JoelQ

# all outputs should be the same

puts __dir__
puts File.expand_path(__dir__)
puts File.expand_path File.dirname(__FILE__)
puts File.expand_path("../", __FILE__)

JoelQ

puts "__dir__ is the same as File.expand_path(__dir__)"
puts __dir__ == File.expand_path(__dir__)

puts "__dir__ is the same as File.expand_path( File.dirname(__FILE__) )"
puts __dir__ == File.expand_path( File.dirname(__FILE__) )

puts "__dir__ is the same as File.expand_path('../', __FILE__)"
puts __dir__ == File.expand_path("../", __FILE__)

# Script Output:

JoelQ

# Show branch in status line
PS1='[\w]$ '

#PS1="\u$ \w: "
alias ll="ls -lahG"
alias subl='open -a "Sublime Text 2"'

# Git bash completion
if [ -f `brew --prefix`/etc/bash_completion ]; then
    . `brew --prefix`/etc/bash_completion

JoelQ

  def convert_to_media(link)
    if URI.split(link)[5].end_with? 'png', 'gif', 'jpeg'
      "<img src=\"#{link}\" />"
    elsif URI.split(link)[2].include?("youtube") && URI.split(link)[7] && URI.split(link)[7].include?('v=')
      video_id = URI.split(link)[7][2..-1]
      "<iframe width=\"560\" height=\"315\" src=\"http://www.youtube.com/embed/#{video_id}\" frameborder=\"0\" allowfullscreen></iframe>"
    elsif URI.split(link)[2].include? "youtu.be"
      video_id = URI.split(link)[5].gsub('/', '')
      "<iframe width=\"560\" height=\"315\" src=\"http://www.youtube.com/embed/#{video_id}\" frameborder=\"0\" allowfullscreen></iframe>"
    else

JoelQ

require 'uri'

class MediaParser

  def initialize(text)
    @text = text
    @links = URI.extract @text
  end

  def parse_links

JoelQ

require 'uri'

class MediaParser

  def initialize(text)
    @text = text
    @links = URI.extract @text
  end

  def parse_links

JoelQ

require 'uri'

class MediaParser

  def initialize(text)
    @text = text
    @links = URI.extract @text
  end

  def parse_links

JoelQ

require 'uri'

class MediaParser

  def initialize(text)
    @text = text
    @links = URI.extract @text
  end

  def parse_links

JoelQ

Ruby docs for Array#uniq

From the docs:

uniq → new_ary uniq { |item| ... } → new_ary Returns a new array by removing duplicate values in self.

If a block is given, it will use the return value of the block for comparison. It compares values using their hash and eql? methods for efficiency.

JoelQ

What is Elm

Pure Functions

What does that mean?

• For a given input, you always get the same output
• The output cannot depend on any external factors (e.g. File on disk, some external variable)