When to use classes?

[Toby Dickenson]

danielt3 at gte.net (Daniel T.) wrote:

>For the above, your best bet would be something like:
>
>x,y = poly.firstPointX(), poly.firstPointY()
>
>or
>
>x,y = poly.firstPoint() # assumes that firstPoint( self ) returns a tuple
>
>or
>
>aPoint = poly.firstPoint()  # assumes that firstPoint( self ) returns a Point
>                            # class object

That second method does not require a tuple - any sequence object will
do. If you have a point class that implements the sequence protocol
then you can use both conventions.

This is probably the best pure-python option unless you have millions
of these objects, or you will be accessing them millions of times.



Toby Dickenson
tdickenson at geminidataloggers.com