Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.
This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParentSimple implementation of debounced fetching in GraphQL to allow merging of multiple rest / database requests into one. Although this example uses GraphQL, the debouncedFetch / fetchProgramPlaycount implementations could probably be used in any context to achieve the same result.
This approach was first described by @leebyron at graphql/graphql-js#19 (comment)
For example this allows turning ten requests for playcounts from this GraphQL query into just one:
{
latestPrograms(first: 10) {
name,
playcount
| { | |
| "name": "my-app", | |
| "version": "1.0.0", | |
| "description": "My test app", | |
| "main": "src/js/index.js", | |
| "scripts": { | |
| "jshint:dist": "jshint src/js/*.js", | |
| "jshint": "npm run jshint:dist", | |
| "jscs": "jscs src/*.js", | |
| "browserify": "browserify -s Validating -o ./dist/js/build.js ./lib/index.js", |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
While I was experimenting with animation, I had to make a few basic prototypes for a layout system and see how they intertwine. Here's the API in conjunction with React:
var MyComp = React.createClass({
registerLayoutValues: function() {
return {
self: {
width: 30,
left: (get('parent', 'width') - get('self', 'width')) / 2 // Center.
}
This is a plain-text version of Bret Victor’s reading list. It was requested by hf on Hacker News.
Highly recommended things!
This is my five-star list. These are my favorite things in all the world.
A few of these works have had an extraordinary effect on my life or way of thinking. They get a sixth star. ★
Interesting part (unmounting & API) is at the end if you're not interested in the rest =).
This animation proposal is just an attempt. In case it doesn't work out, I've gathered a few examples that can test the power of a future animation system.
Parent is an infinitely spinning ball, and has a child ball that is also spinning. Clicking on the parent causes child to reverse spinning direction. This tests the ability of the animation system to compose animation, not in the sense of applying multiple interpolations to one or more variables passed onto the child (this should be trivial), but in the sense that the parent's constantly updating at the same time as the child, and has to ensure that it passes the animation commands correctly to it. This also tests that we can still intercept these animations (the clicking) and immediately change their configuration instead of queueing them.
Typing letters and let them fly in concurrently. This tests concurrency, coordination of an array of ch
Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].
Today we're looking for: