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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"
1. Keep it simple
2. Just remember to pull out 3 in the morning
3. A good puzzle will wake me up
Many. I like to torture myself
0. Socks just get in the way
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