natterstefan

Jest - mock useState

When using import React, { useState } from 'react' in your components, this is how you can mock useState with jest.

barryblando

{
  "extends": [
    "airbnb",
    "prettier",
    "prettier/react"
  ],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {

jonlabelle

title	subtitle	author	date	source
npm vs Yarn Command Translation Cheat Sheet	CLI commands comparison	yarn	February 15, 2020	https://yarnpkg.com/en/docs/migrating-from-npm

npm vs Yarn Command Translation Cheat Sheet

robertpainsi

Commit Message Guidelines

Short (72 chars or less) summary

More detailed explanatory text. Wrap it to 72 characters. The blank
line separating the summary from the body is critical (unless you omit
the body entirely).

Write your commit message in the imperative: "Fix bug" and not "Fixed
bug" or "Fixes bug." This convention matches up with commit messages

mknabe

Use with the following

• react-router
• redux-form

You must use this compontent on the route component where the form is shown not on the form component itself. This is because this.props.route is only added to route components, and I didn't want to pass that down through props.

Inspired by this Codepad

Feedback appreciated

SerafimArts

import Reader from './Reader';
import Target from './Target';

/**
 * This is default annotation property for automatic type casting:
 * <code>
 *     @Annotation({ some: any })
 *      // => will be casts "as is" {some: any}
 *
 *     @Annotation("any")

charlietran

-- TerminalVim.app
-- This creates a shim Application that will enable you to open files from the Finder in vim using iTerm

-- To use this script: 
-- 1. Open Automator and create a new Application
-- 2. Add the "Run Applescript" action
-- 3. Paste this script into the Run Applescript section
-- 4. Save the application as TerminalVim.app in your Applications folder
-- 5. In the Finder, right click on a file and select "Open With". In that window you can set TerminalVim as a default

yefim

{
  "AWSEBDockerrunVersion": "1",
  "Image": {
    "Name": "<AWS_ACCOUNT_ID>.dkr.ecr.us-east-1.amazonaws.com/<NAME>:<TAG>",
    "Update": "true"
  },
  "Ports": [
    {
      "ContainerPort": "443"
    }

kottenator

// Implementation in ES6
function pagination(c, m) {
    var current = c,
        last = m,
        delta = 2,
        left = current - delta,
        right = current + delta + 1,
        range = [],
        rangeWithDots = [],
        l;

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs