A rather geeky/technical weblog, est. 2001, by Bramus
runes – Unicode-aware JS string splitting with full Emoji supportAt Small Town Heroes I’m currently working on a newsreader app built using React Native. On Android (even 7.1.1) we noticed this weird issue where some emojis would render incorrectly when we were applying styling on it using index-based ranges: the range seemed to be off by one, splitting the emoji into its separate bytes. …
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react-devtools with React NativeThe “React Developer Tools” is a very handy browser extension which lets inspect and manipulate the React component hierarchy along with their props and state. There’s also a standalone version, to be used with React Native. To use it, install it as a project dependency: npm install –save-dev react-devtools And then adjust the scripts section …
UPDATE 2017.08.03: This should be fixed with the release of HAXM 6.1.1. Make sure you’re running the latest version of Android Studio On a recent project I was working on, I wasn’t able to start the Android Emulator/Simulator anymore from within Android Studio. Every time I launched it from Android Studio it would start, but …
Continue reading “Fix for the Android Emulator (Android Simulator) crashing during launch”
I’m not sure which update exactly broke it, but recently I got this when trying to launch the Android Emulator from the CLI: $ emulator -list-avds Nexus_5X_API_25 $ emulator -avd Nexus_5X_API_25 [140735953220544]:ERROR:./android/qt/qt_setup.cpp:28:Qt library not found at ../emulator/lib64/qt/lib Could not launch ‘../emulator/qemu/darwin-x86_64/qemu-system-i386′: No such file or directory Apparently there’s some relative path linking happening, which of …
Continue reading “Launching the Android Emulator from the Command Line”
Profile of one of the dives I did in the Maldives, displayed using Subsurface Download the Virtual COM Port Drivers and reboot your iDevice. After that Subsurface should recognise your Suunto Vyper. As a diver one logs all his/her dives into a paper logbook. In the paper logbook one generally notes things like the gear …
Continue reading “Using Subsurface with a Suunto Vyper on macOS (OS X)”
Back in August 2014 I pre-ordered a Navdy. Last week, 2 years later than expected, my unit finally arrived. Was this long wait worth the while? YES! Navdy? The Navdy is an aftermarket “Head-Up Display” for your car. Where your Bluetooth-enabled car radio acts as an audio extension to your smartphone, the Navdy acts as …
Say you have a JavaScript Array containing duplicate values. By creating a Set – which only stores unique values (primitive values or object references) – and then spreading that Set into a new Array you can easily dedupe the given Array: // Array with duplicates const arr = [7, 3, 1, 3, 3, 7]; // …
Continue reading “ES6 ES2015: Easily remove duplicates from an Array”
With touching the topic “offline” in the previous post, I was reminded of the T-Rex that Chrome shows when it’s offline. Most of us think it’s just a fun little pixel dinosaur which acts as facade for a game you can play whilst there’s no active internet connection, but there’s more to it. The T-Rex …
Continue reading “Why does Chrome show a T-Rex when it’s offline?”
nth-of-m-child(n,m) Selector. As explained/linked in (ab)using CSS3’s :nth-child() selector to invent new ones and Quantity Queries for CSS it’s possible to create new types of CSS selectors by cleverly combining a few the available CSS pseudo selectors. One of those new selectors is the :nth-of-m-child selector: /** * :nth-of-m-child selector * This selector will select the …
UPDATE February 2018: The proposed operator got renamed from “Null Propagation Operator” to “Optional Chaining Operator”. This post has been updated to reflect this name-change. UPDATE December 2019: This feature has now advanced to Stage-4 and will be part of the ES2020 Specification! 🎉 Earlier today I was delighted to see that the “Optional Chaining …
Continue reading “ESNext: JavaScript “Optional Chaining Operator””