> Interestingly, only one of these lines gives a warning:

because the second one returns an empty list, which is a legal use of print.

C:\WINDOWS\system32>Perl -MData::Dump=pp -e "pp do{3 if ()} "
undef

C:\WINDOWS\system32>Perl -MData::Dump=pp -e "pp do{()} "
()

[download]

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

In reply to Re^5: printing unitialized value of the 'do BLOCK' by LanX
in thread printing unitialized value of the 'do BLOCK' by rsFalse

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