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Forked from aemkei/LICENSE.txt
Last active January 9, 2016 16:41
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Game of Life - 140byt.es
Raw
README.md

140byt.es

A tweet-sized, fork-to-play, community-curated collection of JavaScript.

How to play

  1. Click the Fork button above to fork this gist.
  2. Modify all the files to according to the rules below.
  3. Save your entry and tweet it up!

Keep in mind that thanks to the awesome sensibilities of the GitHub team, gists are just repos. So feel free to clone yours and work locally for a more comfortable environment, and to allow commit messages.

Rules

All entries must exist in an index.js file, whose contents are

  1. an assignable, valid Javascript expression that
  2. contains no more than 140 bytes, and
  3. does not leak to the global scope.

All entries must also be licensed under the WTFPL or equally permissive license.

For more information

The 140byt.es site hasn't launched yet, but for now follow @140bytes on Twitter.

To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.

140byt.es is brought to you by Jed Schmidt. It was inspired by work from Thomas Fuchs and Dustin Diaz.

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annotated.js
function(){
// make sure
// to annotate
// your code
// so everyone
// can learn
// from it!
// see jed's entries
// for examples.
}
Raw
index.js
function(){/* Your entry, a useful, unique, and valid JavaScript expression that packs as much functionality into 140 bytes as possible. */}
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LICENSE.txt
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
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package.json
{
"name": "theNameOfYourLibWhichMustBeAValidCamelCasedJavaScriptIdentifier",
"description": "This should be a short description of your entry.",
"keywords": [
"five",
"descriptive",
"keywords",
"or",
"fewer"
]
}
Raw
test.html
<body>
<div>Expected value: <b>undefined</b></div>
<div>Actual value: <b id="ret"></b></div>
</body>
<script>
// write a small example that shows off the API for your example
// and tests it in one fell swoop.
var myFunction = function(){ /* the code here should be identical to the entry. */ }
var ret = myFunction()
document.getElementById( "ret" ).innerHTML = ret
</script>
@Alexei-B
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Alexei-B commented Aug 12, 2015

Worked on the classic game of life and got a 92 byte result with the same functionality as previous iterations, as well as a 118 byte result with wrapping issues fixed, which can be seen here: http://output.jsbin.com/zebuxi

(a,b,c,d)=>{a.map((e,f)=>{for(d=9,e=0;d--;b[f]=e==3|e==4&a[f])e+=f%c|d%3&&(f+1)%c|(d+1)%3&&~~a[f+d%3-1+~~(d/3)*c-c]})}

I decided to use arrow functions when I noticed they were implemented on chrome and firefox, which saved quite a few bytes in combination with Array.prototype.map. I also implemented a flattened walk loop instead of a precalculated walk as most other implementations I've seen, which saved bytes even without the arrow functions.

I encourage you to check out the javascript as I wrote it because I left a history of changes by copy pasting into a new line every iteration: http://jsbin.com/zebuxi/edit?js

Thanks to @aemkei I've really enjoyed reading the code you've written for 140bytes and on your website, a real inspiration.

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