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The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

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.

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arnaud-zg

node: Platform built on V8 to build network applications
git: Distributed revision control system
wget: Internet file retriever
yarn: JavaScript package manager
python3: Interpreted, interactive, object-oriented programming language
python: Interpreted, interactive, object-oriented programming language
mysql: Open source relational database management system
coreutils: GNU File, Shell, and Text utilities
openssl: SSL/TLS cryptography library
postgresql: Object-relational database system

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// hell
function hell() {
  step1(a => {
    step2(b => {
      return a + b
    })
  }) 
}

// heaven

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Introduction

Card payments with Stripe should be performed with PaymentIntents.

This API was created to handle modern payments, where the cardholder's bank may require the user to authenticate themselves with the bank before a payment can be authorized.

Authentication requirements first started to appear with European banks regulated by PSD2 which introduced [Strong Customer Authentication

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import { AsyncStorage } from 'react-native'
import { setGenericPassword, getGenericPassword, resetGenericPassword } from 'react-native-keychain'

export default {
  async getAllKeys (callback) {
    try {
      const keys = await AsyncStorage.getAllKeys()
      if (callback) {
        callback(null, keys)
      }

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# Official framework image. Look for the different tagged releases at:
# https://hub.docker.com/r/library/node/tags/
image: node:6

before_script:
  - npm install

# This folder is cached between builds
# http://docs.gitlab.com/ce/ci/yaml/README.html#cache
cache: