There's something quite basic about how scheme works that eludes me.
Please let me know if it would be more appropriate to post this somewhere
eles.
This program works as I expect:
(let loop ((a 0))
(if (> a 3)
(print "it's over")
(begin (print a)
(loop (+ 1 a)))))
If add an extra set of parentheses around the begin clause:
(let loop ((a 0))
(if (> a 3)
(print "it's over")
(begin ((print a)
(loop (+ 1 a))))))
I get the following (from DrRacket 5.3.1) :
0123"it's over". . application: not a procedure;
expected a procedure that can be applied to arguments
given: #<void>
arguments...:
#<void>
I don't understand how adding the extra parentheses caused the change in
behavior.
Thanks,
Jan Erik
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