[SOLVED]Calling a method from another class

Ruby
1

I’m learning about method calling and object oriented programming in
Ruby. The book I’m reading gives an example about calling a method.

I have two methods:

a mainMethod and DOG class.

My mainMethod reads as follows:

require_relative ‘dog’
class MAINMETHOD
DOG.bark
end

My DOG class reads as follows:

class DOG
def bark
puts “woof”
end
end

Whenever I try to run mainMethod, I get “undefined method `bark’ for
DOG:Class (NoMethodError)”

Am I doing something wrong? Please help :confused:

2

Figured it out, can’t believe I didn’t think of it earlier-- I
dishonored my Java knowledge.

I completely forgot to call dog:

dogCaller = DOG.new
dogCaller.bark

Got caught up with learning Ruby and forgot my older principles.

3

the way bark is defined it is an instance method
you need to create an instance of the DOG class to call it:
DOG.new.bark

or you change the definition of bark to be a class method:
def self.bark
…

which then can be called using the class

have a look at

more details

4

Please don’t UPCASE all your classes man … :stuck_out_tongue: