Re: How come undef eq '' ??

Not to get into a discussion on what perl should do but:

perl -e 'if( $tmp eq 0 ) { print "In\n" } else { print "Out\n" }'
Out
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By the same logic - I cant seem to understand why this is not true! Especially considering undef $a; $a++ works as expected.

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Re^2: How come undef eq '' ?? by muba (Priest) on Jan 30, 2013 at 15:55 UTC
Because `eq` is for string comparisons. undef stringifies to "", 0 stringifies to "0", and `"" ne "0"`. Change `eq` to `==` and it will print "In".	[reply] [d/l] [select]
Re^2: How come undef eq '' ?? by Corion (Patriarch) on Jan 30, 2013 at 15:53 UTC
`eq` is for string comparison. `++` is a numeric operator. Maybe that's where the root of the preceived discrepancy lies?	[reply] [d/l] [select]
Re^2: How come undef eq '' ?? by tmharish (Friar) on Jan 30, 2013 at 16:53 UTC
Corion, muba ... Yup, with the 0 I should have used `==` and it would have been consistent with `eq` and `''`. Thanks!	[reply] [d/l] [select]