cggaurav

// original gist
const shuffleArray = arr => arr.sort(() => Math.random() - 0.5);

// fully random by @BetonMAN
const shuffleArray = arr => arr
  .map(a => [Math.random(), a])
  .sort((a, b) => a[0] - b[0])
  .map(a => a[1]);

shuffleArray([1, 2, 3]) //[3, 1, 2]

cggaurav

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

cggaurav

/* =========================================
      IMPORTS
-------------------------------------- */

const fs = require('fs')
const { promisify } = require('util')

sleep = promisify(setTimeout)

cggaurav

/* =============================================
        Dependencies
------------------------------------------ */

const debug = require('debug')
const { Readable, Writable, Transform } = require('stream')

const JSONStream = require('JSONStream')

cggaurav

#!/usr/bin/env ruby

# A quick script to download all your files from CloudApp.
# To run this just run the script passing your e-mail & password
# to the script, for example:
#
#    gem install cloudapp_api
#    ruby cloudapp-export.rb adam@atechmedia.com mypassword
#

cggaurav

By the way, I'm available for tutoring and code review :)

Table of contents

1. What Promises library should I use?
2. How do I create a Promise myself?
3. How do I use new Promise?
4. How do I resolve a Promise?
5. But what if I want to resolve a synchronous result or error?
6. [But what if it's at the start of a chain, and I'm not in a .then callback yet?](https://gist.github.com/joepie91/4c3a10629a4263a522e3bc4839a28c83#6-but

cggaurav

$ wget \
     --recursive \
     --no-clobber \
     --page-requisites \
     --html-extension \
     --convert-links \
     --restrict-file-names=windows \
     --domains website.org \
     --no-parent \
         www.website.org/tutorials/html/

cggaurav

#
# Initialize the stuff
#
# We build the status bar item menu

framework 'AppKit'
def setupMenu
  menu = NSMenu.new
  menu.initWithTitle 'Flipsicle'
  mi = NSMenuItem.new

cggaurav

# Name: EXIFmover.py
# Author: Brian Klug (@nerdtalker / brian@brianklug.org)

# Purpose:
# Move Files into directory based on EXIF data make and model
# Designed to un-clusterfuck the Dropbox camera upload directory which is a mess of every
# JPEG and PNG ever if you use it like I do on a bunch of phones, and thus totally unwieldy
# and full of images sorted by date or else nothing sometimes, dropbox seems nondeterminstic

# Moves files into /[Image Make]+[Image Model]/ eg /Camera Uploads/LGE Nexus 4/

cggaurav

app = angular.module 'BlogExample', []

# Simple controller that loads all blog posts
app.controller 'BlogCtrl', ['$scope', 'Blog', ($scope, Blog) ->
  # Get all the blog posts
  Blog.all().then (posts) ->
    $scope.posts = posts
    
  # Extend the $scope with our own properties, all in one big block
  # I like this because it looks like declaring a class.