Traits, rôles and other repurposed terms
david at cantrell.org.uk
Fri Feb 8 12:28:21 GMT 2008
On Thu, Feb 07, 2008 at 02:06:16PM -0600, Jonathan Rockway wrote:
> ... You can make your classes that do "equals" inherit from a
> superclass which implements "not_equals". ... [That] is a misuse of
To me, that just shows that "isa" should be pronounced "inherits from"
or "is derived from". Or even, perish the thought, "extends" like in
Pronouncing it as "is a" works well when you're explaining OO to
newbies in terms of how physical objects like stools and chairs
"inherit" some of their characteristics from the superclass of "seats"
and others from, eg, "things made of wood", but thinking of classes
solely in terms of physical objects breaks down eventually.
David Cantrell | Official London Perl Mongers Bad Influence
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