[Haskell-cafe] Two-iteration optimisation (was: GHC Predictability)

[Luke Palmer]

On Thu, May 15, 2008 at 8:45 PM, Andrew Coppin
<andrewcoppin at btinternet.com> wrote:
> Yitzchak Gale wrote:
>>
>>
>> And of course, you wouldn't want that:
>>
>> f xs = xs : map expensiveCalculation xs
>>
>> Please don't fuse those two loops into one.
>>
>
> ...doesn't type check. Did you mean (++)?

Hmm?  While the name might be misleading...

expensiveCalculation = (:[])

Luke