Regular expressions: Difference between revisions
C++ solution using boost library
(C++ solution using boost library) |
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Line 20:
return message
end try
==[[C plus plus|C++]]==
*Compiler: g++ 4.0.2
*Libraries: boost
#include <iostream>
#include <string>
#include <iterator>
#include <boost/regex.hpp>
int main()
{
boost::regex re(".* string$");
std::string s = "Hi, I am a string";
// match the complete string
if (boost::regex_match(s, re))
std::cout << "The string matches.\n";
else
std::cout << "Oops - not found?\n";
// match a substring
boost::regex re2(" a.*a");
boost::smatch match;
if (boost::regex_search(s, match, re2))
{
std::cout << "Matched " << match.length()
<< " characters starting at " << match.position() << ".\n";
std::cout << "Matched character sequence: \""
<< match.str() << "\"\n";
}
else
{
std::cout << "Oops - not found?\n";
}
// replace a substring
std::string dest_string;
boost::regex_replace(std::back_inserter(dest_string),
s.begin(), s.end(),
re2,
"'m now a changed");
std::cout << dest_string << std::endl;
}
==[[Java]]==
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