I found the strange behavior related to iterator. In the following code,
iterator "greater" iterates over all integer greater than a and less than 10.
Then, put this iterator to an object S. Now, call these iterators two times.
First one ("test by iterator") works well. But second one("test by iterator
member") woks only first iteration. The output would be
test by iterator
3 4 5 6 7 8 9
6 7 8 9
test by iterator member
3 4 5 6 7 8 9
Run
Is it a bug?
type S = object
greater:iterator(a:int):int
iterator greater(a:int):int {.closure.} =
for i in a + 1 ..< 10:yield i
var s = S(greater:greater)
# works well
echo "test by iterator"
for i in greater(2): stdout.write i, " "
echo ""
for i in greater(5): stdout.write i, " "
echo ""
# not work second for loop
echo "test by iterator member"
for i in s.greater(2): stdout.write i, " "
echo ""
for i in s.greater(5): stdout.write i, " "
echo ""
Run
