This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
13:15 <xQuasar> | HASKELL IS FOR FUCKIN FAGGOTS. YOU'RE ALL A BUNCH OF | |
| FUCKIN PUSSIES | |
13:15 <xQuasar> | JAVASCRIPT FOR LIFE FAGS | |
13:16 <luite> | hello | |
13:16 <ChongLi> | somebody has a mental illness! | |
13:16 <merijn> | Wow...I suddenly see the error of my ways and feel | |
| compelled to write Node.js! | |
13:16 <genisage> | hi | |
13:16 <luite> | you might be pleased to learn that you can compile | |
| haskell to javascript now |
import java.time.*; | |
import java.time.format.DateTimeFormatter; | |
import java.time.format.FormatStyle; | |
import java.time.temporal.ChronoUnit; | |
import java.time.temporal.TemporalAdjusters; | |
import java.util.*; | |
import static java.time.temporal.TemporalAdjusters.*; | |
public class Java8DateTimeExamples { |
(by @andrestaltz)
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.
2015-01-29 Unofficial Relay FAQ
Compilation of questions and answers about Relay from React.js Conf.
Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.
Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).
One of the many reasons I love working with Ruby is it has a rich vocabulary that allows you to accomplish your goals with a minimal amount of code. If there isn't a method that does exactly what you want, it's usually possible to build an elegant solution yourself.
Let's take the example of simulating the rolling of a die.
We can represent a die as an array of its faces.
die = [*?⚀..?⚅]
# => ["⚀", "⚁", "⚂", "⚃", "⚄", "⚅"]
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.
elem.offsetLeft
, elem.offsetTop
, elem.offsetWidth
, elem.offsetHeight
, elem.offsetParent
(ns reduxish.state-tools | |
(:require-macros [cljs.core.async.macros :refer [go go-loop]]) | |
(:require [cljs.core.async.impl.protocols :refer [WritePort ReadPort]] | |
[cljs.core.async :refer [<!]])) | |
(defn channel? | |
"A predicate that determines if the provided thing is a core.async channel" | |
[ch] | |
(and (satisfies? WritePort ch) (satisfies? ReadPort ch))) |
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
require 'minitest/autorun' | |
require 'pg' | |
require 'mysql2' | |
require 'sequel' | |
def get_db(database_name) | |
case database_name | |
when :pg | |
Sequel.connect('postgres://pierre:@localhost:5432/pierre') | |
when :mysql |