I don't know if it helps, but have you tried simply to make the following?: 
use MyLib1;
use MyLib2;

<my code here>

no MyLib1;

<my code here>

no MyLib2;

<more code here>

[download]
Regards, turo
perl -Te 'print map { chr((ord)-((10,20,2,7)[$i++])) } split //,"turo"'

In reply to Re: undef a Module by turo
in thread undef a Module by jai_dgl

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