I used it in Karel to implement WHILE and REPEAT (basically, if the loop should continue, the step that evaluated the condition is directly followed by the step that runs the first command in the loop body).

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: Weird syntax. What does this goto statement do? ( 'goto &NAME' use cases) by choroba
in thread Weird syntax. What does this goto statement do? by harangzsolt33

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