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Restricting a scalar to certain values

by Anonymous Monk
on Jun 20, 2013 at 07:54 UTC ( [id://1039912]=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    tie my $state, 'Scalar::Restrict', qw/ idle waiting active /;
# or maybe
lock_scalar my $state, qw/ idle waiting active /;

# $state may now only be "idle", "waiting", or "active"

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