26:35.489 iStat[4777:578395]               Copperplate-Bold
2014-08-26 15:26:35.489 iStat[4777:578395] Font Family:  Heiti SC

xiekw2010

//worst
NSArray *sessionsFromServer = ...;
NSManagedObjectContext *context = ...;

for (WWDCSession *aSession in sessionsFromServer) {
    NSFetchRequest *req = [NSFetchRequest fetchRequestWithEntityName:@"WWDCSession"];
    req.predicate = [NSPredicate predicateWithFormat:@"sessionID == %@", aSession.sessionID];
    NSArray *results = [context executeFetchRequest:req error:nil];

    WWDCSession *existSesion = [results firstObject];