Structなクラスをハッシュでnew

gistfile1.rb

class Lens < Struct.new(:name, :mm, :f, :close_up, :generation)
  
  def initialize(attrs)
    super(*self.class.members.inject([]) {|r, x| r << attrs[x] })
  end
end

Lens.new(
  f: 2,
  generation: '3rd',
  name: 'Summicron',
  mm: 50,
  close_up: false
)