Re^2: filehandle in warning not what I expected...

[spstansbury]

Thanks for the input - you're right, it's inefficient, I will follow Corian's advice and read the file into a hash.

But what really confused me is that the warning referenced the interface file and not the actual data file that the undef field was parsed from...

[spstansbury]

Or it's simply showing the last filehandle that I read from...

[JavaFan]

Right. Perl isn't tagging any values with the source it came from; let alone undefined values. In fact, if it came from a file, it has to be defined.