getter and setter through method_missing to manipulate a hash inside a ruby class #ruby

method_missing_test.rb

class Test
  def initialize
    @hash = {prop1: 'prop 1 value', prop2: 'prop2 value'}
  end
 
  def method_missing(m, *args)
    #setter
    if /^(\w+)=$/ =~ m 
      @hash[:"#{$1}"] = args[0]
    end
    #getter
    @hash[:"#{m}"]
  end
end
 
t = Test.new
p t.prop1
p t.prop2
p t.prop3
t.prop3 = 'prop3 value'
p t.prop3
t.prop3 = 'prop3 new value'
p t.prop3
 
#result: 
#"prop1 value"
#"prop2 value"
#nil
#"prop3 value"
#"prop3 new value"

Thank you for this! Useful.