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The old use of defined @arr is deprecated, cause the logic was broken.

For me undefined means "not initialized" (yet), like with  my $a. But this state doesn't exist for array and hashes, they are initialized empty.

And if it existed it would be different from (defined and) empty.

Nevertheless undef @a is allowed, adding even more confusion:

DB<153> @a => (1, 2, 3, 4, 5, 6) DB<154> undef @a => undef DB<155> \@a => []

Cheers Rolf

( addicted to the Perl Programming Language)


In reply to Re^3: Conditional array initialisation? by LanX
in thread Conditional array initialisation? by BrowserUk

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