Coffee Script vs. Javascript

gistfile1.txt

JAVASCRIPT
==========

var c;
client.send({
    otherClients: (function() {
    var _i, _len, _results;
    _results = [];
    for (_i = 0, _len = clients.length; _i < _len; _i++) {
        c = clients[_i];
        if (c !== client) {
            _results.push(nameHash[c]);
        }
    }
    return _results;
});

COFFEE SCRIPT
=============

client.send { otherClients: nameHash[c] for c in clients when c != client }