taozhi taozhi8833998

Writing template strings in Markdown

With template strings coming to ES6, the backtick (`) means something in Markdown and in JavaScript. If you write this:

To display a message, write `alert(`hello world!`)`.

it'll render like this:

To display a message, write alert(hello world!).

Drop in replace functions for setTimeout and setInterval that make use of requestAnimationFrame.

See overview article and Paul Irish's earlier post.

Courtesty of Joe Lambert

Copyright 2011, Joe Lambert.
Free to use under the MIT license.
http://www.opensource.org/licenses/mit-license.php

byte-size tuts

by alexander white ©

golang tutorials

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()

PostgreSQL & PostGIS Cheatsheet

This is a collection of information on PostgreSQL and PostGIS for what I tend to use most often.

	function memorySizeOf(obj) {
	var bytes = 0;

	function sizeOf(obj) {
	if(obj !== null && obj !== undefined) {
	switch(typeof obj) {
	case 'number':
	bytes += 8;
	break;
	case 'string':

	# Make mouse useful in copy mode
	setw -g mode-mouse on

	# Allow mouse to select which pane to use
	set -g mouse-select-pane on

	# Allow mouse dragging to resize panes
	set -g mouse-resize-pane on

	# Allow mouse to select windows

	var CubicBezier = function(canvas, opts){
	if(!opts) opts = {};

	this.start = opts.start \|\| new Vec2(100,100);
	this.end = opts.end \|\| new Vec2(400, 400);

	this.c1 = opts.c1 \|\| new Vec2(100, 300);
	this.c2 = opts.c2 \|\| new Vec2(300, 100);

	this.curve = new fabric.Path( this.toSVGPath() );

	# put this in your .bash_profile
	if [ $ITERM_SESSION_ID ]; then
	export PROMPT_COMMAND='echo -ne "\033];${PWD##*/}\007"; ':"$PROMPT_COMMAND";
	fi

	# Piece-by-Piece Explanation:
	# the if condition makes sure we only screw with $PROMPT_COMMAND if we're in an iTerm environment
	# iTerm happens to give each session a unique $ITERM_SESSION_ID we can use, $ITERM_PROFILE is an option too
	# the $PROMPT_COMMAND environment variable is executed every time a command is run
	# see: ss64.com/bash/syntax-prompt.html

	# Usage:
	# source iterm2.zsh

	# iTerm2 window/tab color commands
	# Requires iTerm2 >= Build 1.0.0.20110804
	# http://code.google.com/p/iterm2/wiki/ProprietaryEscapeCodes
	tab-color() {
	echo -ne "\033]6;1;bg;red;brightness;$1\a"
	echo -ne "\033]6;1;bg;green;brightness;$2\a"
	echo -ne "\033]6;1;bg;blue;brightness;$3\a"