大约有 2,400 项符合查询结果（耗时：0.0079秒） [XML]
How to check that a string is an int, but not a double, etc.?
... for non-numeric strings: is_int("abc"+0) is true
– Kai Pommerenke
Jan 29 '13 at 18:07
1
True, it...
What does %~d0 mean in a Windows batch file?
...
The magic variables %n contains the arguments used to invoke the file: %0 is the path to the bat-file itself, %1 is the first argument after, %2 is the second and so on.
Since the arguments are often file paths, there is some additional syntax to extr...
How do I add an existing directory tree to a project in Visual Studio?
...r. How can you do if you just want to reference some folders and files contained in an other project on your computer ?
– hico
Aug 7 '13 at 10:16
5
...
MFC子窗口和父窗口（SetParent,SetOwner） - C/C++ - 清泛网 - 专注C/C++及内核技术
...wner窗口。需要注意的是，一旦创建了owned类型的窗口，就无法再改变其所有关系，因为WIN32没有没有提供改变窗口所有者的方法。
而且在Win32中，由于有多线程的存在，所以要注意保证父子窗口或者owner/owned 窗口要同属于一个线...
计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nt;
if (info._count > 1) {
/* NOTE: 删除时， 最大最小值无法还原 */
/*
if (v > info._max_v)
info._max_v = v;
if (v < info._min_v)
info._min_v = v;
*/
} else {
info._max_v = info._min_v = v;
}
if (info._count > 0)
info._ave = info._...
90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，常常有些新奇的点子，这些点子常常能成为爆款，但是无法持续。比如，2011年我做好友拼图，确实火了一把，但3个月后数据下滑得很厉害，然后就无人问津了。2012年我做上传两张图猜未来宝宝长啥样那个网站时，也能预测到...
What is the fastest way to check if a class has a function defined?
I'm writing an AI state space search algorithm, and I have a generic class which can be used to quickly implement a search algorithm. A subclass would define the necessary operations, and the algorithm does the rest.
...
Rename an environment with virtualenvwrapper
...
if you do:
$ ack-grep -ai doors ~/.virtualenvs/django/bin
you'll notice that will have doors as location and not django, you'll to change each file with the new location.
solution:
after renamed the folder execute the command below.
$ sed -i "...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...，这样怎么也骗不过去了。
在应用多态编程时，当我们无法确定传过来的对象的实际类型时使用dynamic_cast，如果能保证对象的实际类型，用static_cast就可以了。至于reinterpret_cast，我很喜欢，很象c语言那样的暴力转换：）
dy...
为维护国家安全 中国限制出口无人机和高性能计算机 - 资讯 - 清泛网 - 专注...
...：计算APP的值，不考虑通过“局域网”、广域网、I/O共享连接或共享设备、I/O控制器以及任何由“软件”实现通讯互连的处理器组合。
注6: 计算APP的值，必须包括通过聚合、同时运算和共享内存方式专门设计用于增强系统性能...