ReplaceOnce is a std::string replace code snippet to replace a substring by another in a certain std::string once.

Use ReplaceAll to replace all substrings in a certain std::string.


#include <string>

 

//From http://www.richelbilderbeek.nl/CppReplaceOnce.htm

const std::string ReplaceOnce(

  std::string s,

  const std::string& replaceWhat,

  const std::string& replaceWithWhat)

{

  const int pos = s.find(replaceWhat);

  if (pos==-1) return s;

  s.replace(pos,replaceWhat.size(),replaceWithWhat);

  return s;

}

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(C++) ReplaceOnce