ktec

#!/usr/bin/env bash
# Original Source: http://blog.nonuby.com/blog/2012/07/05/copying-env-vars-from-one-heroku-app-to-another/

## Usage: heroku_env_copy [options] SOURCE TARGET
##
## NOTE: This script will only output the command, you should run it yourself.
##
## Options:
##   -h, --help    Display this message.
##

ktec

defmodule MasterProxy.Application do
  @moduledoc """
  Custom Cowboy specification to support hosting multiple Phoenix apps within the same umbrella, 
  all served via the same port. This is only really necessary if you're deploying your umbrella 
  to a restricted hosting environment like Heroku where they only expose 1 port per dyno.
  
  Don't for get to configure your endpoints, something like this should work:
  
  config :myapp_web, MyAppWeb.Endpoint,
    url: [scheme: "https", host: "myapp.herokuapp.com", port: 443],

ktec

Controlling the screen brightness on a Macbook Pro running linux is harder than it should be. 

For ...reasons the bundled `xbacklight` doesn't work, so we're left with no option but to roll 
up our sleaves and get our hands dirty. Fortunately various bash commands and `bc` makes this
task pretty trivial so here is a script to control the brightness.

This script supports the following api:

$ brightness -set 10
$ brightness -set +10

ktec

import React, { Component } from "react";
import { connect } from "react-redux";

import MessageList from "../components/MessageList";
import MessageInput from "../components/MessageInput";
import Actions from "../actions";

function App(props) {
  const { messages, sendMessage } = props;
  return (

ktec

Install entr:

https://github.com/clibs/entr

Add this to .bashrc

elixir_test() {
  if [[ $# -eq 0 ]] ; then
 find . -name '*.ex' -o \

ktec

Controlling the keyboard led lights on a Macbook Pro running linux is harder than it should be. 

For ...reasons the bundled `kbdlight` doesn't work, so we're left with no option but to roll 
up our sleaves and get our hands dirty. Fortunately various bash commands and `bc` makes this
task pretty trivial so here is a script to control the brightness.

This script supports the following api:

$ kbdlight -set 10
$ kbdlight -set +10

ktec

defmodule PyramidCalculator do

  @doc """
  iex> PyramidCalculator.pyramid_prices_percents([1, 2, 3], 10)
  [10.0, 33.33333333333333, 56.666666666666664]
  iex> PyramidCalculator.pyramid_prices_percents([1, 2, 3], 40)
  [40.0, 33.333333333333336, 26.666666666666668]
  iex> PyramidCalculator.pyramid_prices_percents([1, 3, 7, 22], 5)
  [5.0, 10.517241379310345, 21.551724137931036, 62.93103448275862]
  """

ktec

// const Box = x =>
// ({
//   map: f => Box(f(x)),
//   fold: f => f(x),
//   inspect: () => `Box(${x})`
// })


const fmap = f => xs => xs.map(x => f(x))

ktec

# 1) Create your private key (any password will do, we remove it below)

$ cd ~/.ssh
$ openssl genrsa -des3 -out server.orig.key 2048


# 2) Remove the password

$ openssl rsa -in server.orig.key -out server.key

ktec

class Prime
  def self.primes
    isComposite = -> (n) {(3..Math.sqrt(n)).step(2).any?{ |i| n % i == 0 }}
    Enumerator.new do |e|
      e.yield 2                           # start at 2
      (3..Float::INFINITY)                # start generator from 3
        .step(2)                          # sieve all even numbers
        .lazy                             # calculate on demand
        .reject(&isComposite)             # sieve all composites numbers
        .map(&:to_i)                      # reduce to ints