# frozen_string_literal: true module Gem # The Gem::List class is currently unused and will be removed in the next major rubygems version class List # :nodoc: include Enumerable attr_accessor :value, :tail def initialize(value = nil, tail = nil) @value = value @tail = tail end def each n = self while n yield n.value n = n.tail end end def to_a super.reverse end def prepend(value) List.new value, self end def pretty_print(q) # :nodoc: q.pp to_a end def self.prepend(list, value) return List.new(value) unless list List.new value, list end end deprecate_constant :List end