in reply to Join and Concatenation

it's b/c concat has higher operator precedence, using B::Deparse reveals it

  DB<234> dp $cols  = '[' . join '],[',@array . ']';
{
    ($cols = ('[' . join('],[', (@array . ']'))));
}

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Cheers Rolf

( addicted to the Perl Programming Language)

In Section Seekers of Perl Wisdom