Rutyl

Rutyl is a simple gem gathering all my ruby utilities tools.

I do not like ruby map behaviour that return nil by default

(0..5).map  { |e| e if e > 2 } => [nil, nil, nil, 3, 4, 5]

cmap simply does the same but add a compact to the array so that it gets ride of nil value

(0..5).cmap { |e| e if e > 2 } => [3, 4, 5]

Instance variables from binding is inspired from another project I cannot remind of (but I will be looking for it) It is an attempt to provide scala syntax for instance variable. Ruby behaves like that :

Class Car       
  def initialize(color, speed)
    @color = color
    @speed = speed
  end
end

This behaviour is not DRY at all. Let's DRY it :

Class Car  
  include Rutyl
 
  def initialize(color, speed)
    ivars_from binding
  end
end

You can simply do :

Car.new("green", 10) => <Car @color="green", @speed=10>