In this post I note down some of the Ruby’s tricks and magics which confuses me easily.

Splat Operator

In method definition, the splat operator * does two things opposite of each other.

When used with parameter, it constructures arbitrary number of arguments into an array; while used with argument, it destructures the array into arguments.

class Test
  def self.perform(*args)
    new(*args).perform
  end

  def initialize(x, y, z)
    ...
  end
end

Test.perform(1, 2, 3)

Reference: Ruby splat operator 🌟