Ruby/Class/Object in Ruby

Материал из Wiki.crossplatform.ru

abs absolute value method

puts -1.abs

All strings in Ruby are objects of the String class, as you can discover by calling a string"s class method

puts "Hello, world!".class

Everything is an object or object-oriented in Ruby.

# the expression 1.+ is simply calling the + method of the 1 object
puts 1.+(2)

Get the modules Object class belongs to

p Object.included_modules # => [Kernel]