3 ms·
Holy shit, I’ve been writing python for 15 years and it’s the first time I’ve seen None used as an identity function. That’s nuts! How does it work under the ho
by chaos_emergent 2y ago
Holy shit, I’ve been writing python for 15 years and it’s the first time I’ve seen None used as an identity function. That’s nuts! How does it work under the hood? Does filter have a special case for evaluating None?
- echoangle 2y agoYes, that’s just a special case. You can’t call None as a function. https://docs.python.org/3/library/functions.html#filter https://docs.python.org/3/library/functions.html#filter > If function is None, the identity function is assumed, that is, all elements of iterable that are false are removed.