C++ TR1 和 C++0x
C++ Technical Report 1 （TR1）是ISO/IEC TR 19768, C++ Library Extensions（函式库扩充）的一般名称。TR1是一份文件，内容提出了对C++标准函式库的追加项目。这些追加项目包括了正则表达式、智能指针、哈希表、随机数生成器等。TR1自己并非标准，他是一份草稿文件。然而他所提出的项目很有可能成为下次的官方标准。这份文件的目标在于「为扩充的C++标准函式库建立更为广泛的现成实作品」。
C++ tr1是针对C++标准库的第一次扩展。即将到来的下一个版本的C++标准c++0x会包括它，以及一些语言本身的扩充。tr1包括大家期待已久的smart pointer,正则表达式以及其他一些支持范型编程的东东。草案阶段，新增的类和模板的名字空间是std::tr1.
C++ Technical Report 1 （TR1） is the common name for ISO/IEC TR 19768, C++ Library Extensions, which is a document proposing additions to the C++ standard library. The additions include regular expressions, smart pointers, hash tables, and random number generators. TR1 is not a standard itself, but rather a draft document. However, most of its proposals are likely to become part of the next official standard. In the meantime, vendors can use this document as a guide to create extensions. The report's goal is “to build more widespread existing practice for an expanded C++ standard library.”
C++0x （pronounced see plus plus oh ex）[1] is the unofficial name of the planned new standard for the C++ programming language. It is intended to replace the existing C++ standard, ISO/IEC 14882, which was published in 1998 and updated in 2003. These predecessors are informally known as C++98 and C++03. The new standard will include several additions to the core language and will extend the C++ standard library, incorporating most of the C++ Technical Report 1 （TR1） libraries - most likely with the exception of the library of mathematical special functions.
using std::tr1::function
2010年10月14日 6:35
Silver_Gates
This is a simple example of using std::tr1::function. Thq question is at the end of the code
#include “stdafx.h”
#include <iostream>
#include <vector>
#include <functional>
//using std::tr1::function;
typedef std::tr1::function< long （int,int） >Callback;
typedef std::vector<Callback> Callbacks;
Callbacks callbacks;
long myfunction（int a,int b）
{
std::cout 《 “Function Called \n”;
return 12;
}
int _tmain（int argc, _TCHAR* argv[]）
{
//Now callbacks is a vector lets resize it
callbacks.resize（1）；
//Now store address of myfunction in callback
callbacks[0]= &myfunction;
//Now call the function using the cector and passing 5 as parameter
Callback& callback = callbacks[0];
std::cout 《 callback（12,14）；
std::cin.get（）；
return 0;
}
However i have two questions:
1）in which scenario would we get something like
typedef std::function< void （ME*, typename traits< t >::ContentType ） > Callback;
what does Me mean and what could the function be like?/
2）in which scenario would we use it like this
callback（ this, content ）； //?? what is content ???
any ideas would be great !!!
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