How to tokenize strings using std::regex library in Visual Studio 2010?

I could not find the reference of std::regex library. I did some google searches and found some tutorials, but they're all brief and short. I couldn't figure out how to tokenize a string using regex.

Could anyone give me a hint how to start?

A video tutorial on STL regular expressions.

c++, I think an example from boost :: regex might solve my problem;) /* * * Copyright (c​) 12003 * John Maddock * * Use, modification and distribution are subject to the  2 How to tokenize strings using std::regex library in Visual Studio 2010? Jan 25 '11 2 After building wxWidgets with VS2012, which files can I delete in the lib folder?

#include <regex>
#include <iostream>
#include <string>


void ifIWantASpecificMatch ()
{
   const std::string input = "Hello World";
   const std::regex regex("(.*) (.*)");

   std::smatch match; // std::match_result ready templated for std::string

   if (std::regex_match(input, match, regex)) {
      std::cout << "full match " << match[0] << std::endl;
      std::cout << "first group " << match[1] << 
      " beginning at: " << match[1].first - input.begin() << std::endl;
      std::cout << "second group " << match[2] << 
         " beginning at: " << match[2].first - input.begin() << std::endl;
   }
}


void ifIWantToIterateAllMatches ()
{
   const std::string input = "I want to get all the o's";
   const std::regex regex("o");

   std::smatch match;

   for (std::sregex_iterator it(input.begin(), input.end(), regex), end; it != end; ++it) {
      std::cout << "Found at: " << it->position() << std::endl;
   }
}

🤽 How to tokenize strings using std :: regex library in Visual Studio , split using strtk predicates { std::string str = "abc|123|xyz|789"; strtk::std_string::​token_list_type token_list; strtk::single_delimiter_predicate predicate('|');  C++11 standard has std::regex. It also included in TR1 for Visual Studio 2010. Actually TR1 is available since VS2008, it's hidden under std::tr1 namespace. So you don't need Boost.Regex for VS2008 or later. Splitting can be performed using regex_token_iterator:

I think an example from boost::regex site could solve my problem ;)

/*
 *
 * Copyright (c) 12003
 * John Maddock
 *
 * Use, modification and distribution are subject to the 
 * Boost Software License, Version 1.0. (See accompanying file 
 * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 *
 */

 /*
  *   LOCATION:    see http://www.boost.org for most recent version.
  *   FILE         regex_token_iterator_example_1.cpp
  *   VERSION      see <boost/version.hpp>
  *   DESCRIPTION: regex_token_iterator example: split a string into tokens.
  */


#include <boost/regex.hpp>

#include <iostream>
using namespace std;


#if defined(BOOST_MSVC) || (defined(__BORLANDC__) && (__BORLANDC__ == 0x550))
//
// problem with std::getline under MSVC6sp3
istream& getline(istream& is, std::string& s)
{
   s.erase();
   char c = static_cast<char>(is.get());
   while(c != '\n')
   {
      s.append(1, c);
      c = static_cast<char>(is.get());
   }
   return is;
}
#endif


int main(int argc, const char*[])
{
   string s;
   do{
      if(argc == 1)
      {
         cout << "Enter text to split (or \"quit\" to exit): ";
         getline(cin, s);
         if(s == "quit") break;
      }
      else
         s = "This is a string of tokens";

      boost::regex re("\\s+");
      boost::sregex_token_iterator i(s.begin(), s.end(), re, -1);
      boost::sregex_token_iterator j;

      unsigned count = 0;
      while(i != j)
      {
         cout << *i++ << endl;
         count++;
      }
      cout << "There were " << count << " tokens found." << endl;

   }while(argc == 1);
   return 0;
}

Boost split string, Feb 27, 2010 · Lucene is an open-source library for Information Retrieval. Powershell understands standard notation for kilobytes, megabytes, The Select​-String cmdlet searches for text Aug 20, 2015 · The regex to use to extract a that Useful PowerShell script to update a Visual Studio Project version in an msbuild . How to get string with pattern from std::regex in VC++ 2010 ; Visual Studio 2010's strange “warning LNK4042” How to add an external static library to a Visual C++ 2010 Express project ; Closure and nested lambdas in C++0x

You cannot reference std::regex in Visual Studio 2010

std::regex is provided by <regex> and is part of the C++11 standard.

Visual Studio 2010 does not support C++11 with the MSVC++ 10.0 compiler.

For full C++11 support in Visual Studio you need Visual Studio 2013 with the MSVC++ 12.0 compiler, GCC 5 compilers, or newer.

C++ String Toolkit Library (StrTk), In this chapter from C++ for the Impatient, Brian Overland explains all #include <regex> #include <string> using std::regex; using std::string;  This topic applies to Visual Studio 2012 and Visual Studio Express 2012 for Web. The topic covers features that are included in the latest Visual Studio Web Publish Update available as of June, 2013. Most of these features are also available in Visual Studio 2010 and Visual Web Developer 2010 Express when you install the Web Publish Update.

Powershell regex version number, This code has been tested under 64-bit Windows 7 with Visual Studio 2010 and decoding, we will use both the Boost Tokenizer [10] and Regex [11] libraries. We now split the sentence into pieces by tokenizing on the comma character. ( std::vector<std::string>::iterator &i) { boost::smatch m; if (boost::regex_match(*i, m,​  In order to compile the above code on a Mac OSX machine with Xcode we will use: 1 clang++ -std=c++11 -stdlib=libc++ regex_01.cpp -o regex_01.out. Running the above code: At the time of this writing gcc has no support for regex, the only compilers that can compile the above code (after my knowledge) are clang and Visual C++ 2010.

20.7. String Tokenizing | C++11 Regular-Expression Library, I'm working in windows forms and am a bit lost with reading a string. I have a text file which is read into a string: String ^ TextString = this->textBox1->Text; Now I want to read this string one number at a time. It should be filled with an undefined amount of integers. I want to select each input at a time, seperated by either a space or

Multi-Platform Serial Interfacing using Boost: A GPS Sensor and , If you are using Windows XP+, or Win 2K w/IE 5.5, you can skip C++ regular expressions and use the Visual Basic RegExp library which is on every system post WinXP.There's a few articles about using it, but I decided to write my own C/C++ version.

Comments
  • Please post your second question as a seperate question.
  • @John: edited ! Thanks for the reminder.
  • Chan, TTBOMK std::regex stems from boost::regex, which is documented at boost. If you skip over items describing installation issues etc. you have a pretty exhaustive documentation, I guess.
  • @sbi: Thanks! I misunderstood that boost:regex is different than std::regex ;)
  • I haven't followed the evolution of that library from boost to std, so there might be quite noticeable differences. I really don't know.