大约有 2,200 项符合查询结果(耗时:0.0131秒) [XML]

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Why do Chrome and IE put “Mozilla 5.0” in the User-Agent they send to the server? [duplicate]

...compatible” and began to impersonate Netscape, and called itself Mozilla/1.22 (compatible; MSIE 2.0; Windows 95), and Internet Explorer received frames, and all of Microsoft was happy, but webmasters were confused. share ...
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Change from SQLite to PostgreSQL in a fresh Rails project

...rked for me. It uses the taps gem, created by Heroku and mentioned in Ryan Bates's Railscast #342. There are a few steps but it worked perfectly (even dates were correctly migrated), and it was far easier than the Oracle -> DB2 or SQL Server -> Oracle migrations I have done in the past. Note...
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App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度

...)健身宝(扩展)(请右键选择链接另存为)【参三】我的车在哪儿  1、位置传感器 App Inventor为访问GPS信息提供了位置传感器组件,该组件具有纬度、经度及海拔高度三个属性。 两种情况可以触发位置信息改变事件:传...
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Returning http status code from Web Api controller

...answered Apr 1 '15 at 10:57 Jon BatesJon Bates 2,60911 gold badge2525 silver badges3737 bronze badges ...
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你真的了解熊市有多么可怕吗? - 创意 - 清泛网 - 专注C/C++及内核技术

...们都说,瞧,那是大户的,有钱人,90万才能上大户室。我的股票从10万到1万。 就拿最近的一次来说把:2000年到2005年,这期间,证券公司倒闭了一半!股市日成交金额很多天低于40亿,云南铜业最低不到4块钱,那个时候,谁在...
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世界那么大 你的钱够去看一圈吗? - 杂谈 - 清泛网 - 专注C/C++及内核技术

世界那么大 你的钱够去看一圈吗?  你知道世界上最拥挤的小岛圣克鲁斯岛在哪里吗?你能想象在面积只有0.012平方公里的岛上有着1200人口、90间房屋是什么样的概念吗?这样... 你知道世界上最拥挤的小岛圣克鲁斯岛在...
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Extract numbers from a string

... preg_replace('/[^0-9.]/','','abc1.22'); // returns decimal 1.22 – zzapper Aug 25 '15 at 16:09  |  ...
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Linking R and Julia?

...ute the really basic flexible general data structure in R. Note that Doug Bates alerted me about RCall a bi-directional interface from Julia to R (i.e., the other direction than R to Julia). Also, Doug recommended to target julia 0.4.0 rather than the current stable versions of julia. ...
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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...对于同一个数据,需要记录两个事:1)谁更新的我,2)我的本号是什么。 下面,我们来看一个操作序列: 1)一个写请求,第一次被节点A处理了。节点A会增加一个本信息(A,1)。我们把这个时候的数据记做D1(A,1)。 然后...
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盘点微软历史上9大失败软件产品! - 创意 - 清泛网 - 专注C/C++及内核技术

...种设备提供无缝连接的一组软件产品或服务。但不久,全世界都发觉这个定义操作起来太不现实。微软自己也一度承认其对 .NET 的定义和使用给用户带来了困惑,后来“.NET”就不在 Windows 2003 Server 和其它一些服务器产品中使用...