scheakur

// Original is http://d.hatena.ne.jp/uupaa/20090116/1232051707
var array = [];
var notarray = {};

(function () {
  var S = new Date*1;
  var toString = Object.prototype.toString;
  for (var i = 0; i < 5000000; i++) { ( toString.call(array) === "[object Array]" ) }
  print('Array#Object.prototype.toString.call : ' + (new Date-S));
}());

rxaviers

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

orzFly

=begin

RGSSRuntime Module 1.0 for RPG Maker XP/VX/VX Ace
http://orzFly.com/html/rgssruntime.html

Copyright 2013-2014 Yeechan Lu a.k.a. orzFly <i@orzFly.com>
Partial Copyright 2013-2014 Seiran A. [http://seiran.mist.so/]

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),

torgeir

/*
What happens?
- `new Type().what` is looked up with a call to `get` on the proxy
- a function is returned that will look up `METHOD_NAME` when called
- `METHOD_NAME` is called because of the `()` behind `new Type().what`
- if `METHOD_NAME` exists on you object, your own function is called
- if not, because of prototypal inheritance, `get` is called again
- `name` is now `METHOD_NAME` and we can throw as we know `METHOD_NAME` is not implemented on the type

credits http://soft.vub.ac.be/~tvcutsem/proxies/

Youka

# Load importer part of fiddle (ffi) library
require 'fiddle/import'

# Create module as body for an importer instance
module MessageBox
	# Extend this module to an importer
	extend Fiddle::Importer
	# Load 'user32' dynamic library into this importer
	dlload 'user32'
	# Set C aliases to this importer for further understanding of function signatures

isaacs

# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.

paulirish

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.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

westc

function limitEval(code, fnOnStop, opt_timeoutInMS) {
  var id = Math.random() + 1,
    blob = new Blob(
      ['onmessage=function(a){a=a.data;postMessage({i:a.i+1});postMessage({r:eval.call(this,a.c),i:a.i})};'],
      { type:'text/javascript' }
    ),
    myWorker = new Worker(URL.createObjectURL(blob));

  function onDone() {
    URL.revokeObjectURL(blob);

pascaldekloe

// This is free and unencumbered software released into the public domain.

// Marshals a string to an Uint8Array.
function encodeUTF8(s) {
	var i = 0, bytes = new Uint8Array(s.length * 4);
	for (var ci = 0; ci != s.length; ci++) {
		var c = s.charCodeAt(ci);
		if (c < 128) {
			bytes[i++] = c;
			continue;

Rich-Harris

Edit — February 2019

This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:

• TC39 is currently moving forward with a slightly different version of TLA, referred to as 'variant B', in which a module with TLA doesn't block sibling execution. This vastly reduces the danger of parallelizable work happening in serial and thereby delaying startup, which was the concern that motivated me to write this gist
• In the wild, we're seeing (async main(){...}()) as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problems
• Therefore, a version of TLA that solves the original issue is a valuable addition to the language, and I'm in full support of the current proposal, which you can read here.

I'll leave the rest of this document unedited, for archaeological