javierisassi

 Profile Answers by javierisassi 

• Jun 25th, 2009

 

It is a method that alters the attribute of an object.

myabcs = ['a', 'b', 'c']
#myabcs is of type Array.

myabcs.reverse!
# this method altered the object.

p myabcs

#outputs:
#["c", "b", "a"]

For this to work the method must return a reference of itself and not a fixed value