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Write Your First Service Worker in 5 Minutes
18.3.2019
What is a service worker? A service worker is a little file that will allow you to cache files and other assets on a user’s machine. How is this different from server-side caching? Because the assets are stored on a user’s machine, rather than a server, there is no need to go across...
Would you buy a sports team token? Here are the results
15.3.2019
On Thursday, we worked with the team at Chiliz and Socios.com, a tokenized voting platform for sports teams, to run a Twitter poll to see whether the CoinMarketCap community would be interested in buying, trading or using a utility token […]
The post Would you buy a sports team token? Here...
Life After Trading: Cryptocurrencies In Everyday Life
15.3.2019
Part 3 of 3 in the Digital Gold on the Blockchain series From the CMC editorial desk: Continuing where we left off in the second post, we explore the potential of cryptocurrencies in day-to-day life. Cryptocurrencies were launched into the […]
The post Life After Trading: Cryptocurrencies...
A DEX Like No Other
13.3.2019
Liquidity, Speed, and Privacy at the Click of a Button The first generation of decentralized exchanges (DEXs) promised to revolutionize cryptocurrency trading. Finally, users would be able to buy and sell peer-to-peer, without a middleman or any centralized entity threatening […]
The post...
How to Set Commit Author
13.3.2019
I’ve worn dozens of hats on a dozen different teams during my time at Mozilla, but none has been as rewarding and challenging as community management. Whether it’s mentoring students, welcoming new contributors, or reviewing pull requests, there’s always so much to be done....
Accessibility is not a “React Problem”
11.3.2019
Leslie Cohn-Wein's main point:
While [lots of divs, inline styles, focus management problems] are valid concerns, it should be noted that nothing in React prevents us from building accessible web apps.
True. I'm quite capable (and sadly, guilty) of building inaccessible interfaces with React...
The Dark Side of the Grid
10.3.2019
Manuel Matuzovic makes the point that in order to use CSS grid in some fairly simple markup scenarios, we might be tempted to flatten our HTML to make sure all the elements we need to can participate on the grid. What we need is subgrid and non-buggy display: contents;, so I'd like to think in...
5 Ways to Get the Most Out of a Crypto Event
8.3.2019
The young blockchain industry is facing rapid growth through research, blockchain summits, conferences, and networking events. These conferences come in all forms, shapes, and sizes. The crypto world is changing at a faster rate and it is important to keep […]
The post 5 Ways to Get the Most...
Styling Based on Scroll Position
7.3.2019
Rik Schennink documents a system for being able to write CSS selectors that style a page when it has scrolled to a certain point. If you're like me, you're already on the lookout for document.addEventListener('scroll' ... and being terrified about performance. Rik gets to that right away by both...
8 Little Videos About the Firefox Shape Path Editor
7.3.2019
It sometimes takes a quick 35 seconds for a concept to really sink in. Mikael Ainalem delivers that here, in the case that you haven't quite grokked the concepts behind path-based CSS properties like clip-path and shape-outside.
Here are two of my favorites. The first demonstrates animating text...
The Bottleneck of the Web
5.3.2019
Steve Souders, "JavaScript Dominates Browser CPU":
Ten years ago the network was the main bottleneck. Today, the main bottleneck is JavaScript. The amount of JavaScript on pages is growing rapidly (nearly 5x in the last 7 years). In order to keep pages rendering and feeling fast, we need to focus...
Minimum znalostí pro práci s SQL databázemi
2.3.2019
Roky píši o Postgresu, a o tom jak správně používat relační databáze. Relační databáze byly navržené tak aby se používaly jednoduše a efektivně, a aby je mohli použít jak programátoři, tak běžní uživatelé. To, že s relační databází může pracovat neprogramátor (koncový uživatel) je v podstatě ...
Get File MIME Type from Command Line
28.2.2019
I’ve gotten skilled at shell scripting over the years. I love a good GUI but knowing how to automate makes you a much more powerful engineer. Much of my scripting requires recursing over directories and processing a file if it meets a given criteria, which is often file extension or MIME...
List USB Devices from Command Line
27.2.2019
I was recently creating a Recalbox with my 5 year old son and it was an awesome experience; I saw the excitement and curiosity in his eyes while helping him put together a video game machine. We added NES, SNES, and Nintendo 64 games to the device but it became apparent that the N64 controller...
Moving a Self-Hosted WordPress Site to WordPress.com
26.2.2019
I have a habit of getting some hosting when I need a new WordPress site. That is, a self-installed, self-hosted WordPress.org site. That's served me well over the years. I like my control. But along with that control comes a certain level of extra responsibility that sometimes just isn't worth...
JavaScript Proxy
26.2.2019
I’ve always loved the flexibility of Objects and prototypes in JavaScript, but for a long time, I felt that a level of dynamism was lacking. JavaScript eventually added get and set methods for object properties, which was an awesome step, but there was still room for improvement....
ERC20 & ERC721: How do they work?
25.2.2019
Learn more about the technical details of how ERC20 and ERC721 tokens work in a simplified explanation. From the CMC Editorial Desk: You’ve heard about ERC20 and ERC721 “token standards” – but what do they look like under the hood? […]
The post ERC20 & ERC721: How...
Chris Coyier’s Favorite CodePen Demos IV
25.2.2019
Did you know you can triple-heart things on CodePen? We’ve had that little not-so-hidden feature forever. You can click that little heart button on any Pen (or Project, Collection, or Post) on CodePen to show the creator a little love, but you can click it again and again to heart it just that...
Awesome Analytics with Keen.io (Sponsored)
21.2.2019
As a young developer, I would often make decisions based on what I considered to be common sense or what I would envision appealed to users. What a mistake. As I’ve become more experienced as a developer and a businessman, I’ve realized that analytics are the best way to make...
Building a Landing Page Fast Using the Visual Composer Website Builder (Sponsored)
20.2.2019
What if it were possible to build a landing page from top to bottom, including a header and a footer, and do so without any need for writing code? And even if it was possible, could you reasonably expect to do so as easily and quickly as putting together a puzzle designed for children...