在工作中我们经常会遇到有关LINQ 的一些问题。这时我们就用到lambda 表达式。下面是我在工作遇到的。 First and FirstOrDefault 这两方法。我今天把它记录一下。需要注意的是我标注红色的部分,这是它们俩的区别。First and FirstOrDefault 1 #regi...
描述In your job at Albatross Circus Management (yes, it's run by a bunch of clowns), you have just finished writing a program whose output is a list of ...
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编程语言 时间:
2014-11-15 18:19:17
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228
Inmy previous post, I have already defined how you can inherit from an existing control and define your own reusable chunk. The reusable XAML code tha...
来自国外博客的一篇文章介绍了MySQL 的 read_buffer_size 参数是如何影响写缓冲和写性能。据说 read_buffer_size 参数只影响以下两种情况的写数据的性能:SELECT INTO … OUTFILE ‘fileName‘When writing to the OUTFI...
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数据库 时间:
2014-11-11 21:05:02
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292
描述
In your job at Albatross Circus Management (yes, it's run by a bunch of clowns), you have just finished writing a program whose output is a list of names in nondescending order by length (so that ...
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其他好文 时间:
2014-11-11 19:19:41
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210
对称排序
时间限制:1000 ms | 内存限制:65535 KB
难度:1
描述
In your job at Albatross Circus Management (yes, it's run by a bunch of clowns), you have just finished writing a program whose output is a li...
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编程语言 时间:
2014-11-06 22:05:13
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224
Provider 模式的好处去除实现依赖。常见场景:DBPrider切换,第3方集成API切换以发邮件为例:Email Provider Config: public abstract class EmailProvider : ProviderBase { #regi...
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其他好文 时间:
2014-11-06 19:58:38
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191
Learning Puppet — Resources and the RALWelcome to Learning Puppet! This series covers the basics of writing Puppet codeBeginLog into the Learning Pupp...
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其他好文 时间:
2014-11-06 16:41:41
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156
Seam CarvingDescriptionFish likes to take photo with his friends. Several days ago, he found that some pictures of him were damaged. The trouble is th...
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其他好文 时间:
2014-11-05 19:26:39
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255
题目1684: [Usaco2005 Oct]Close EncounterTime Limit:5 SecMemory Limit:64 MBDescriptionLacking even a fifth grade education, the cows are having trouble w...
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其他好文 时间:
2014-11-04 19:15:59
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272