freeze does nothing since Fixnums are already immutable. : Constants « Language Basics « Ruby






freeze does nothing since Fixnums are already immutable.


HOURS_PER_DAY = 24
HOURS_PER_DAY.freeze # This does nothing since Fixnums are already immutable.

HOURS_PER_DAY = 26
# warning: already initialized constant HOURS_PER_DAY
HOURS_PER_DAY                            # => 26

 








Related examples in the same category

1.Constants in Ruby start with an uppercase letter
2.Ruby allows you to change the values in constants by assigning a new value to them:
3.Change the value of Pi, it'll let you do it, but you'll get a warning:
4.The Scope of Constants
5.Constants are defined within the scope of the current class and are made available to all child classes, unless they're overridden:
6.Array constant