Efficient Wrappers for Instance Methods
Random832
random832 at fastmail.com
Thu Feb 4 13:35:32 EST 2016
On Thu, Feb 4, 2016, at 11:18, Sven R. Kunze wrote:
> On 04.02.2016 00:47, Random832 wrote:
> > On Wed, Feb 3, 2016, at 16:43, Sven R. Kunze wrote:
> >> Actually a nice idea if there were no overhead of creating methods for
> >> all heap instances separately. I'll keep that in mind. :)
> > What about changing the class of the object to one which is inherited
> > from its original class and has the method you want? What about reaching
> > into the class and changing the method in the first place? Either may
> > not be appropriate, of course, depending on your use case.
>
> There is no base class.
I meant something like...
Class C:
replace = heapreplace
Cs = {}
...
if not isinstance(x, C)
T = type(x)
cls = cache.get(T)
if cls is None:
cls = type('C_'+T.__name__, (C, T), {})
x.__class__ = cls
(Of course, by dynamically reassigning __class__ and using the type
constructor, this checks two of the three "crazy type system voodoo"
boxes. I have no idea if it will work, or if I've made a mistake, or if
you'll be able to understand it in six months.)
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