GerHobbelt

Copied from https://gist.github.com/kevinSuttle/1997924
Copied from http://code.lancepollard.com/complete-list-of-html-meta-tags/

DEPRECATED

Please see: https://github.com/kevinSuttle/html-meta-tags, thanks for the idea @dandv!

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GerHobbelt

Gist markdown examples

A collection of Markdown code and tricks that were tested to work in Gist.

This and all public gists in https://gist.github.com/ww9 are Public Domain. Do whatever you want with it including , no need to credit me.

Todo

• Reformat this whole document and assimilate these:

GerHobbelt

A list of GitHub emoji markup, adapted from rxavier's Complete list of github markdown emoji markup, generated with a Grunt script for maintainability (see repository).

Additional original source material: http://unicode.org/emoji/charts/full-emoji-list.html

This table is available as a gist at https://gist.github.com/GerHobbelt/b9b87a2257ddd5251a45628d61385717 and as part of the build repo at https://github.com/GerHobbelt/emoji-list/blob/master/dist/emoji-list.md

Table of Contents

• Smileys and People

GerHobbelt

#!/bin/bash
# 
# Work repo: https://gist.github.com/GerHobbelt/5f084b559d3197c04e90dfd018a00ee6
#
# Sources:
# https://stackoverflow.com/a/16162000/1635910
# https://gist.github.com/myusuf3/7f645819ded92bda6677
# https://stackoverflow.com/questions/1260748/how-do-i-remove-a-submodule/1260982#1260982
# 
if [ $# -ne 1 ]; then

GerHobbelt

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()

GerHobbelt

// https://gist.github.com/juliandavidmr/5c545f8cc1fe58d19986625a7a17f756

/* description: Parses end executes mathematical expressions. */

/* lexical grammar */
%lex
%%

\s+                   /* skip whitespace */
[0-9]+("."[0-9]+)?\b  return 'NUMBER'

GerHobbelt

Making Javascript faster

This is a list of guidelines to make your Javascript faster, often associated with jsPerf benchmarks.

Profile before optimizing

If you have an existing codebase, don't get carried away with premature optimizations. Profile to find the slow bits and pick the low hanging fruit.

GerHobbelt

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

GerHobbelt

Here's a d3 plugin that allows you to create a polygon selection. You instantiate it just like d3.svg.brush.

var brush = d3.svg.polybrush();

It has an extra public method that 'brush' does not, and that's 'isWithinExtent(x, y)'. You can use this method to test if a given point falls within the drawn extent.

if (brush.isWithinExtent(x, y)) {
  console.log("I'm inside!");
}

GerHobbelt

Lots of examples of using d3.nest function

See it running at [http://bl.ocks.org/3695277] - original at [http://bl.ocks.org/3176159]

Documentation: [https://github.com/mbostock/d3/wiki/Arrays]