Note that you need 5.22 for this to work. See Assignment to list repetition in Perl 5.22 delta. See also ()x= in Syntax::Construct.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^4: Avoiding repeated undefs by choroba
in thread [Solved] Avoiding repeated undefs by davies

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