4.2 Stephen's Class Notes

Accessors

• Accessors: create getters and setters for instance variables
• attr_reader —> creates getter
• attr_writer —> creates setter
• attr_accessor —> creates both getter & setter

Variables

• local —> lives within the space it is declared in
• $global —> can be accessed from anywhere
• @instance —> can be accessed by all methods in INSTANCE of that class
• @@class —> can be accessed by class & all instances of that class

Methods

• Class methods (can only be called on class)

def self.method_name
end

• Instance methods (can only be called on instance of class)

def method_name
end
def initialize(arguments)
end

(populates new instance with whatever info you set here)