if( 0 == @_ ) {
        &$sub();
    } elsif( 1 == @_ ) {
        &$sub( $_[0][0] );
    } elsif( 2 == @_ ) {
        &$sub( $_[0][0], $_[1][0] );
    } elsif( 3 == @_ ) {
        &$sub( $_[0][0], $_[1][0], $_[2][0] );
    # etc to some arbitrary maximum number of arguments
    }

[download]
and that lead me to realize that I could get what I want using eval:     eval "&\$sub( " . join( ", ", map "\$_[$_][0]", 0..$#_ ) . " )"
You could do (untested, and probably some experimentation needed to find a good cutoff point): 
if ($#_ <= 255) {
    my $lim = $#_;
    &$sub(($_[0][0],$_[1][0],$_[2][0],$_[3][0],$_[4][0],
           $_[5][0],$_[6][0],$_[7][0],$_[8][0],$_[9][0],
           ...
           $_[255]
          )[0..$lim]);
    $#_ = $lim # remove autovivified arrayrefs
} else {
    eval "&\$sub( " . join( ", ", map "\$_[$_][0]", 0..$#_ ) . " )";
}

[download]

In reply to Re: Getting a list of aliases to selected items from a list of array references by ysth
in thread Getting a list of aliases to selected items from a list of array references by tye

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