koyanloshe

const CHUNK_SIZE = 10000000; // 10MB
async function start() {
    const stream = fs.createReadStream('./file', { highWaterMark: CHUNK_SIZE });
    for await(const data of stream) {
       // do something with data 
    }
}
start();

koyanloshe

const CHUNK_SIZE = 10000000; // 10MB
const data = fs.readFileSync('./file');
for(let bytesRead = 0; bytesRead < data.length; bytesRead = bytesRead + CHUNK_SIZE) {
 // do something with data 
}

koyanloshe

function bytesToSize (bytes) {
    if (bytes === 0) return '0 B';

    var k = 1024;
    var sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
    var i = Math.floor(Math.log(bytes) / Math.log(k))
    return (bytes / Math.pow(k, i)).toPrecision(3) + ' ' + sizes[i]
}

koyanloshe

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

1. brew doctor
2. brew update

koyanloshe

const trace = label => value => {
  	console.log(`{$label} : {$value}`);
	return value;
}

koyanloshe

const fs = require('fs')

const rootDir = require('../utils/rootDir')

const env = {
  // accepts a filename and if no filename, it defaults to .env
  config: filename => {
    filename === undefined ? (filename = '.env') : filename

    fs.readFileSync(`${rootDir}/${filename}`, 'utf-8')

koyanloshe

// Async compose
const compose = (…functions) => input => functions.reduceRight((chain, func) => chain.then(func), Promise.resolve(input));

// Functions fn1, fn2, fn3 can be standard synchronous functions or return a Promise
compose(fn3, fn2, fn1)(input).then(result => console.log(`Do with the ${result} as you please`))

koyanloshe

// Object.assign has an issue with nested Objects. This prevents that leakage

const cloneObj = (existingObj) => {
  return JSON.parse(JSON.stringify(existingObj))
}

koyanloshe

" Basic settings
set nocompatible                      " behave like vim, not old vi
set modelines=0                       " don't use modelines
set viminfo='20,\"50                  " use a viminfo file,...
set history=50                        " and limit history
set ruler                             " show the cursor position
set title                             " show title on the window
set autoread                          " reload file if changed outside vim
set autowrite                         " save file on some commands
set scrolloff=1                       " minimal no. of lines around cursor

koyanloshe

var http = require('http');
var fs = require('fs');
var path = require('path');

http.createServer(function (request, response) {
    console.log('request ', request.url);

    var filePath = '.' + request.url;
    if (filePath == './') {
        filePath = './index.html';