string ord(string const &s) {
return to_string(unsigned(s[0]));
}
The C-style cast is shorter, but less safe, so you should not use it: http://stackoverflow.com/questions/1609163/what-is-the-diffe...
Yeah, I couldn't quite decide if I should include const refs. On the one hand, it is idiomatic, but on the other hand I didn't want to clutter the code with something that is just an optimization on paper.
btw. Please fix either the size of your code or the margins of your blog. You use only half the screen width but I still have to scroll sideways in the code listing.