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When to use an assertion and when to use an exception
...ts in all sorts of assumptions you make about code that's internal. It's a bit of a loose definition but I guess it's up to each developer to draw the line.
Regarding the use of Exceptions, as the name says, their usage should be exceptional so for the code you present above, the getGroup call shou...
Downloading a picture via urllib and python
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answered Jun 15 '10 at 5:42
Matthew FlaschenMatthew Flaschen
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jQuery or CSS selector to select all IDs that start with some string [duplicate]
How can I select all elements whose id starts with "player_"?
4 Answers
4
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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...
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()
{
...
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
_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...
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...
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...
01_Real Application Clusters Overview - 文档下载 - 清泛网移动版 - 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...