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Nalezeno "Quick Tips": 44

Promises and Static Values


Async can throw a real wrench into the cogs of our programming workflows, all despite the fact that async is the modern JavaScript pattern. While async/await helps, there’s sometimes confusion about the way to have a single function that returns a value whether it exists or needs a Promise...

Data URIs


We’re all familiar with traditional URI protocols like https, http, ftp, and file, but data URIs have become a large part of our online strategy. We can use them to display images, the Mac camera and webcams, and more. But what if we simply want to use a data URI to convey basic data? Typing...

then on Objects


Promises were a revelation in JavaScript development, allowing us to enjoy async processing and avoid callback hell. Many new APIs like Battery API, Cache API, and others use the promise API. One fact you may not know is that you can add a then method to any object to make it Promise-like!...

CSS Gradient Text


Web developers know the fight we’ve all had to improve fonts on the web. Whether it be load time, odd strategies for using custom fonts (Cufon, anyone?), or just finding the right font itself, beautifying text on the web has never come easy. That got me thinking about fonts and CSS gradients, since...

Detect if Element is a Web Component


I’ve advocated for web components since before they became a spec, mostly inspired by the Dojo Toolkit’s dijit framework. Empowering first class JavaScript widgets, as opposed to a mess of DIVs and templates, always made the most sense. Now that web components exist, and awesome...

Recursive Array.flat


There was much talk about Array.prototype.flat during its early stages, starting with the name alone. Many developers preferred the name flatten but the spec differed from MooTools’ implementation. MooTools would recursively flatten an array but the new, official flat implementation was only...

Using Array reduce


Every developer who specializes in any programming language will tell you there’s a powerful tool the language provides that they rarely use and wish they knew more about. For me, it’s Array.prototype.reduce. I quite enjoy the other Array methods like map, filter, and find, but reduce...

Type Conversion with JavaScript Arrays


JavaScript’s loose nature allows developers to employ amazing tricks to do just about anything you’d like. I’ve detailed how you can filter falsy values in arrays using a filter(Boolean) trick, but reader David Hibshman shared another trick for typecasting array values the same...

JavaScript Detect Async Function


JavaScript async/await has changed the landscape of how we code. We’re no longer stuck in callback or then hell, and our code can feel more “top down” again. Async functions require the following syntax: async function myFunction() { } To use await with a function, the function...

Remove Recent Applications from Dock


A Mac user’s dock is a sacred place. We customize our dock to no end, and if you’re ultra organized like me, you even use dock separators to group your app icons. Apple recently implemented a feature which displays three recently used apps in the dock. For basic users that’s...

Open FaceTime Call from Command Line


Communication tools are always associated with UIs, and for good reason — if you want communication to be easy and intuitive, you need easy and intuitive interfaces. We need communication tools to provide the lowest barrier of entry, since not all users will be tech savvy. For tech experts...

How to Reverse a Video


One of my favorite media utilities is ffmpeg. This command line utility allows us to do some pretty amazing stuff like; Slice videos Convert video formats Modify video speed Combine audio and video Every once in a while I see a meme or funny video that reverses a video for effect. Since ffmpeg does...

Get File MIME Type from Command Line


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


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...

CSS :placeholder-shown


One of the first plugins that would hit a new framework in the early days of JavaScript frameworks was a placeholder plugin, which is why we were so excited when HTML5 brought us the placeholder attribute. Then CSS lovers like me were thrilled when the CSS spec allowed us to style placeholders....

Set Desktop Wallpaper from Command Line on Mac


Whenever I need to accomplish a basic task that typically calls for interacting with a UI, I challenge myself to complete the task from command line. After all, most UIs are simply a mask over basic commands, especially when it comes to the operating system. Suddenly I feel like an automation...

Mac Dark Mode from Command Line


One of the best professional decisions I ever made was switching to a dark text editor theme. I suffered from horrible headaches for years, partially caused by late night coding sessions with blindingly bright computer screens. Recently Apple implemented a dark OS theme which helps my eyes,...

React indeterminate


I’ve fallen in love with React.js and JSX over the years; state-based rendering and a logical workflow have made me see the light of this modern framework. That doesn’t mean I don’t sometimes get a bit frustrated that the “simple” things seem harder than they should...

JavaScript Labels


No matter how long you’ve been a JavaScript developer, there will always be language features that you didn’t know about until you saw them in a fringe piece of code. Your reaction generally is a bit like: One of those features I see developers quizically trying to figure out...

Colorized Brackets for IDE


Coders treat their text editors and IDE’s like fragile beings, and for good reason: we spend a ton of time in them and having our tweaks and extensions can make us incredibly productive for our personal workflows. I always love hearing about what extensions and workflows other developers...

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