ricattierger

Why do you say that? Certain things in a language may increase binary size or something else but at the end of the day these languages all go through most likely the same compiler and should produce a roughly equivalent binary.

Same. Focusing on wellness this year and it is great. Have read so much more after forcing less screen time

I think that is a good point at the end. Pure may be defined in regards to the language. So allocating memory in C may make a function unpure but something other languages may still be pure.

So it seems that you are sort of talking about a function that is memoizable but not pure. Pure has no mutation of any global state. So hypothetically touching the heap means not pure - if somehow others can see it.