C ++ 11正则表达式分组 [英] C++11 Regex Grouping

问题描述

可能重复：

与c ++ 11正则表达式无匹配

阅读这本涵盖C ++ 11的书，我到了有关正则表达式的章节。一切都对我很好，直到我得到关于分组的部分，并指向\1每当我需要回到一个组。我的代码编译完全正常：

  #include< iostream& 
 #include< regex> 
 #include< string> 
 int main（）
 {
 try 
 {
 
 
 regex r1（<（。*）>。* ; / \\1>）; 
 bool found = regex_match（string（< tag> value< / tag>），r1）; 
 cout<< 字符串是否匹配：; 
 cout<< boolalpha<发现< '\\\
'; 
} catch（exception e）
 {
 cout<< e.what（）< '\\\
'; 
} 
 
 return 0;然而，会发生什么是我得到一个分段故障（核心转储）消息。这个小片段直接从书中使用，所以我很怀疑这是错的。 
注意：我使用-std = c ++ 0x编译。 
注意：我在Ubuntu 12.04下使用Code :: Blocks 
 
 
 
任何帮助都非常感谢！ 
谢谢！
解决方案
 libstdc ++的regex的实现是HILARIOUSLY不完整。
 
 
 
  http://gcc.gnu.org /onlinedocs/libstdc++/manual/status.html#status.iso.2011  
 
 
 
向下转到第28节的正则表达式。 
 
 
 
这是一个耻辱，因为g ++的工具链为C + +11否则非常坚固。
 
 
 
您可能需要使用boost或另一个regex库。或者改变clang（和clang的库）或MSVC（及其库）。
 

  
Possible Duplicate:

  No matches with c++11 regex  
I was reading this book that covers C++11 and I got to the chapter that talks about  Regular Expressions. Everything was working fine for me until I got the part about grouping and referring to \1 whenever I needed to refer back to a group. My code compiles perfectly fine : 
#include <iostream>
#include <regex>
#include <string>
int main()
{
     try
     {


           regex r1("<(.*)>.*</\\1>");
           bool found = regex_match(string("<tag>value</tag>"),r1);
           cout << "Does the string match:        ";
           cout << boolalpha << found << '\n';
     }catch( exception e)
     {
        cout << e.what() << '\n';
     }

     return 0;
}
What happens however is I get a segmentation fault (core dumped) message. This little snippet was used directly from the book so I highly doubt this is wrong.
Note:  I do compile using -std=c++0x.
Note:  I'm using Code::Blocks under Ubuntu 12.04

Any help would be highly appreciated!
Thanks!
解决方案
libstdc++'s implementation of regex is HILARIOUSLY incomplete.

http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2011

Head down to section 28, regular expressions. If you're using libstdc++ (which is almost certain as you're on ubuntu) then you cannot use regex yet.

It's a shame, because g++'s toolchain for C++11 is otherwise extremely solid.

You'll need to use boost for this probably, or another regex library.  Or change over the clang (and clang's libraries) or to MSVC (and their libraries).

                        
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