Re: guile style

[jerry]

On 6/19/21 7:20 AM, Christopher Lam wrote:
> Agree set! is not a desirable form. It is not consistently optimisable. 
> I cannot find the reference in the manual.
>
> Also consider the first form: you're building a list in 3 passes -- call 
> iota to generate a list, call filter to navigate the list again, then 
> fold to accumulate your answer. Therefore it's O(3N).
>
> The preferred form is definitely from the little schemer.
Haskell has something called stream fusion which can optimize the extra
passes out in many cases. I wonder if Guile or any of the other scheme
compilers can do that? As someone who has spent the majority of my life
writing high performance C and Fortran code, the inefficiencies in a lot
of functional programming is something I don't care for. On the other
hand, writing functional code is fun.