Chapter 8. Passing Arguments and Returning Values
In this chapter, you’ll be looking at many of the effects (and side effects) of passing arguments and returning values to and from methods. First, though, I’ll take a moment to summarize the types of methods you’ve used up to now.
Summarizing Instance, Class, and Singleton Methods
An instance method is declared inside a class definition and is intended for use by a specific object or “instance” of the class, like this:
methods.rb
class MyClass # declare instance method def instanceMethod puts( "This is an instance method" ) end end # create object ob = MyClass.new # use instance method ob.instanceMethod ...
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