Devhints.io
@devhints
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I help developers learn new things. Random TIL's everyday!
Joined October 2017
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Did you know you can search for CSS properties in Chrome's inspector? Great for hunting that one rule. 👌
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Great for HTML comments!
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css: the new `all: initial;` will reset everything (margins, padding, and so on). You need cssnext to make it work for now, though. ⚡
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Check out these Vim digraphs: type ctrl-k followed by the letters in blue to enter these Greek letters. Thanks fo ehrenmurdick on GitHub!
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Happy new year! Got a new chatsheet for Ruby's stimulus-reflex. Thanks to existentialmutt on GitHub for this :)
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This is what it's all about: helpin' a brother (or sister) out. <3
Every time I spend a couple of months away from a technology, I feel a little rusty when I come back to it. On times like that, cheatsheets can prove useful.
Like this one for
@reactjs
:
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We are migrating hosts for right now, and might be causing some downtime. Please bear with us!
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You can convert videos to animated GIF's in the command line using mplayer + imagemagick. ⚡️
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HTTPie is a very useful command-line HTTP client! Kinda like curl, but easier ⚡️
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Did you know bash supports arrays?
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HTML: There's <input type='time'> and <input type='date'>, never mess with 3rd party datepickers again! ⚡️
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ZSH: If you forgot to add 'sudo' on your last command, type "sudo !!" ⚡️
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JavaScript: shell.js lets you do some common CLI commands in Node.js. ⚡️
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JavaScript: convert any date into a UNIX timestamp by adding + to it, eg, `+new Date()` ⚡️
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Thanks for all the support on Devhints over at
@ProductHunt
! <3
Documentation is annoying to write AND annoying to read 💻
DevHints creates TL;DR for docs to fix the latter 🙏
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Redux (js): devhints has a list of a few interesting & recommended Redux plugins. ⚡
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Stylus (css): Stylus supports both CSS-style syntax and indent-style syntax flawlessly. ⚡
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React: use componentDidCatch() to catch errors in your components. ⚡️
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CLI: change extensions easily using `rename`:
$ rename -s .jpg .jpeg *
⚡
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CSS: You can have multiple backgrounds by separating them with commas. ⚡️
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React: optimize your components by using React.Component instead of React.Component. ⚡️
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jest (js): beforeEach() runs before every test, beforeAll() runs just once. ⚡
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Jest (JavaScript): you can mock setTimeout/setInterval timers in tests. ⚡️
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Had to reject an amazing pull request today, but that doesn't mean it doesn't deserve a look. Here's a cheatsheet for the Goby language:
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CSS: The `background` property is shorthand for color, image, position, size, repeat and attachment. ⚡️
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Git: `git log --pretty="format:%an" | sort | uniq` will show all authors of a Git repo. ⚡️
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Xpath: You can test out xpath expressions in your browser via $x('//div') ⚡️
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Ruby: factory_bot (aka factory_girl) lets you make factories for Ruby tests easily ⚡️
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Document your JavaScript with Jsdoc comments. Here's a quick overview of common features:
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Vim: aside from Esc, you can exit insert mode using ^[ or ^C. ♥️
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CSS: The `font` property is shorthand, but the `font-family` segment is required. ·
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Bash: `rm image-{a,b,c}.jpg` will remove image-a.jpg to image-c.jpg. ⚡️
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Bash: "named pipes" lets you get the output of a command and use it like it's a file. ⚡️
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A quick video review of Devhints.io. Thanks, Coder Catchup!
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The easiest way to test your React apps is using Jest and Enzyme together.
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Spacemacs (emacs): `SPC bn` goes to the next buffer,` SPC bp` goes to the previous. ⚡
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Atom: ctrl+shift+k deletes the current line. ctrl+shift+d deletes it. ⚡️
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npm & Semver: version ranges ^1 and ~1 and 1 and 1.x are all the same. ⚡️
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@yowainwright
@rstacruz
<3 btw, I really suggest using Jest instead of mocha-jsdom! Jest has built-in support for jsdom.
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JavaScript: in ES2015, you can now do multiline strings with backticks:
console.log(`
hello
world
`)
⚡️
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