jmont

// Swift Monads -- Maybe
// Juan C. Montemayor (@norsemelon)

// This operator can be used to chain Optional types like so:
// optionalVal >>= f1 >>= f2
// where f1 and f2 have type `Any -> Any?`
//
// If a value is ever nil, the chain short-circuits and will result in nil.
// This is a much neater way to do this than using the if syntax specified in
// the Swift iBook.

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

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.

---

paf31

This blog post series has moved here.

You might also be interested in the 2016 version.

chriseidhof

import Foundation

class Box<T> {
    let unbox: T
    init(_ value: T) { self.unbox = value }
}

struct Notification<A> {
    let name: String
}

fxg42

defmodule Optional do
  def unit(nil), do: {:err, nil}
  def unit(value), do: {:ok, value}

  def lift(func) do
    fn input -> unit(func.(input)) end
  end

  def bind({:ok, optional}, functor), do: functor.(optional)
  def bind(err, _), do: err

nicolashery

import React from 'react';
import _ from 'lodash';
import Rx from 'rx';
import superagent from 'superagent';

let api = {
  host: 'http//localhost:3001',

  getData(query, cb) {
    superagent

henrik

Deploying Phoenix on Dokku

Worked 2015-09-08 for Phoenix 1.0.1 on Dokku 0.3.25.

These instructions assume you've set up Dokku. If not, go find a tutorial for that part. My notes for setting it up on Digital Ocean.

On your local machine, in the app's repo

Create a Dokku app:

swlaschin

(*
ParserLibrary_v1.fsx

Version 1 of the code for a parser library.

Related blog post: http://fsharpforfunandprofit.com/posts/understanding-parser-combinators/

*)

open System

syafiqfaiz

1. Change your database RDS instance security group to allow your machine to access it.
   • Add your ip to the security group to acces the instance via Postgres.
2. Make a copy of the database using pg_dump
   • $ pg_dump -h <public dns> -U <my username> -f <name of dump file .sql> <name of my database>
   • you will be asked for postgressql password.
   • a dump file(.sql) will be created
3. Restore that dump file to your local database.
   • but you might need to drop the database and create it first
   • $ psql -U <postgresql username> -d <database name> -f <dump file that you want to restore>

• the database is restored

ahmadshah

defmodule Randomizer do
  @moduledoc """
  Random string generator module.
  """
  
  @doc """
  Generate random string based on the given legth. It is also possible to generate certain type of randomise string using the options below:

  * :all - generate alphanumeric random string
  * :alpha - generate nom-numeric random string