Fred L. Drake, Jr. wrote:
> As an (admittedly trivial) example, I'd be quite happy for:
>
> class Color [valuemap]:
> red = rgb(255, 0, 0)
> blue = rgb(0, 255, 0)
> green = rgb(0, 0, 255)
Ooh, what about this:
def singleton(klass):
return klass()
class MyThing [singleton]:
...
That would be splendid IMHO.
However, since MyThing instances aren't necessarily callable, I think my
code breaks the rule Aahz is proposing. The 'singleton' decorator has
to come last in the decorator list. Also note that the 'singleton'
function is not a decorator in the design pattern sense, since the
output (an instance) does not implement the same interface as the input
(a class).
Shane
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