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Do unix timestamps change across timezones?

... earth, right? When the earth's core is back in the same location it was ~365 days ago, it has been a year. It isn't measured that way. It is measured by a specific location on the earth getting back to the same location (relative to the sun) that it was ~365 days ago. But the period of a day an...
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LR性能指标解释 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...吞吐率。 5.应用: jvm内存、日志、Full GC频率。 6.监控工具(LoadRunner[/url]):用户执行情况、场景状态、事务响应时间、TPS等。 7.测试机资源:CPU、Memory、网络、磁盘空间。 监控工具 性能测试通常采用下列工具进行监控: ...
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Xcode: What is a target and scheme in plain language?

...oject. For example, my project has two targets, a "normal" build and an "office" build that has extra testing features and may contain several background music tracks and a button to change the track (as it currently does). You'll be used to adding classes and resources to your default target as y...
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项目管理实践教程二、源代码控制【Source Control Using VisualSVN Server ...

...看了一些的文章而已,对它也不了解。 3.VisualSVN Server是免费的吗? 回答: 是的,VisualSVN Server是免费的,而VisualSVN是收费的。VisualSVN是SVN的客户端,和Visual Studio集成在一起, VisualSvn Server是SVN的服务器端,包括Subversion、Apache和...
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When should the xlsm or xlsb formats be used?

...were binary in format. .xlsb files retain this binary format for the newer office versions. There is both a size difference and a speed benefit to storing the data in binary format, though the improvements will only be noted in VERY large files. – music2myear J...
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“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...

...低价的肯定是小区门口的大字报、小广告,以及200份青菜免费送的模式更吸引大妈大爷群体,简单粗暴是主要的,什么满20减5块,扫码送的玩法通通行不通,最近瓜子二手车的魔性广告让人烦的记住了,对于大妈大爷群体,笔者...
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Error Code: 1005. Can't create table '…' (errno: 150)

...empl INT UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY(id) ); CREATE TABLE offices( id_office INT UNSIGNED NOT NULL AUTO_INCREMENT, id_empl INT UNSIGNED NOT NULL, PRIMARY KEY(id), CONSTRAINT `constraint1` FOREIGN KEY (`id_empl`) REFERENCES `employees` (`id_empl`) ON DELETE CASCADE ON UPDATE CASCADE ...
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How to create an array from a CSV file using PHP and the fgetcsv function

... [funding] => Fund Code [number] => Country Office Position Number [wnumber] => Wings Position Number [title] => Position Title [tor] => Tor Text [tor_file] => [status] => [datetim...
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The maximum recursion 100 has been exhausted before statement completion

...a sample to avoid max recursion error. we have to use option (maxrecursion 365); or option (maxrecursion 0); DECLARE @STARTDATE datetime; DECLARE @EntDt datetime; set @STARTDATE = '01/01/2009'; set @EntDt = '12/31/2009'; declare @dcnt int; ;with DateList as ( select @STARTDATE Date...
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8 种提升 ASP.NET Web API 性能的方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...高 ASP.NET Web API 性能的技术。 1) 使用最快的 JSON 序列化工具 JSON 的序列化对整个 ASP.NET Web API 的性能有着关键性的影响。 在我的一个项目里,我从 JSON.NET 序列化工具转到了 ServiceStack.Text 有一年半了。 我测量过,Web API 的性能...