* Filename.chop_suffix
@ 1998-05-08 20:52 David Delahaye
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From: David Delahaye @ 1998-05-08 20:52 UTC (permalink / raw)
To: caml-list
Bonsoir,
Je suis tombe, par hasard, sur une phrase du manuel d'ocaml en ligne qui
m'a un peu interpelle (dans Filename):
> val chop_suffix : string -> string -> string
>
> chop_suffix name suff removes the suffix suff from the filename name. The
> behavior is undefined if name does not end with the suffix suff.
Cela ressemble fortement a un trou semantique. Pourquoi ne pas lever tout
simplement une exception qui caracteriserait entierement le comportement de
cette fonction?
Amicalement.
David.
===============================================================================
David Delahaye <Email>: David.Delahaye@inria.fr
<Laboratory>: The Coq Project <Domain>: Proofs
<Adress>: INRIA-Rocquencourt Domaine de Voluceau BP105 78153 Le Chesnay Cedex
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<Tel>: (33)-(0)1 39 63 57 53
<Fax>: (33)-(0)1 39 63 56 84
<Url>: http://pauillac.inria.fr/~delahaye
===============================================================================
[If you have time to waste, you can have a look on my proof that all the real
number are positive. Given x in R:
x^2>=0 (well-known result)
(x^2)^(1/2)>=(0)^(1/2) (use of power on each member)
x^(2*1/2)>=0 (use of the propertie: (x^n)^m=x^(n*m)
x^1>=0 (very easy simplification)
x>=0 (great!)]
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1998-05-08 20:52 Filename.chop_suffix David Delahaye
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