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How to get one value at a time from a generator function in Python?

... In Python <= 2.5, use gen.next(). This will work for all Python 2.x versions, but not Python 3.x In Python >= 2.6, use next(gen). This is a built in function, and is clearer. It will also work in Python 3. Both of these end up calling a specially named function, next(), wh...
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Check whether a request is GET or POST [duplicate]

... Better use $_SERVER['REQUEST_METHOD']: if ($_SERVER['REQUEST_METHOD'] === 'POST') { // … } share | improve this answer ...
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How to filter array in subdocument with MongoDB [duplicate]

...use $group to put it back together: db.test.aggregate([ { $match: {_id: ObjectId("512e28984815cbfcb21646a7")}}, { $unwind: '$list'}, { $match: {'list.a': {$gt: 3}}}, { $group: {_id: '$_id', list: {$push: '$list.a'}}} ]) outputs: { "result": [ { "_id": ObjectId("512...
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Get the first element of each tuple in a list in Python [duplicate]

... Use a list comprehension: res_list = [x[0] for x in rows] Below is a demonstration: >>> rows = [(1, 2), (3, 4), (5, 6)] >>> [x[0] for x in rows] [1, 3, 5] >>> Alternately, you could use unpacking instead of x[0]: res_li...
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VS Addin插件基本开发入门 - C/C++ - 清泛网 - 专注C/C++及内核技术

...lic partial class MyUserControl : UserControl { private DTE2 _applicationObject; /// <summary> /// VS的DTE2对象 /// public DTE2 ApplicationObject { set { _applicationObject = value; } } public MyUserControl() { ...
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未能从“const std::string”为“const std::_Tree &”推导 模板 参数 - C/...

未能从“const std::string”为“const std::_Tree &”推导 模板 参数参考:http: www tsingfun com html 2016 dev_0630 1876 html参考:https://www.tsingfun.com/it/cpp/1876.htmlstl 模板 参数
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_block_type_is_valid(phead- nblockuse) - C/C++ - 清泛网 - 专注C/C++及内核技术

_block_type_is_valid(phead- nblockuse)出现这种错误的原因有多个,基本原因有四个,可以参见:SO。错误如下:比较常见的错误时,把多个对象的数组当做一个对象删除了,例如:void te...出现这种错误的原因有多个,基本原因有四个, 可以参...
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MFC 日期时间控件CDateTimeCtrl自绘 - C/C++ - 清泛网 - 专注C/C++及内核技术

...效果:方法同ComboBox自绘(http: www.tsingfun.com html 2016 code_1110 100.html),采用图片拼接的方式,本例实现较基础仍有细节待...先看效果: 方法同ComboBox自绘(https://www.tsingfun.com/down/code/100.html),采用图片拼接的方式,本例实现...
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01_Real Application Clusters Overview - 文档下载 - 清泛网 - 专注IT技能提升

01_Real Application Clusters OverviewOracle-Real-Application-Clusters-Overview01_Real Application Clusters OverviewOracle集群介绍。RAC:真正应用集群Oracle集群介绍 RAC:真正应用集群 ASM管理存储,Oracle自己的文件系统 心跳ip有问题,关闭次节点只留主节...
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01_Real Application Clusters Overview - 文档下载 - 清泛网 - 专注IT技能提升

01_Real Application Clusters OverviewOracle-Real-Application-Clusters-Overview01_Real Application Clusters OverviewOracle集群介绍。RAC:真正应用集群Oracle集群介绍 RAC:真正应用集群 ASM管理存储,Oracle自己的文件系统 心跳ip有问题,关闭次节点只留主节...