attr

[AbyssalLord]

Could someone please explain the attr_accessor, reader, etc.?  Thanks.

 

[khmp]

They act as markers that create an expanded method:

attr_accessor will create a method to read and write a variable.
attr_writer will create a method to only write a variable.
attr_reader will create a method to only read a variable.

attr_accessor :sweet

Will get interpreted as:

def sweet=(sweet)
  @sweet = sweet
end

def sweet
  return @sweet
end

attr_writer :sweet

Will get interpreted as:

def sweet=(sweet)
  @sweet = sweet
end

attr_reader :sweet

Will get interpreted as:

def sweet
  return @sweet
end

They are basically time savers rather than having to create accessor methods for every instance variable of a class you would want to access.

Good luck with it AbyssalLord! :thumb:

 

[AbyssalLord]

Thanks!