Read undef and compare it with defined and also perlsyn.

Also, why are you posting the same node to me and to moritz (in Re^3: How to get cell format of xls)? Do you have reason to doubt the validity of my reply? Or reason to doubt the validity of moritz' reply?

In reply to Re^4: How to get cell format of xls by Corion
in thread How to get cell format of xls by bimleshsharma

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