example you give works, but I didn't understand difference between threads->list( threads::joinable ) and is_joinable yet 

 while( threads->list ) {
        for my $joinable ( threads->list( threads::joinable ) ) {
            $joinable->join;
        }
    }

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In reply to Re^2: is_joinable question by anaconda_wly
in thread is_joinable question by anaconda_wly

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