ABSTRACT

The Integer class contains the #succ method returning (self + 1). I feel that it would be good to have the symetric method #pred too.

PROBLEM

A user knowing about Integer#succ might want to use Integer#pred.

Add the Integer#pred method that shall return (self – 1).

This change should be trivial and does not present any problem with backwards compatibility.

class Integer

def pred

self - 1

end

end