Talk:Pure functions

It would be really nice to have it. Just small note: why should factorial be recursive? It is easily implemented as a cycle, and thus can be pure.

It does not say it has to be recursive, it's just used as an example in the context of "Remembering Pre-calculated Values".(In fact a lookup table with entries [0..20] will suffice, since Fac(21) > High(QWord).) --Bart (talk) 22:34, 22 December 2021 (CET)