- Learn to Program by Chris Pine
- The Well-Grounded Rubyist by David Black
- Eloquent Ruby by Russ Olsen
- Practical Object-Oriented Design in Ruby by Sandi Metz
- Confident Ruby by Avdi Grimm
I hereby claim:
To claim this, I am signing this object:
When inserting objects into collections or passing as parameters to methods, most are passed as reference,
Fixnum are passed as value.
!to methods that will change the parameters.
class Tuner def initialize (presets) @presets = presets clean