On Tue, Jul 31, 2001 at 11:10:50PM +0300, Moshe Zadka wrote: > On Tue, 31 Jul 2001, Guido van Rossum <guido@zope.com> wrote: > > Actually, this may not be as big a deal as I thought before. The PVM > > doesn't have a lot of knowledge about types built into its instruction > > set. It knows a bit about classes, lists, dicts, but not e.g. about > > ints and strings. The opcodes are mostly very abstract: BINARY_ADD etc. > PUSH "1" > PUSH "2" > BINARY_ADD > In Python that gives "12". In Perl that gives 3. > Unless you suggest a PERL_BINARY_ADD and a PYTHON_BINARY_ADD, I > don't see how you can around these things. The Perl version of the compiled code could of course be PUSH "1" COERCE_INT PUSH "2" COERCE_INT BINARY_ADD for Perl's "1" + "2" and PUSH "1" PUSH "2" BINARY_ADD for it's "1" . "2" (or, in the case of variables instead of literals, an explicit 'COERCE_STRING' or whatever.) -- Thomas Wouters <thomas@xs4all.net> Hi! I'm a .signature virus! copy me into your .signature file to help me spread!
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