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#!/bin/bash
# Required deps:
# imagemagick: https://imagemagick.org/script/download.php
# iconutil: https://developer.apple.com/library/archive/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/Optimizing/Optimizing.html

# name of your master icon, should be 1024x1024 or .svg
if [ -z "$PNG_MASTER" ]; then
    # If not set, assign a default value
    PNG_MASTER="icon-large.png"
fi

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Deploy a Phoenix app with Dokku

Pre-requisits

1. Setup Dokku instance on Digital Ocean
2. Config Phoenix App For Dokku Deploy

Step 1 - Create app

$ ssh <mydomain.com>
$ dokku apps:create 

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Reconfigure

If your project has any issues with the native folders, you can rebuild them by deleting both the ios and android directories at the root level of your project and running this command:

$ react-native eject

Running this command will check if the ios and android directories exist and then rebuild whichever one is missing.

The first time you run this command it will spit out a configuration JSON file called app.json. By default, app.json will have 2 properties:

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defmodule User do
  use Ecto.Model
  
  schema "users" do
    field :email, :string
    field :hashed_password, :string
    field :password, :string, virtual: true
    field :password_confirmation, virtual: true
    
    timestamps

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How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

• Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

• Use production SSL certificates locally. This is annoying

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The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

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$(function() {
    var source = new EventSource('/events');
    source.onopen = function (event) {
        console.log("eventsource connection open");
    };
    source.onerror = function() {
        if (event.target.readyState === 0) {
            console.log("reconnecting to eventsource");
        } else {
            console.log("eventsource error");

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#!/usr/bin/env bash
apt-get -y update
apt-get -y install build-essential zlib1g-dev libssl-dev libreadline-gplv2-dev libyaml-dev
cd /tmp
wget ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p392.tar.bz2
tar -xvjf ruby-1.9.3-p392.tar.bz2
cd ruby-1.9.3-p392/
./configure --prefix=/usr/local
make
make install