TIL - Use Struct over OpenStruct for performance

openstruct.rb

2.7.2 :001 > params_1 = { x: 10, y: 15 }
 => {:x=>10, :y=>15} 
2.7.2 :002 > params_2 = { x: 10, y: 15, z: 25 }
 => {:x=>10, :y=>15, :z=>25} 
2.7.2 :003 > require "ostruct"
 => true 
2.7.2 :004 > OpenStruct.new params_1
 => #<OpenStruct x=10, y=15> 
2.7.2 :005 > OpenStruct.new params_2
 => #<OpenStruct x=10, y=15, z=25> 

struct.rb

2.7.2 :001 > params_1 = { x: 10, y: 15 }
 => {:x=>10, :y=>15} 
2.7.2 :002 > params_2 = { x: 10, y: 15, z: 25 }
 => {:x=>10, :y=>15, :z=>25} 
2.7.2 :003 > Person = Struct.new(:x, :y, keyword_init: true)
 => Person(keyword_init: true) 
2.7.2 :004 > Person.new params_1
 => #<struct Person x=10, y=15> 
2.7.2 :005 > Person.new params_2
Traceback (most recent call last):
        6: from /home/amit/.rvm/rubies/ruby-2.7.2/bin/irb:23:in `<main>'
        5: from /home/amit/.rvm/rubies/ruby-2.7.2/bin/irb:23:in `load'
        4: from /home/amit/.rvm/rubies/ruby-2.7.2/lib/ruby/gems/2.7.0/gems/irb-1.2.6/exe/irb:11:in `<top (required)>'
        3: from (irb):6
        2: from (irb):6:in `new'
        1: from (irb):6:in `initialize'
ArgumentError (unknown keywords: z)