Howdy from a Ruby newbie–hope my question isn’t too annoying.
I’m working through a book on Ruby. Examples using self work fine in
irb, but if I type the same examples in a script and run that I get this
error message: private method called for…NoMethodError.
So, my question is: what do I need to type to properly invoke self in a
script (but that is not needed in the irb?).
I should mention that the explanation of public vs. private methods
isn’t helping me. If I could just see what I have to actually type to
use self in a script vs. the irb a light would go off in my head.
Here’s an example that runs in irb, but not in a script:
self + n
The irb will display the result 4, but the script gives the “private
I’m puzzled as to why Ullman does not address this in his section on