Re^3: Argument "" Isn't numeric in numeric eq (==)

I do not understand the question. I just populated the @f array as in the OP. I just used

while (<DATA>) {
    my @f = (undef, split /,/);
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as the @f in the OP is not zero based, but one based. There is no need to cast between strings and numbers in Perl.

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Comment on Re^3: Argument "" Isn't numeric in numeric eq (==) Download Code

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Re^4: Argument "" Isn't numeric in numeric eq (==) by karlgoethebier (Abbot) on Feb 09, 2014 at 19:36 UTC
"There is no need to cast..." Yes s(h)ure. I was a bit confused about this Isn't numeric in numeric eq (==). Sorry, i couldn't explain it better :-( Best regards, Karl «The Crux of the Biscuit is the Apostrophe»	[reply]
Re^5: Argument "" Isn't numeric in numeric eq (==) by choroba (Cardinal) on Feb 09, 2014 at 20:06 UTC
The empty strings were the reason of the warning. They are handled by the `\|\| 0`, because emtpy string is false. لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ	[reply] [d/l]