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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Time-a-function/Janet/time-a-function.janet Normal file
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(defmacro time
"Print the time it takes to evaluate body to stderr.\n
Evaluates to body."
[body]
(with-syms [$start $val]
~(let [,$start (os/clock)
,$val ,body]
(eprint (- (os/clock) ,$start))
,$val)))
(time (os/sleep 0.5))