[Haskell-cafe] Numerics and Warnings

[Aleksey Khudyakov]

On 10 April 2013 23:26, Tom Ellis
<tom-lists-haskell-cafe-2013 at jaguarpaw.co.uk> wrote:
> On Wed, Apr 10, 2013 at 11:20:15PM +0400, Aleksey Khudyakov wrote:
>> This IS rather annoying problem for numeric code. Raising value to positive
>> power is quite common operation yet ^ operator generally couldn't be used
>> because it leads to warning about type defaulting (rightfully) and one
>> wants to keep code warning free. Actually it's problem with warnings and
>> I don't think adding some ad-hoc rules for generating warning is necessarily
>> bad idea
>
> Like I demonstrated in my reply to Barak, there is a way around this which
> does not require adding ad-hoc complexity to the compiler.
>
Last time I checked (~2 years ago) GHC generated not very efficient code for ^.
But otherwise it's useable solution