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

Luke Palmer wrote:

On Thu, May 15, 2008 at 8:45 PM, Andrew Coppin 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 = (:[])

Ah. So f :: [x] -> [[x]]. Devious...