Simple example for ccc-kata

kata.coffee

dgram = require "dgram"

server = dgram.createSocket "udp4"
client = dgram.createSocket "udp4"

finish = ->
    client.close()
    server.close()
    process.exit()

operators =
    ADD : (a, b) -> a + b
    SUBTRACT: (a, b) -> a - b
    MULTIPLY: (a, b) -> a * b

send = (uuid, result) ->
    message = new Buffer "#{uuid}:#{result}", encoding='utf8'
    client.send message, 0, message.length, 9001, "localhost"

server.on 'message', (msg,rinfo) ->
    args = msg.toString('utf8').split(':')
    name = args.shift()
    finish() if name is "__SHUTDOWN__"
    uuid = args.shift()
    send uuid, (parseInt(x, 10) for x in args).reduce operators[name]

server.bind(9000)