Re^4: hash question

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Re^5: hash question by ikegami (Patriarch) on Nov 21, 2004 at 21:41 UTC
Then you have problems with your input, cause I tested my update before submitting it. `%a = ( A => 1, ); print 'A' if not exists $a{'A'}; # prints nothing print 'B' if not exists $a{'B'}; # prints B` [download] Try `use warnings;` to see if you're trying to print undef, and like pg suggested, make sure the // actually matched. You could also give us a sample of IN and IN2 which doesn't provide the expected output.	[reply] [d/l] [select]

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Re^5: hash question
by ikegami (Patriarch) on Nov 21, 2004 at 21:41 UTC

%a = (
  A => 1,
);

print 'A' if not exists $a{'A'};  # prints nothing
print 'B' if not exists $a{'B'};  # prints B
[download]

Try use warnings; to see if you're trying to print undef, and like pg suggested, make sure the // actually matched. You could also give us a sample of IN and IN2 which doesn't provide the expected output.

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