Thanks for the exhaustive answer.
Andrew
On Wed, Feb 13, 2013 at 2:57 PM, Alp Mestanogullari alpmes...@gmail.comwrote:
If a difference appears, I believe
http://blog.johantibell.com/2010/09/static-argument-transformation.htmlwould
be involved. Also, the second map function could be inlined
Hello,
Is there any difference in efficiency between these two functions, when
compiled with all optimizations?
map f [] = []
map f (a:as) = f a : map f as
and
map f x = map' x where
map' [] = []
map' (a:as) = f a : map' as
Thanks,
Andrew
___
If a difference appears, I believe
http://blog.johantibell.com/2010/09/static-argument-transformation.htmlwould
be involved. Also, the second map function could be inlined by GHC,
avoiding calling f through a pointer because at the call site, we know
what 'f' is (this is also mentionned in the
On 2/13/13 3:55 AM, Andrew Polonsky wrote:
Hello,
Is there any difference in efficiency between these two functions, when
compiled with all optimizations?
map f [] = []
map f (a:as) = f a : map f as
and
map f x = map' x where
map' [] = []
map' (a:as) = f a : map' as
As Alp says,
