Simple benchmarker function

bencher.coffee

benchmark = (name, fn) ->

    start = new Date().getTime()
    
    fn()

    delta = new Date().getTime() - start

    console.log 'Benchmark "' + name + '" runs for ' + delta + ' ms.'

    return delta


#example
benchmark 'string concat', ->
        
    string = ""

    for i in [0..10000]
        string += "abcde"

#yields : 'Benchmark "string concat" runs for 24ms.'