Using C++ Technical Report 1 (TR1) in VC++ 2010 [closed]

开发者_高级运维 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 12 years ago.

How do I use a C++ TR1 library in visual c++ 2010?

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VS2010 comes with a few C++0x features built-in. Some features of TR1, such as the mathematical functions, are not included in the Visual C++ implementation of TR1.

boost has an implementation of TR1, you can get it by downloading boost.

To disable the C++0x/TR1 headers from VS2010 and use the boost implementation, define _HAS_CPP0X=0 in the project settings for your VS2010 project.

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If you want to use the implementation of TR1 that is packaged with VS10, it is a simple matter of simply #including the headers you need and hit the ground running. Not all of TR1 is included in the VS10 implementation of TR1. You can find a list of which parts of TR1 (and C++0x as a whole) are included in the factory-supplied implementation here, and here is a simplistic example of how to use regexes in VS10 as taken from an MSDN sample page:

// std_tr1__regex__regex_search.cpp 
// compile with: /EHsc 
#include <regex> 
#include <iostream> 

int main() 
    { 
    const char *first = "abcd"; 
    const char *last = first + strlen(first); 
    std::cmatch mr; 
    std::regex rx("abc"); 
    std::regex_constants::match_flag_type fl = 
        std::regex_constants::match_default; 

    std::cout << "search(f, f+1, \"abc\") == " << std::boolalpha 
        << regex_search(first, first + 1, rx, fl) << std::endl; 

    std::cout << "search(f, l, \"abc\") == " << std::boolalpha 
        << regex_search(first, last, mr, rx) << std::endl; 
    std::cout << "  matched: \"" << mr.str() << "\"" << std::endl; 

    std::cout << "search(\"a\", \"abc\") == " << std::boolalpha 
        << regex_search("a", rx) << std::endl; 

    std::cout << "search(\"xabcd\", \"abc\") == " << std::boolalpha 
        << regex_search("xabcd", mr, rx) << std::endl; 
    std::cout << "  matched: \"" << mr.str() << "\"" << std::endl; 

    std::cout << "search(string, \"abc\") == " << std::boolalpha 
        << regex_search(std::string("a"), rx) << std::endl; 

    std::string str("abcabc"); 
    std::match_results<std::string::const_iterator> mr2; 
    std::cout << "search(string, \"abc\") == " << std::boolalpha 
        << regex_search(str, mr2, rx) << std::endl; 
    std::cout << "  matched: \"" << mr2.str() << "\"" << std::endl; 

    return (0); 
    } 

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Unlike GCC, the TR1 headers in VC2010 are not sequestered in a TR1/ directory. I know this not from using VC but because someone told me that GCC's implementation is unusual in this fashion.

N1836 1.3/4:

It is recommended either that additional declarations in standard headers be protected with a macro that is not defined by default, or else that all extended headers, including both new headers and parallel versions of standard headers with nonstandard declarations, be placed in a separate directory that is not part of the default search path.

So, you might also need add a #define. It is unfortunate that they didn't standardize this!