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My code is
CPL> (top-level
(pursue
(format t "First~%")
(format t "Third~%")
(format t "Second~%"))
)
First
Third
Second
NIL
CPL>
Why answer is not just 'First'?
Because cram tutorials doc says : 'Only the first form is executed. The other forms are evaporated.'
Thank you~
Your code is slightly different from that one of the tutorial. The tutorial says:
(top-level
(pursue
(format t "First~%")
(seq
(sleep 2)
(format t "Third~%"))
(seq
(sleep 1)
(format t "Second~%"))))
Please note the sleeps. What happens in your case is that all three forms terminate very quickly and pursue doesn't have a chance to evaporate any of the tasks. With the sleeps, you force Third and Second to take long enough to be evaporated.
Asked: 2011-09-16 03:00:41 -0600
Seen: 195 times
Last updated: Sep 16 '11
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