overridding without subclassing examples
tapplek at gmail.com
Wed Sep 19 00:17:41 UTC 2007
On Tue, Sep 18, 2007 at 03:14:15PM -0700, Brad Fuller wrote:
> Is there a way to override an instance method w/o subclassing?
> For instance, class Morph has a method that returns true, but I want the that
> method to return false when instancing some types of Morphs and others not.
> (there is no setter/getter for this method.) Is there a way to do that w/o
> adding a setter/getter to Morph or subclassing the different Morphs?
Your question is pretty vague
I imagine you see something like
in class morph, but you want some (or all?) morphs to instead
^ self isSomethingWeirdHappening not
First you can redefine the method in the appropriate class(es). If you
want to put this change in a MC package, move it to category
and this method will be stored in the package, and will override
the existing method when loaded.
Package-level overrides are not recommended, but they are available
Matthew Fulmer -- http://mtfulmer.wordpress.com/
Help improve Squeak Documentation: http://wiki.squeak.org/squeak/808
More information about the Squeak-dev