On 2021-05-28 at 12:22:22 +1000,
Chris Angelico <ros...@gmail.com> wrote:
> [...] calculate something once and reuse the value, because you know
> that it won't change (or don't care if it changes) [...]
> (Some day I'll learn how to do this in real life. Why can't I buy just
> one egg, and then reuse the same egg for every meal?)
Those are mutable eggs. Try immutable eggs instead.
Or obtain a hen, aka an egg factory (and a rooster, too, but that's off
topic, even for Python Ideas).
ObPython:
>>> egg = Egg()
>>> egg.scramble()
>>> egg.fry()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
EggStateError: cannot fry a scrambled egg
Mutability is the root of all evil.
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