Don't get me wrong. I don't consider undef to be the same as zero (eventhough it could be treated as such in a numeric context) nor do i wish to see the behaviour of List::Util::sum() changed, I'm fine with it the way it is., infact I like it the way it is and don't want to see it changed.

I'm just questioning whether sum() was initially relased the way it is after all the possible exceptions were examined. Did Graham Barr initially oversee the empty list exception? If not why? If not why wasn't it fixed? I cannot definitely state whether the current behaviour is intended or not, I don't think anyone can, except Graham Barr himself. And if Graham decided to keep sum() the way it is, does he consider the sum of an empty list to be 0 or undef??

perl -e '$,=$",$_=(split/\W/,$^X)[y[eval]]]+--$_],print+just,another,split,hack'er

In reply to Re^11: List::Util::sum() and empty lists... (obvious) by Firefly258
in thread List::Util::sum() and empty lists... by blazar

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