John radiofreejohn

This information applies to the PICO-8 0.1.6 release.

This document is here to help folks with a proficiency in Lua understand the limitations and discrepencies between Lua and PICO-8's Lua.

You can always view the manual or yellowafterlife's extended 0.1.1 manual.

General

anything written in uppercase the PICO-8 editor or .p8 is made lowercase by the editor. → editing the .p8 file directly can work
print(function() end) outputs the string function instead of the string function: 0x0000000.

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

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

THIS GIST WAS MOVED TO TERMSTANDARD/COLORS REPOSITORY.

PLEASE ASK YOUR QUESTIONS OR ADD ANY SUGGESTIONS AS A REPOSITORY ISSUES OR PULL REQUESTS INSTEAD!

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

	// Comcast Cable Communications, LLC Proprietary. Copyright 2014.
	// Intended use is to display browser notifications for critical and time sensitive events.
	var _ComcastAlert = (function(){
	return {
	SYS_URL: '/e8f6b078-0f35-11de-85c5-efc5ef23aa1f/aupm/notify.do'
	, dragObj: {zIndex: 999999}
	, browser: null
	, comcastCheck: 1
	, comcastTimer: null
	, xmlhttp: null

	On Thu, Jan 29, 2015 at 9:45 AM, <joey@byjoeybaker.com> wrote:
	Hello–

	I recently updated to your new snippet, but it violates the Content Security Protocol settings I have in place because it uses `eval`. It there anyway to opt-out of a script that uses `eval`?



	On 29 January, 2015 at 12:08:25 PM, John Clover (john@heapanalytics.com) wrote:

	Hey Joey

	import java.io.IOException;

	/**
	* Class that copies stdin to stdout, as compained about as not being cleanly
	* writable in Java on Hacker News.
	* In real code, you would just write IOUtils.copy(System.in, System.out),
	* which does basically the same thing.
	* This does not catch any exceptions as a) this is just an "exercise" and
	* b) all we could do with them is pretty-print them. So let the runtime
	* print them for you.

	/*
	input is 1 line with 10 cards, black first, white second

	cards are sorted by value (suit is disregarded when sorting)
	when tested for hand type -- they are sorted again based on the
	order of evaluation of the hand when comparing the two, so
	full house will put the 3 of a kind highest, then the 2 of a kind.
	A pair will have the pair as the last two cards, and the rest
	sorted by from lowest to highest. This makes it easy to determine
	the winner by comparing down from the top.