macro
boot.janet on line 412 , column 1
(label name & body )
Set a label point that is lexically scoped. `name` should be a
symbol that will be bound to the label.
(label result
(each x [0 1 2 3 ]
(when ( x 3 )
(print "reached the end" ))
(when ( x 2 )
(return result 8 ))))
# => 8