How can I make a method similar to Array() in Ruby (no dot syntax)?

Question

In Ruby, you can use Array() to wrap an element in an empty array if it wasn't already an array:

Array(2) => [2]
Array([2, 3]) => [2, 3]

How would I define a method like on my own custom class? Like Foo() ? I'm having a hard time searching for it on the internet because I don't know exactly what's going on here.

Answer 1

Array() is the private method defined in Kernel module. So if you want your custom Foo() method that works in similar way, you could do:

module Kernel

  private

  def Foo(*args)
    # code
  end
end

You could also define this method in Object class, since Kernel is mixed-in to Object , there would be no difference.