in reply to sub return value in qq{}
References (and dereferences) should work:
print qq{ monk magic ${ \b() } };
You can also use an array reference, which is great if you need more than one thing:
print qq{ monk magic @{ [b(), b()] } };
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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Seekers of Perl Wisdom