On Thu, 20 Jan 2005 [EMAIL PROTECTED] wrote:
DT::Set count() currently returns "undef" on error, and "0" for empty sets.
Should it return "zero-but-true" (0e0) for empty sets?
No, this is just confusing. What do you mean by "on error"? Do you mean when a set is possibly infinite, and therefore uncountable? In thise case undef is right, because the value truly is unknown.
If it's an actual input error, it should throw an exception.
-dave
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