1: #!/usr/bin/env ruby
2:
3: class Dog
4: def talk() puts "Woof" end
5: end
6:
7: class Cat
8: def talk() puts "Meow" end
9: end
10:
11: animals = { 'dog'=>Dog, 'cat'=>Cat }
12:
13: print "What kind of pet do you want? "
14: pet_name = gets
15: pet = animals[pet_name.chomp].new
16: pet.talk
|
| Output
$ ruby src/metaclass.rb
What kind of pet do you want? dog
Woof
$
$ ruby src/metaclass.rb
What kind of pet do you want? cat
Meow
|
|