How good are you at languages? Polyglot programmers are all the rage, but you'd be a versatile coder indeed if you were fluent in every language in the modern developer's toolbox. Yet you don't have to be a wizard in every language to be able to tell which is which. We've assembled examples of the simplest program of all -- "Hello, world" -- for 20 different programming languages. See how many code snippets you can match with the languages they were written in.