It is indeed a label. last OP will jump to the } of the block labeled OP.

                OP: {
                    $r &= $v <  $cv, last OP if $co eq '<';
                    $r &= $v <= $cv, last OP if $co eq '<=';
                    $r &= $v != $cv, last OP if $co eq '!=';
                    $r &= $v >= $cv, last OP if $co eq '>=';
                    $r &= $v >  $cv, last OP if $co eq '>';
                    $r &= $v == $cv;
                }

[download]

is the same as

                if    ($co eq '<' ) { $r &= $v <  $cv; }
                elsif ($co eq '<=') { $r &= $v <= $cv; }
                elsif ($co eq '!=') { $r &= $v != $cv; }
                elsif ($co eq '>=') { $r &= $v >= $cv; }
                elsif ($co eq '>' ) { $r &= $v >  $cv; }
                else                { $r &= $v == $cv; }

[download]

In reply to Re: What does 'last OP;' do? by ikegami
in thread What does 'last OP;' do? by Danwifi

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