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[Caml-list] Why is (@) written in O'Caml?
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Date: -- (:)
From: Oleg <oleg_inconnu@m...>
Subject: [Caml-list] Why is (@) written in O'Caml?
let rec (@) l1 l2 =
  match l1 with
    [] -> l2
  | hd :: tl -> hd :: (tl @ l2)

The O'Caml implementation of (@) is recursive and not tail-recursive. All one 
really has to do during "append" is copy l1 and set the last element's CDR to 
l2. I can see why this can not be done in O'Caml itself, but since (@) is 
such a common operation, I'm wondering why it was decided to implement it 
inefficently in O'Caml itself?

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