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var fs       = require('fs');
var Promise  = require('promise');
var promises = [];
var readline = require('readline');

var readFile = function (file) {
    return new Promise(function (resolve, reject) {
        var lines = [];
        var rl    = readline.createInterface({
            input: fs.createReadStream('./logs/' + file)

ktpm489

How to set up web3.js with CRNA

This is a simple guide to get you started with using the Ethereum Javascript API (web3.js) with the Create React Native App project. This is not an in-depth guide.

TL;DR

If you are lazy and just want to get started, I have this project ready for you. It should work out-of-the-box.

Installation guide

1. Make sure you have Node version 6 or later installed, if not, get it on the Node website

ktpm489

const waitFor = (ms) => new Promise(r => setTimeout(r, ms))
const asyncForEach = (array, callback) => {
  for (let index = 0; index < array.length; index++) {
    await callback(array[index], index, array)
  }
}

const start = async () => {
  await asyncForEach([1, 2, 3], async (num) => {
    await waitFor(50)

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var a = ["sdfdf", "http://oooooolol"],
    handleNetErr = function(e) { return e };

Promise.all(fetch('sdfdsf').catch(handleNetErr), fetch('http://invalidurl').catch(handleNetErr))
    .then(function(sdf, invalid) {
        console.log(sdf, invalid) // [Response, TypeError]
    })
    .catch(function(err) {
        console.log(err);
    })

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Install MongoDB with Homebrew

brew install mongodb
mkdir -p /data/db

Set permissions for the data directory

Ensure that user account running mongod has correct permissions for the directory:

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var AWS = require('aws-sdk');

AWS.config.update({
  accessKeyId: '{AWS_KEY}',
  secretAccessKey: '{AWS_SECRET}',
  region: '{SNS_REGION}'
});

var sns = new AWS.SNS();

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/*
Made by [egy.js](https://www.instagram.com/egy.js/);
*/

see it on :

https://you-link.herokuapp.com/?url=https://www.youtube.com/watch?v=YGCLs9Bt_KY

https://you-link.herokuapp.com/?url=https://www.youtube.com/watch?v=[ID]

Or

http://josemicoronil.hol.es/youtube_get_video_url.php?url=https://www.youtube.com/watch?v=YGCLs9Bt_KY

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const delay = ms => new Promise(resolve => setTimeout(resolve, ms));

async function something() {
    console.log("this might take some time....");
    await delay(5000);
    console.log("done!")
}

something();

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Git cheat list

• specifying revisions: http://schacon.github.io/git/git-rev-parse.html#_specifying_revisions

• view a diff of 2 files in 2 different commits:

  git diff <HASH-1>:<PATH-A> <HASH-2>:<PATH-B>
  

• show file at certain revision:

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_hashCode                               java/lang/Object.hashCode()I
_getClass                               java/lang/Object.getClass()Ljava/lang/Class;
_clone                                  java/lang/Object.clone()Ljava/lang/Object;
_dabs                                   java/lang/Math.abs(D)D
_dsin                                   java/lang/Math.sin(D)D
_dcos                                   java/lang/Math.cos(D)D
_dtan                                   java/lang/Math.tan(D)D
_datan2                                 java/lang/Math.atan2(DD)D
_dsqrt                                  java/lang/Math.sqrt(D)D
_dlog                                   java/lang/Math.log(D)D