--
On Thu, 16 May 2002 12:36:42
Miko O'Sullivan wrote:
>SUMMARY
>
>Arrays should always have known lengths because that's what arrays do. This
>requirement is enforced culturally, not programmatically.
I totally agree that this should be enforced culturally. I think that the way a tied
array (or hash, for that matter) should handle this in this way:
sub LENGTH { #Possible implicit sub for determining length
return undef but true; #or would this be is?
}
As Larry (I think) approximately said module and class authors should not use undef
for false - it should mean undef. This seems pretty clear to me. "We have a length
here, yes, but we don't know what it is yet. It's undefined".
-Erik
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