Re:Anti-Patterns in Python Programming
by dalke on Thursday July 10, 2014 @12:28PM
(#8015535)
I think by your use of "just memoize" that I didn't explain myself well enough. I don't mean to focus on the slow aspect, nor even the function aspect. It could be
def foo(default_arg = [0]*(256*256)):
...
and still get the same namespace issues.
Memoization is not always going to be an available solution. For example, it may be that slow_f() returns a stateless object, so can be reused, while slow_f(x) returns something stateful. You can think of my examples as either using default arguments as a single element memo, or using a module variable for the same. Both premised on the idea that the developer knows enough to make the right decision.
Memoization is not always going to be an available solution. For example, it may be that slow_f() returns a stateless object, so can be reused, while slow_f(x) returns something stateful. You can think of my examples as either using default arguments as a single element memo, or using a module variable for the same. Both premised on the idea that the developer knows enough to make the right decision.