]> I wonder why optionnal argument are implemented through the option type instead of giving a defauklt value ? Obviously the type should carry the default value which should be a closed constant (like None, 0, 0.0, [1;2;3], etc ...) but this would preserve the possibility of using optionnal arguments and unboxed int or float arguments and it will save the None/Some test ! -- Christophe Raffalli Université de Savoie Batiment Le Chablais, bureau 21 73376 Le Bourget-du-Lac Cedex tél: (33) 4 79 75 81 03 fax: (33) 4 79 75 87 42 mail: Christophe.Raffalli@univ-savoie.fr www: http://www.lama.univ-savoie.fr/~RAFFALLI --------------------------------------------- IMPORTANT: this mail is signed using PGP/MIME At least Enigmail/Mozilla, mutt or evolution can check this signature ---------------------------------------------