Version française
Home     About     Download     Resources     Contact us    
Browse thread
[Caml-list] On the equality of functional values
[ Home ] [ Index: by date | by threads ]
[ Search: ]

[ Message by date: previous | next ] [ Message in thread: previous | next ] [ Thread: previous | next ]
Date: -- (:)
From: Alessandro Baretta <alex@b...>
Subject: [Caml-list] On the equality of functional values
I have been experimenting with equal signs, and I noticed 
that the equality operator (=) behaves in a strange way with 
respect to functional values.

         Objective Caml version 3.06

# (=) = (=) ;;
Exception: Invalid_argument "equal: functional value".
# let x = (=) in x = x ;;
- : bool = true

The first line seems to imply that no comparisons are 
possible between functional values. However, the second line 
I typed does not raise the same exception. This seems to 
imply that comparisons are allowed between functional 
values, too.

Now, which of two hypotheses is correct?

Alex

-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners