#include <cstddef>
#include "stringfunct.h"

using namespace std;

string& replaceAll(string& context, const string& from, const string& to) {
  size_t lookHere = 0;
  size_t foundHere;
  
  while ((foundHere = context.find(from, lookHere)) != string::npos) {
    context.replace(foundHere, from.size(), to);
    lookHere = foundHere + to.size();
  }
  return context;
}