[Haskell-beginners] Average of numeric list

[David Virebayre]

2011/4/4 Daniel Fischer <daniel.is.fischer at googlemail.com>

>
> Note however, that that's not a particularly efficient way to calculate the
> mean, since the compiler isn't smart enough to transform it into a loop
> traversing the list once (so allowing it to be garbage collected as it is
> consumed and the computation to run in constant space) and keeping the
> accumulators evaluated.
>

I've always wondered, is it imaginable that a compiler would be able to do
such transforms (assuming very intelligent people (i.e. not me)  have plenty
of time to work on it), or is it way too complicated ?

David.
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