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Linq扩展方法获取单个元素
在使用Linq 提供的扩展方法时,First(OrDefault), Single(OrDefault), Last(OrDefault)都具有返回单个元素的功能。MSDN对这些方法的描述只有功能说明,没有关于内部的相关实现的描述说明。首先我们来看下MSDN上关于这些扩展方法的官方描述:First:...
分类:其他好文   时间:2015-09-11 19:05:44    阅读次数:219
【转】iOS学习之NSBundle介绍和使用
bundle是一个目录,其中包含了程序会使用到的资源.这些资源包含了如图像,声音,编译好的代码,nib文件(用户也会把bundle称为plug-in).对应bundle,cocoa提供了类NSBundle.我们现在用bundle获取程序里的一张图片,并显示到View上。新建一个Single View...
分类:移动开发   时间:2015-09-11 12:19:06    阅读次数:185
leetcode [002] : Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
分类:其他好文   时间:2015-09-10 21:13:39    阅读次数:162
面向对象的原则
1. 单一职责原则(Single Responsibility Principle)2. 里氏替换原则(Liskov Substitution Principle)3. 依赖倒置原则(Dependence Inversion Principle)4. 接口隔离原则(Interface Seg...
分类:其他好文   时间:2015-09-09 21:06:33    阅读次数:187
[AngularJS + Webpack] Requiring CSS & Preprocessors
Making your CSS modular is a difficult thing to do, but using Webpack makes this so much easier. By adding a single line to your Webpack config, you c...
分类:Web程序   时间:2015-09-08 21:44:07    阅读次数:136
Sublime 3
—– BEGIN LICENSE —– Andrew Weber Single User License EA7E-855605 813A03DD 5E4AD9E6 6C0EEB94 BC99798F 942194A6 02396E98 E62C9979 4BB979FE 91424C9D A45400BF F6747D88 2FB88078 90F5CC94 1CDC92DC 8...
分类:其他好文   时间:2015-09-08 00:36:02    阅读次数:138
Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
分类:其他好文   时间:2015-09-07 21:14:43    阅读次数:226
Mysqldump --single-transaction 选项解析
一、解析查看general_log:206QuerySETSESSIONTRANSACTIONISOLATIONLEVELREPEATABLEREAD##更改隔离级别(采取快照,保证了事务中一致性读)206QuerySTARTTRANSACTION/*!40100WITHCONSISTENTSNAPSHOT*/##事务开始206QueryUNLOCKTABLES206InitDBsanguo_single206QuerySAVEPOINTsp..
分类:数据库   时间:2015-09-07 14:29:44    阅读次数:413
[LeetCode]Single Number III
Single Number IIIGiven an array of numbersnums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find t...
分类:其他好文   时间:2015-09-06 22:56:59    阅读次数:256
[LeetCode]Single Number II
Single Number IIGiven an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a lin...
分类:其他好文   时间:2015-09-06 21:22:26    阅读次数:207
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