Monad

Modan by Douglas Crockford http://www.youtube.com/watch?v=b0EF0VTs9Dc

JavaScript

function MONAD() {
  return function unit(value) {
    var monad = Object.create(null);
    monad.bind = function(func) {
      return func(value);
    };
    return monad;
  };
}

var identity = MONAD();
console.log(identity);
var monad = identity("Hello world.");
monad.bind(alert);