Why is the splat used inside an array definition here?

Question

def initialize(apps, catch=404)
  @apps = []; @has_app = {}
  apps.each { |app| add app }

  @catch = {}
  [*catch].each { |status| @catch[status] = true }
end
         


        

Answer 1

Another way to look at it: an l-value splat is greedy and contains as many corresponding r-values as possible.