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Comment by Alifatisk | Hacker News Reader

I recently discovered a cool trick for runtime type validation using pattern matching, it goes like this

class Person attr_accessor :name, :age

  def initialize(name:, age:)
    name => ::String
    age => ::Numeric

    @name = name
    @age = age
  end

end

Ruby should likely strive to this:

  def initialize(name => ::String, age => ::Numeric)
    @name = name
    @age = age
  end

or better yet?

  def initialize(name => String, age => Numeric)
    @name = name
    @age = age
  end

I've been out of Ruby for a while so I don't understand by why the top level qualifiers are necessary.