Cheng Lou

74 Flips | 5 Magazines | @flsg | Keep up with Cheng Lou on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Cheng Lou”

Introduction to Objective-C

By John Sonmez<p>A basic introduction to the Objective-C programming language and XCode IDE.<p>Start free trial now<p>Table of contents<p>Objective-C Introduction<p>…

Programming

Instantly Remove Image Backgrounds Online

Great For<p>eCommerce<p>Increase conversion rates with stunning product photos that conform to eBay and Amazon requirements at a fraction of the hassle and …

CSS3 Pong - with scoring

An exercise in the futile but fun.<p>This is a playable version of Pong complete with working scoring system -- built entirely with CSS. Not a line a …

Generate CSS for sprite sheets

What?<p>Sprite Cow helps you get the background-position, width and height of sprites within a spritesheet as a nice bit of copyable css.<p>Load the …

Some harmless, old-fashioned fun with CSS

Several years ago, the CSS :visited pseudo-selector caused a bit of a ruckus: a malicious web page could display a large set of links to assorted …

Promise-Based Validation

The concept of "Promises" has changed the way we write asynchronous JavaScript. Over the past year, many frameworks have incorporated some form of …

Color-changing gloves detect airborne toxins with shades of blue

Researchers say new materials could enhance both lab and food safety<p>Researchers in Germany have developed new color-changing gloves designed to alert lab workers to the presence of invisible toxic chemicals. Created by scientists at the Fraunhofer Research Institution for Modular Solid State …

Playing forever

A 140-tetromino run of this strategy.<p>The following outlines a method of playing forever given the following conditions, which apply in many <i>Tetris</i> …

Hyperspace

Online visual regex tester. JavaScript, Python, and PCRE.

Using regexes for extracting data from web pages? Check out ParseHub, a visual web scraping tool built by the team behind …

Colours

What's this about?<p>This project aims to uncover some insights about colours on the web, in particular, some questions I've struggled with as a …

Tearable Cloth

About the <head><p>In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things …

CSS

Garmoshka

Cooling panel sends excess heat back into outer space

Scientists have found a way to cool houses without air conditioning — and without using any power at all.<p>Shanhui Fan, professor of electrical engineering at Stanford University, and graduate students, Aaswath Raman, and Eden Rephaeli, are working on a cooling panel that could possibly replace your …

Understanding JavaScript Inheritance

So someone shoulder-taps you and asks you to explain the concepts behind JavaScript Inheritance to them. In my eyes you’ve got a few options.The …

Niice: A Design Search Engine Powered By Behance, Dribbble & Designspiration

Headlining our list of 20 useful tools and resources for Web designers, Niice is a visual search engine built to inspire you.<p>Powered by Behance, Dribbble and Designspiration, Niice pulls in content from these sources (more will be added soon) and displays them in a simple, easy-to-consume grid. For …

What were the '16 standard algorithms' that Neal Wu's coaches 'drilled into his brain' in preparation for the International Olympiad in Informatics?

Hal Burch conducted an analysis over spring break of 1999 and made an amazing discovery: there are only 16 types of programming contest problems! …

昔と違う!サラ金どこが変わったか見てみよう

Automatic Inlining in JavaScript Engines

Back when JavaScript interpreters were still slow, avoiding a function call inside a performance-critical code was very much recommended. With the …

How Parents Around the World Describe Their Children, in Charts

A fascinating new study reveals that Americans are more likely to call their children "intelligent," while European parents focus on happiness and balance. Here's why.<p>Most common child descriptors Spain | Infographics<p>If you ask American moms, we are raising a nation of baby Einsteins. Here's what …

Stacking without the z-index property

When the z-index property is not specified on any element, elements are stacked in the following order (from bottom to top):<p>The background and …

Web Development

Designing a modern email

It’s not unusual to have a flashback to the Netscape Navigator 4 and Internet Explorer 5 days when working on an HTML email. The quality of rendering …

Web Development

New Programming Jargon

Stack Overflow – like most online communities I've studied – naturally trends toward increased strictness over time. It's primarily a defense …

PLLTS is relaunching... again.

We are relaunching, finally!<p>You saw the page in a similar design for some time now, and I also saw many of you watched the page and came back over …