1. Benjamin Dumke-von der Ehe
  2. Lyfe

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Lyfe is like a box of chocolates.

You never know what it'll yield you.

This is an experimental but pretty functional project, trying to make yield-based generator functions available (to a certain extent) in "normal" JavaScript, i.e. JavaScript 1.5, the dialect that any reasonably modern browser understands.

var test = Generator(function (Yield) {
    Yield("Hello");
    if (false)
        Yield("ignore me");
    for (var i = 0; i < 6; i++)
        Yield(" world".substr(i, 1));
});

var test2 = Generator(["!"]);

var array = test.and(test2).map(function (s) { return s.toUpperCase(); }).toArray();

alert(array.join("")); // "HELLO WORLD!"


It is a self-contained and fairly small library (minified and gzipped, it's just over one kilobyte), and it should work in all modern and not-quite-so-modern browsers. The repository contains a simple test HTML page. Just open it in the browser you want to test support for; if everything's green, everything's good. I regularly check the current versions of Chrome, Firefox, Opera, Safari, and Internet Explorer (in the latter, also various emulation modes for IE8, IE7 etc).

Documentation

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So go ahead: Try it, use it, and please give feedback and suggestions. Bug reports, patches and new ideas will be very much appreciated!

Updated