gistfile1.js

//
// js port scala's Tuple2
//

var Tuple2 = function(arg1, arg2) {
  var self = (this == window) ? {} : this;
  self._1 = arg1;
  self._2 = arg2;
  return self;
}

//
// example
//

var a = Tuple2('hello', 'world')
log(a._1); // => 'hello'
log(a._2); // => 'world'

var b = new Tuple2('foo', 'bar')
log(b._1); // => 'foo'
log(b._2); // => 'world'