Check if one string is a prefix of another

Question

I have two strings which I\'d like to compare: String and String:. Is there a library function that would return true when passed these two strings

Answer 1

bool IsPrefix(const std::string& prefix, const std::string& whole)
{
  return whole.size() >= prefix.size() && whole.compare(0, prefix.size(), prefix) == 0;
}