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paulirish /
Last active May 19, 2024 03:45
What forces layout/reflow. The comprehensive list.

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
Avaq / combinators.js
Last active May 19, 2024 00:21
Common combinators in JavaScript
const I = x => x
const K = x => y => x
const A = f => x => f (x)
const T = x => f => f (x)
const W = f => x => f (x) (x)
const C = f => y => x => f (x) (y)
const B = f => g => x => f (g (x))
const S = f => g => x => f (x) (g (x))
const S_ = f => g => x => f (g (x)) (x)
const S2 = f => g => h => x => f (g (x)) (h (x))
isaacsanders /
Created January 21, 2012 15:32
Joel Spolsky on Equity for Startups

This is a post by Joel Spolsky. The original post is linked at the bottom.

This is such a common question here and elsewhere that I will attempt to write the world's most canonical answer to this question. Hopefully in the future when someone on answers.onstartups asks how to split up the ownership of their new company, you can simply point to this answer.

The most important principle: Fairness, and the perception of fairness, is much more valuable than owning a large stake. Almost everything that can go wrong in a startup will go wrong, and one of the biggest things that can go wrong is huge, angry, shouting matches between the founders as to who worked harder, who owns more, whose idea was it anyway, etc. That is why I would always rather split a new company 50-50 with a friend than insist on owning 60% because "it was my idea," or because "I was more experienced" or anything else. Why? Because if I split the company 60-40, the company is going to fail when we argue ourselves to death. And if you ju

1wErt3r / SMBDIS.ASM
Created November 9, 2012 22:27
A Comprehensive Super Mario Bros. Disassembly
;by doppelganger (
;This file is provided for your own use as-is. It will require the character rom data
;and an iNES file header to get it to work.
;There are so many people I have to thank for this, that taking all the credit for
;myself would be an unforgivable act of arrogance. Without their help this would
;probably not be possible. So I thank all the peeps in the nesdev scene whose insight into
;the 6502 and the NES helped me learn how it works (you guys know who you are, there's no
staltz /
Last active May 18, 2024 05:17
The introduction to Reactive Programming you've been missing
cjoudrey / twitter.js
Created November 5, 2011 16:37
Lazy-rendering in PhantomJS
// This example shows how to render pages that perform AJAX calls
// upon page load.
// Instead of waiting a fixed amount of time before doing the render,
// we are keeping track of every resource that is loaded.
// Once all resources are loaded, we wait a small amount of time
// (resourceWait) in case these resources load other resources.
// The page is rendered after a maximum amount of time (maxRenderTime)
joelambert / README
Created June 1, 2011 11:03
Drop in replacements for setTimeout()/setInterval() that makes use of requestAnimationFrame() where possible for better performance
Drop in replace functions for setTimeout() & setInterval() that
make use of requestAnimationFrame() for performance where available
Copyright 2011, Joe Lambert.
Free to use under the MIT license.
ericelliott /
Last active May 17, 2024 03:38
Essential JavaScript Links
tkafka / LICENSE.txt
Last active May 17, 2024 02:08
Drop-in replacement for ReactCSSTransitionGroup that uses velocity.js instead of CSS transforms. Add your own transitions to `transitions` hash.
The MIT License (MIT)
Copyright (c) 2014 Tomas Kafka
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:

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

  1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }