I recognise this as a set problem. 
Set::Scalar->new(qw(11 14))->intersection(
    Set::Scalar->new(qw(4 5 6 7 8 9 10 11 12))
)->members
# 11

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You might also be interested in Perl6::Junction/Quantum::Superpositions.

In reply to Re: smartmatch with multiple search values by daxim
in thread smartmatch with multiple search values by toohoo

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