Daniel Bünzli wrote:
> 
> Le 26 oct. 08 à 01:08, Martin Jambon a écrit :
> 
>> In performance-critical code or maybe imperative code in general, it
>> feels good to control when closures are created. In such cases, avoiding
>> local functions helps.
> 
> Just to be clear, naming your anonymous function locally (which is what
> is recommended) or not naming it doesn't make any performance difference
> AFAIK.

What I mean is that:


let f x y = x + y

let g x l =
  List.map (f x) l


is clearer than:


let g x l =
  let f y = x + y in
  List.map f l


in the sense that it is obvious that a closure is created in the first
case, while it is less visible in the second case.



Martin

-- 
http://mjambon.com/