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While a variable is a string and if it has neither been assigned a value nor numified its value will be '', I am not sure on this but I think '' or undef or 0 can be interchanging depending on the context that the null variable scalar is used under (i.e when a scalar which's null is numified its value becomes 0).

Isn't this behaviour mainly hiding ugly bugs?
This behavior seems consistent and indeed in/of use, for instance, consider when quickly wanting to start a counter:

C:\Documents and Settings>perl - print "$hash{count} \n"; print -$hash{count},"\n"; print --$hash{count},"\n"; print ++$hash{count},"\n"; __END__ 0 -1 0 C:\Documents and Settings>

Update: did s/' '/''/, thanks Jenda for noticing the unintended typo as '' and ' ' are not the same thing. Added technical corrections too..



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In reply to Re: Numification of strings by biohisham
in thread Numification of strings by LanX

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