Contrasts: C++ & Ruby from http://devblog.avdi.org/2013/10/16/sorting-lines-in-5-languages/

gistfile1.cpp

This is a C++ program that sorts lines read from the first arg and writes them to the second arg.

#include<string>
#include<vector>
#include<algorithm>
#include<fstream>

using namespace std;

int main(int argc, char **argv) {
  ifstream ifile(argv[1]);
  ofstream ofile(argv[2]);
  string line;
  vector<string> data;
  while(getline(ifile, line)) {
    data.push_back(line);
  }
  sort(data.begin(), data.end());
  for(const auto &i : data) {
    ofile << i << std::endl;
  }
  return 0;
}

This is the same program written in Ruby

File.write(ARGV.pop, ARGF.each_line.sort.join)

wow