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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
...后要回填数据后，却发现数据的版本号已经被人更新成了v2，那么服务器就会拒绝你。版本这个事就像“乐观锁”一样。
但是，对于分布式和NWR模型来说，版本也会有恶梦的时候——就是版本冲的问题，比如：我们设置了N=3 W=1...
How to find a min/max with Ruby
..., so anything that includes Enumerable will have those methods available.
v2.4 introduces own Array#min and Array#max, which are way faster than Enumerable's methods because they skip calling #each.
@nicholasklick mentions another option, Enumerable#minmax, but this time returning an array of [min...
重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...重构下吧——这就是重构理论中提到的三次法则。
代码V2版
这个不同分支的消息处理代码，是很适合用设计模式里的简单工厂模式的。模如其名，简单工厂模式是非常，非常，非常简单的，原理就不再赘述了。套用到这个...
Can someone explain Microsoft Unity?
...e;
}
public string Name { get; set; } = "Rectangle";
}
In DIAutoV2Controller.cs Auto Injection mechanism is used
[RoutePrefix("api/v2/DIAutoExample")]
public class DIAutoV2Controller : ApiController
{
private string ConstructorInjected;
private string MethodInjected1;
private...
Git flow release branches and tags - with or without “v” prefix
...sion. The question was about Git tags. In fact, the semver repo still uses v2.0.0 as a tag for version 2: github.com/mojombo/semver/releases/tag/v2.0.0
– friederbluemle
Oct 25 '16 at 6:20
...
How to configure Visual Studio to use Beyond Compare
...3=%8 /title4=%9
If using Beyond Compare v3/v4 Standard or Beyond Compare v2 (2-way Merge):
Extension: .*
Operation: Merge
Command: C:\Program Files\Beyond Compare 3\BComp.exe (replace with the proper path for your machine, including version number)
Arguments: %1 %2 /savetarget=%4 /title1=%6 /tit...
How to count objects in PowerShell?
...put to be an array.)
2012.01.30 Update
The above is true for PowerShell V2. One of the new features of PowerShell V3 is that you do have a Count property even for singletons, so the at-sign becomes unimportant for this scenario.
...
Install specific git commit with pip
...it
$ pip install git+git://github.com/aladagemre/django-notification.git@v2.1.0
or from source bundle
$ pip install https://github.com/aladagemre/django-notification/archive/v2.1.0.tar.gz
It is a not well-documented feature, but you can find more information at https://pip.pypa.io/en/latest/r...
Removing fields from struct or hiding them in JSON Response
...Name: "Alice",
Roles: []string{"user", "admin"},
}
v2, err := version.NewVersion("2.0.0")
if err != nil {
log.Panic(err)
}
o := &sheriff.Options{
Groups: []string{"api"},
ApiVersion: v2,
}
data, err := sheriff.Marshal(o, u...
Conditional compilation and framework targets
... constants:
<PropertyGroup Condition=" '$(TargetFrameworkVersion)' == 'v2.0' ">
<DefineConstants>NET10;NET20;$(DefineConstants)</DefineConstants>
</PropertyGroup>
<PropertyGroup Condition=" '$(TargetFrameworkVersion)' == 'v3.0' ">
<DefineConstants>NET10;NET20...