| // conversions | |
| let c2i = x => x(y => y + 1, 0) | |
| let c2star = x => x(y => y + '*', '') | |
| let c2b = x => x('True', 'False') | |
| let c2a = xs => xs((y, ys) => [c2i(y)].concat(ys), []) | |
| // numbers | |
| let zero = (s,z) => z | |
| let one = (s,z) => s(z) |
Testing React components seems simple at first. Then you need to test something that isn't a pure interaction and things seem to break down. These 4 patterns should help you use a pattern that is repeatable and readable for the type of test you need.
I recommend doing all setup in the most functional way possible. If you can avoid it, don't set variables in a
beforeEach. This will help ensure tests are isolated and make things a bit easier to reason about. I use a pattern
| // from the brilliant mind of sb | |
| var _catch = Promise.prototype.catch; | |
| Promise.prototype.catch = function () { | |
| return _catch.call(this, function (err) { setTimeout(function () { throw(err); }, 0); }); | |
| } |
React.js Conf tickets, everyone wants them but we only have space for 400 people, and that includes speakers, organizers and everyone’s proud parents and grandparents! If you are into speaking and have time before December 13th, you should submit a 30 minute talk or 5 minute lightning talk proposal. If you’re more into writing than speaking or coding, ReactJSNews is giving away 1 ticket for the best blog post submission. But you probably like programming, so React Native Newsletter & Exponent are giving away two tickets for the best React Native apps made with Exponent! Of course, if you like speaking, writing and programming you should do all of the above.
Rich Hickey • 3 years ago
Sorry, I have to disagree with the entire premise here.
A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.
Mastery comes from a combination of at least several of the following:
| (function() { | |
| // Do not use this library. This is just a fun example to prove a | |
| // point. | |
| var Bloop = window.Bloop = {}; | |
| var mountId = 0; | |
| function newMountId() { | |
| return mountId++; | |
| } |
Hi Nicholas,
I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I lead the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:
The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can'
| import { Component } from "React"; | |
| export var Enhance = ComposedComponent => class extends Component { | |
| constructor() { | |
| this.state = { data: null }; | |
| } | |
| componentDidMount() { | |
| this.setState({ data: 'Hello' }); | |
| } | |
| render() { |
| #!/usr/bin/env python | |
| import random | |
| import struct | |
| import sys | |
| # Most of the Fat32 class was cribbed from https://gist.github.com/jonte/4577833 | |
| def ppNum(num): | |
| return "%s (%s)" % (hex(num), num) |
