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What is the use for Task.FromResult in C#
...using the async keyword.
I found this example:
public class TextResult : IHttpActionResult
{
string _value;
HttpRequestMessage _request;
public TextResult(string value, HttpRequestMessage request)
{
_value = value;
_request = request;
}
public Task<HttpRe...
Django database query: How to get object by id?
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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...e you want to know more about how ObjectIds are created, here is the spec: http://www.mongodb.org/display/DOCS/Object+IDs#ObjectIDs-BSONObjectIDSpecification
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Does use of final keyword in Java improve the performance?
...
According to IBM - it doesnt for classes or methods.
http://www.ibm.com/developerworks/java/library/j-jtp04223.html
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关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...event 扩展实现的，需要运行的话要先安装此扩展，参考：http://pecl.php.net/package/libevent。
epoll/kqueue 的例子最好是能在linux环境下运行，因为windows下的php不支持多epoll模型，也不支持多进程。
以上就是我对php的初探，3中io模型的...
Why is parenthesis in print voluntary in Python 2.7?
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How do I best silence a warning about unused variables?
...
C++17 now provides the [[maybe_unused]] attribute.
http://en.cppreference.com/w/cpp/language/attributes
Quite nice and standard.
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How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?
...);
if (!context.ExceptionHandled)
return;
var httpContext = context.HttpContext.ApplicationInstance.Context;
var signal = ErrorSignal.FromContext(httpContext);
signal.Raise(context.Exception, httpContext);
}
}
The base implementation is invoked firs...
STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...是默认的使用了less进行比较。
关于这个_Pr详解可见：http://www.cnblogs.com/zjfdlut/archive/2011/08/12/2135698.html
解决方法
好了，知道了出错原因，我们就自己重载<操作符了：
bool operator<(const a& a1, const a& a2)
{
if ( a1.m_a>=a2.m_a )
...
Catch an exception thrown by an async void method
...nchronizationContext that was active when the async void method started. - https://msdn.microsoft.com/en-us/magazine/jj991977.aspx
Note that using Wait() may cause your application to block, if .Net decides to execute your method synchronously.
This explanation http://www.interact-sw.co.uk/iangbl...