bmaupin

See also:

• Free backend hosting
• https://free-for.dev/#/?id=dbaas

Service	Type	Storage	Limitations
Amazon DynamoDB	⚠️ Proprietary NoSQL	25 GB	⚠️ Payment method required
Amazon RDS	⚠️ Proprietary RDBMS		⚠️ Only free for 1 year
Azure SQL Database	MS SQL Server		⚠️ Only free for 1 year
👉 Clever Cloud	PostgreSQL, MySQL, MongoDB, Redis	256 MB (PostgreSQL)	Max 5 connections (PostgreSQL)

gaearon

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

• We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
• We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

joshuachinemezu

import React, { Component } from 'react'
import { Redirect } from 'react-router'

export default class ContactForm extends Component {
  constructor () {
    super();
    this.state = {
      fireRedirect: false
    }
  }

Geoyi

How to install virtualenv:

Install pip first

sudo apt-get install python3-pip

Then install virtualenv using pip3

sudo pip3 install virtualenv 

alien3d

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Image
} from 'react-native';
import { StackNavigator,TabNavigator,TabBarBottom,TabBarTop } from "react-navigation";
import Icon from 'react-native-vector-icons/FontAwesome';

dipakcg

<?php
  /***** EDIT BELOW LINES *****/
  $DB_Server = "localhost"; // MySQL Server
  $DB_Username = "username"; // MySQL Username
  $DB_Password = "password"; // MySQL Password
  $DB_DBName = "databasename"; // MySQL Database Name
  $DB_TBLName = "tablename"; // MySQL Table Name
  $xls_filename = 'export_'.date('Y-m-d').'.xls'; // Define Excel (.xls) file name
   
  /***** DO NOT EDIT BELOW LINES *****/

juampynr

<?php

require 'vendor/autoload.php';

use GuzzleHttp\Client;

$client = new Client([
  'base_uri' => 'http://example.com',
]);

andrey-skl

To run on ios:

1. Install XCode (recommended) or XCode command line tools by xcode-select --install
2. Into XCode settings, go to "Downloads" tab and download iOS 9.2 emulator
3. Compile native app and run it on simulator via npm run ios

To run on Android:

1. Set up Android environment
2. Create emulator via npm run android-emulator-create
3. Run emulator via npm run android-emulator
4. Compile native code and run it on emulator via npm run android

marty-wang

Disclaimer: The instructions are the collective efforts from a few places online. 
Nothing here is my original. But I want to put them together in one place to save people from spending the same time as I did.

First off, bundle.
==================

1. cd to the project directory
2. Start the react-native packager if not started
3. Download the bundle to the asset folder:
curl "http://localhost:8081/index.android.bundle?platform=android" -o "android/app/src/main/assets/index.android.bundle"

m0n01d

JavaScript

JavaScript Basics

• Javascript fundamentals 7- hours
• Udacity Javascript Basics
• NodeSchool.io - Javascripting

Intermediate JavaScript

• The JavaScript Triology by Douglas Crockford
• Udacity Object-Oriented JavaScript
• Crockford on JavaScript