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10 JavaScript Terms You Should Know

From currying to closures there are quite a number of special words used in JavaScript. These will not only help you increase your vocabulary but also better understand JavaScript. Special terms are normally found in documentation and technical articles. But some of them like closures are pretty standard things to know about. Knowing what the word itself means can help you know the concept it's named for better.

1. Arity
2. Anonymous
3. Closure
4. Currying
5. Hoisting
6. Mutation

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Install NVM, NodeJS, Yarn via Homebrew

Prerequisites

• Homebrew should be installed (Command line tools for Xcode are included).

Getting start

Install NVM and NodeJS

1. Install nvm via Homebrew

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Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

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<!-- import here your svg logo (in drawables)
See https://stackoverflow.com/questions/30923205/easiest-way-to-use-svg-in-android/39266840#39266840
-->

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# gcloud auth activate-service-account --key-file=85.json
# gcloud projects list

project="my-projet"
space=""

echo "gcloud auth list"
gcloud auth list
echo -e "$space"

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// import the library
import PropTypes from 'prop-types';

// define a component
class Greeting extends React.Component {
  render() {
    return (
      <h1>Hello, {this.props.name}</h1>
    );
  }

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1. Install Node.js

• Follow the steps given here to install Node.js and NPM.
• Verify whether NPM is installed by typing npm -v in a terminal window.

2. Install React Native CLI

• npm install -g react-native-cli

3. Setup Android Development Environment

• Download and install Android Studio as explained here.
• Run Android Studio and open the SDK Manager. Under the SDK Platforms tab, check Show Package Details, expand Android 6.0 (Marshmallow) and check the following:

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Note:

When this guide is more complete, the plan is to move it into Prepack documentation.
For now I put it out as a gist to gather initial feedback.

A Gentle Introduction to Prepack (Part 1)

If you're building JavaScript apps, you might already be familiar with some tools that compile JavaScript code to equivalent JavaScript code:

• Babel lets you use newer JavaScript language features, and outputs equivalent code that targets older JavaScript engines.

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#!/bin/sh
# don't forget chmod +x .git/hooks/pre-commit

STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep ".jsx\{0,1\}$")
ESLINT="$(git rev-parse --show-toplevel)/node_modules/.bin/eslint"

if [[ "$STAGED_FILES" = "" ]]; then
  exit 0
fi

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{
  "short_name": "My App // Should be <= 12 characters. Appears on the home screen once installed ",
  "name": "My App // Must be <= 45 characters. Appears in places with more space (install dialogs, etc.)",
  "icons": [{
    "src": "images/splashIcon.png // Android: Requires a PNG at least 512x512 for your startup screen. This is used along with your app name (above) and background color (below) to generate a splash screen. Learn more: https://developers.google.com/web/fundamentals/web-app-manifest/#add_a_splash_screen",
    "sizes": "512x512",
    "type": "image/png"
  }, {
    "src": "images/appIcon.png // Android requires a PNG at least 192x192 for your home screen icon",
    "sizes": "192x192",