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instantiate a class from a variable in PHP?

...nPaul Dixon 270k4545 gold badges298298 silver badges328328 bronze badges 2 ...
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Where is the WPF Numeric UpDown control?

... answered May 2 '10 at 5:32 MichaelMichael 56344 silver badges44 bronze badges ...
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C++模板-继承-具现化 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++模板-继承-具现化今天在学习effective c++中的第49个条款时,遇到一个模板继承的方法,让我打开眼界,感慨万千啊!具体的代码如下:class NewHandlerHolde 今天在学习effective c++中的第49个条款时,遇到一个模板继承的方法,让我...
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C++ 取得系统当前时间 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++ 取得系统当前时间方法一,只能精确到秒#include <time.h> time_t tt = time(NULL); 这句返回的只是一个时间戳 tm* t= localtime(&tt); printf("%d...方法一,只能精确到秒 #include <time.h> time_t tt = time(NULL);//这句返回的只是一个时间戳 tm* t= l...
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ifstream 线程安全读文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

ifstream 线程安全读文件函数 safeGetline:std::istream& safeGetline(std::istream& is, std::string& t){ t clear(); 使用std::streambuf 函数 safeGetline: std::istream& safeGetline(std::istream& is, std::string& t) { t.clear(); //这比使用std::istream逐个读...
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C#中数组、ArrayList和List三者的区别 - 更多技术 - 清泛网 - 专注C/C++及内核技术

C#中数组、ArrayList和List三者的区别在C#中数组,ArrayList,List都能够存储一组对象,那么这三者到底有什么样的区别呢。数组 数组在C#中最早出现的。在内存中是连续存储的,...在C#中数组,ArrayList,List都能够存储一组对象,那么...
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Linq 多字段排序,二次排序 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...q 多字段排序,二次排序Linq:ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );类似SQL:select * from t1 order by f1 d...Linq:ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 ); 类似SQL:select * from t1 order by f1 desc ,f2 asc 这种写法...
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How do I add a linker or compile flag in a CMake file?

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Running python script inside ipython

... 132 from within the directory of "my_script.py" you can simply do: %run ./my_script.py ...
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window.close and self.close do not close the window in Chrome

...ec for window.close(): The close() method on Window objects should, if all the following conditions are met, close the browsing context A: The corresponding browsing context A is script-closable. The browsing context of the incumbent script is familiar with the browsing context A. Th...