The error is at the top of your code:

my %Cls = {'P','a','N','b','U','c'};

You need to assign a list, not a hash reference to your hash:

my %Cls = ('P','a','N','b','U','c');

[download]

In reply to Re: Hash problem: each() failure by Corion
in thread Hash problem: each() failure by Anonymous Monk

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