Ruby Keyword Arguments

Upcase
1

Keyword arguments allow us to write code that is both more expressive, and more flexible. Tune in as Ian and Chris dive into some of the more subtle aspects and demonstrate how we can use keyword args to produce clear, reliable code.

This is a companion discussion topic for the original entry at https://thoughtbot.com/upcase/videos/ruby-keyword-arguments
2

14:21 "We basically use keyword arguments EVERYWHERE…

Okay, do you think these are money on class parameters? Seems like it is much more manageable to do an args hash and then bust defaults off into their own method. Might be just selling myself since this is what I am used to.

class Foo

  def initialize(args={})
    args = defaults.merge(args) 
    @bar = args[:bar]
    @baz = args[:baz]
  end

 def meaning_of_life
  puts '42'
 end

  private

  def defaults(args)
    {bar: 'bar', baz: 'baz'}
  end
end

vs

class Foo

  def initialize(bar: 'bar', baz: 'baz')
    @bar = bar
    @baz = baz
  end

 def meaning_of_life
  puts '42'
 end
end

Bloody Hell, never mind. I’m, sold too.

1 Like
3

:grinning: lol @khundawg.

I love how we don’t have to order them. Thanks for the tutorial!