Aa, kind of. Look: 
my $uids = [ 5674, 1, 4 ];
my $msgs = [ $msg1, $msg4, $msg5674 ];

[download]
Provided $msgNN->uid == NN we'd like to have [ $msg5674, $msg1, $msg4 ].

In reply to Re^2: Ordering objects using external index by kappa
in thread Ordering objects using external index by kappa

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