jussi-kalliokoski/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    140byt.es

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


Click the  button above to fork this gist.
Modify all the files to according to the rules below.
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

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

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

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and 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, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

  
## annotated.js
function (
  n // this is declared here to avoid a comma in the replacing function,
    // although now that we're using arrow functions we couldn't have it
    // any other way anyway
) // note the single expression function body (Firefox only)
"xxxxxxxx-xxxx-3xxx-1xxx-xxxxxxxxxxxx" // we use a simple template to generate the UUIDv4
.replace(/x|1/g, // replace x's and 1s in the template
  x=> // ES6 arrow function! note the single argument, so we don't need parenthesis
  ( // wrap everything in parenthesis so that we can avoid using return and curlies
    // without the parenthesis, the part after the comma would be treated as a third
    // argument for replace() of course
    (n=Math.random()) // assign a random number to a variable so that we
                      // don't need to type it twice
    , // comma instead of semicolon to keep it as one expression
    (~~( // bitwise floor
      +x ? // if converting the character to a number yields a truthy value, i.e. 1
        n * 4 + 8 : // get number where 12 > number >= 8
        n * 16 // get a number where 16 > number >= 0
    ))
    .toString(16) // Get a hexadecimal representation of the number
  )
)

## index.js
function(n)"xxxxxxxx-xxxx-3xxx-1xxx-xxxxxxxxxxxx".replace(/x|1/g,x=>((n=Math.random()),(~~(+x?n*4+8:n*16)).toString(16)))

## LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Jussi Kalliokoski <jussi.kalliokoski@gmail.com>

 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.

## package.json
{
  "name": "ShortUuidV4",

  "description": "A short UUIDv4 generator.",

  "keywords": [
    "uuid",
    "crypto"
  ]
}

## test.html
<!DOCTYPE html>
<title>Foo</title>
<div>Expected value: <b>An UUIDv4</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
  // write a small example that shows off the API for your example
  // and tests it in one fell swoop.

  var myFunction = function(n)"xxxxxxxx-xxxx-3xxx-1xxx-xxxxxxxxxxxx".replace(/x|1/g,x=>((n=Math.random()),(~~(+x?n*4+8:n*16)).toString(16)));

  document.getElementById( "ret" ).innerHTML = myFunction()
</script>
	function (
	n // this is declared here to avoid a comma in the replacing function,
	// although now that we're using arrow functions we couldn't have it
	// any other way anyway
	) // note the single expression function body (Firefox only)
	"xxxxxxxx-xxxx-3xxx-1xxx-xxxxxxxxxxxx" // we use a simple template to generate the UUIDv4
	.replace(/x\|1/g, // replace x's and 1s in the template
	x=> // ES6 arrow function! note the single argument, so we don't need parenthesis
	( // wrap everything in parenthesis so that we can avoid using return and curlies
	// without the parenthesis, the part after the comma would be treated as a third
	// argument for replace() of course
	(n=Math.random()) // assign a random number to a variable so that we
	// don't need to type it twice
	, // comma instead of semicolon to keep it as one expression
	(~~( // bitwise floor
	+x ? // if converting the character to a number yields a truthy value, i.e. 1
	n * 4 + 8 : // get number where 12 > number >= 8
	n * 16 // get a number where 16 > number >= 0
	))
	.toString(16) // Get a hexadecimal representation of the number
	)
	)
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Jussi Kalliokoski <jussi.kalliokoski@gmail.com>

	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.
	{
	"name": "ShortUuidV4",

	"description": "A short UUIDv4 generator.",

	"keywords": [
	"uuid",
	"crypto"
	]
	}
	<!DOCTYPE html>
	<title>Foo</title>
	<div>Expected value: <b>An UUIDv4</b></div>
	<div>Actual value: <b id="ret"></b></div>
	<script>
	// write a small example that shows off the API for your example
	// and tests it in one fell swoop.

	var myFunction = function(n)"xxxxxxxx-xxxx-3xxx-1xxx-xxxxxxxxxxxx".replace(/x\|1/g,x=>((n=Math.random()),(~~(+x?n4+8:n16)).toString(16)));

	document.getElementById( "ret" ).innerHTML = myFunction()
	</script>