induced() returns a list flattened from an array. my $qw=induced(@{ $subgraphs[$d-1] }); evaluates that return value in scalar context. If you want to return a scalar, you should join the elements of the array. If you want to return a list, you need to capture it as an array or something which provides list context.

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In reply to Re: Problem printing return value from a subroutine by chromatic
in thread Problem printing return value from a subroutine by zing

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