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:
i386 : iPhone Simulator | |
x86_64 : iPhone Simulator | |
arm64 : iPhone Simulator | |
iPhone1,1 : iPhone | |
iPhone1,2 : iPhone 3G | |
iPhone2,1 : iPhone 3GS | |
iPhone3,1 : iPhone 4 | |
iPhone3,2 : iPhone 4 GSM Rev A | |
iPhone3,3 : iPhone 4 CDMA | |
iPhone4,1 : iPhone 4S |
<html> | |
<body> | |
<!-- really dirty! this is just a test drive ;) --> | |
<script type="text/javascript" src="https://raw.github.com/mozilla/pdf.js/gh-pages/build/pdf.js"></script> | |
<script type="text/javascript"> | |
function renderPDF(url, canvasContainer, options) { | |
var options = options || { scale: 1 }; |
// Takes a credit card string value and returns true on valid number | |
function valid_credit_card(value) { | |
// Accept only digits, dashes or spaces | |
if (/[^0-9-\s]+/.test(value)) return false; | |
// The Luhn Algorithm. It's so pretty. | |
let nCheck = 0, bEven = false; | |
value = value.replace(/\D/g, ""); | |
for (var n = value.length - 1; n >= 0; n--) { |
⇐ back to the gist-blog at jrw.fi
Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.
I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.
This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso
<?php | |
// (string) $message - message to be passed to Slack | |
// (string) $room - room in which to write the message, too | |
// (string) $icon - You can set up custom emoji icons to use with each message | |
public static function slack($message, $room = "engineering", $icon = ":longbox:") { | |
$room = ($room) ? $room : "engineering"; | |
$data = "payload=" . json_encode(array( | |
"channel" => "#{$room}", | |
"text" => $message, |
/* | |
* Hex Opacity Values | |
*/ | |
100% — FF | |
95% — F2 | |
90% — E6 | |
85% — D9 | |
80% — CC | |
75% — BF |
(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.
These steps should have been mentioned in the prerequisites of the Laravel Installation Guide, since I'm surely not the only person trying to get Laravel running on macOS.
Install Mcrypt using Homebrew and PECL (comes with PHP)
# PHP 7.3
// <img id="myimage" src="http://placecage/1280/720"> | |
var image = document.getElementById('myimage'); | |
var mc = new Hammer.Manager(image); | |
var pinch = new Hammer.Pinch(); | |
var pan = new Hammer.Pan(); | |
pinch.recognizeWith(pan); |