If you want to ensure that your relationship is one-to-one, then you could check at run-time like this: 
my %reverse = reverse %hash;
die "Useful message" unless scalar keys %reverse == scalar keys %hash;

[download]

--
use JAPH;
print JAPH::asString();

In reply to Re: One to one relationship by wol
in thread One to one relationship by Dirk80

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