// we could write the above example as:
var anon = (a, b) => a + b;
// or
var anon = (a, b) => { return a + b };
// if we only have one parameter we can loose the parentheses
var anon = a => a;
// and without parameters
var () => {} // noop

// this looks pretty nice when you change something like:
[1,2,3,4].filter(function (value) {return value % 2 === 0});
// to:
[1,2,3,4].filter(value => value % 2 === 0);