Skip to content

Instantly share code, notes, and snippets.

View erlenstar's full-sized avatar

Jeff Zerger erlenstar

  • Phykos, PBC
  • Pacifica, CA
View GitHub Profile
@banksean
banksean / perlin-noise-classical.js
Created February 15, 2010 10:00
two Perlin noise generators in javascript. The simplex version is about 10% faster (in Chrome at least, haven't tried other browsers)
// Ported from Stefan Gustavson's java implementation
// http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf
// Read Stefan's excellent paper for details on how this code works.
//
// Sean McCullough banksean@gmail.com
/**
* You can pass in a random number generator object if you like.
* It is assumed to have a random() method.
*/
@isaacs
isaacs / comma-first-var.js
Created April 6, 2010 19:24
A better coding convention for lists and object literals in JavaScript
// See comments below.
// This code sample and justification brought to you by
// Isaac Z. Schlueter, aka isaacs
// standard style
var a = "ape",
b = "bat",
c = "cat",
d = "dog",

A good commit message looks like this:

Header line: explaining the commit in one line

Body of commit message is a few lines of text, explaining things
in more detail, possibly giving some background about the issue
being fixed, etc etc.

The body of the commit message can be several paragraphs, and
please do proper word-wrap and keep columns shorter than about
@jonobr1
jonobr1 / Superformula.js
Created February 23, 2012 17:00
@brysonian's Superformula in JavaScript
(function() {
var root = this;
var previousSuperformula = root.Superformula;
var NP = 360, phi = Math.PI * 2 / NP;
var Superformula = root.Superformula = function(m, n1, n2, n3) {
@bunkat
bunkat / index.html
Last active January 10, 2024 18:18
Swimlane Chart using d3.js
<!--
The MIT License (MIT)
Copyright (c) 2013 bill@bunkat.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

High level style in javascript.

Opinions are like assholes, every one has got one.

This one is mine.

Punctuation: who cares?

Punctuation is a bikeshed. Put your semicolons, whitespace, and commas where you like them.

@walkermatt
walkermatt / debounce.py
Created June 4, 2012 21:44
A debounce function decorator in Python similar to the one in underscore.js, tested with 2.7
from threading import Timer
def debounce(wait):
""" Decorator that will postpone a functions
execution until after wait seconds
have elapsed since the last time it was invoked. """
def decorator(fn):
def debounced(*args, **kwargs):
def call_it():
@tmcw
tmcw / togeo.py
Created August 11, 2012 18:53
geo-assign any arbitrary image to a geotiff usable in tilemill
import subprocess
import sys, re
MERC = '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs'
infile = sys.argv[1]
info_output = subprocess.Popen(['gdalinfo', infile], stdout=subprocess.PIPE).communicate()[0]
size_is_re = re.compile('Size is (?P<width>\d+), (?P<height>\d+)')
size_is = filter(lambda x: x, map(lambda x: size_is_re.match(x), info_output.split('\n')))
@dfm
dfm / LICENSE
Last active September 9, 2023 23:56
XKCD-style plots in d3
Copyright (c) 2012–2013 Daniel Foreman-Mackey
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
@mbostock
mbostock / README.md
Last active June 7, 2023 18:33
Underscore’s Equivalents in D3

Collections

each(array)

Underscore example:

_.each([1, 2, 3], function(num) { alert(num); });