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There is a difference. For example, DBI's do() returns the number of rows affected -- but some statements succeed even though no rows were affected. This allows for the following bit of code to be sane:
Having a query affect zero rows is perfectly valid, and doesn't necessarily mean an error. This makes even more sense when other methods in the same program return '0' as the false value rather than undef: it allows for programmer choice and a consistent read.
Larry Wall is Yoda: there is no try{}
The Code that can be seen is not the true Code In reply to Re^2: The best "true zero" is...
by radiantmatrix
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