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discard """
output: '''1231
4
6
8
--------
4
6
8
'''
"""
iterator count1_3: int =
yield 1
yield 2
yield 3
for x in count1_3():
write(stdout, $x)
# yield inside an iterator, but not in a loop:
iterator iter1(a: openArray[int]): int =
yield a[0]
var x = [[1, 2, 3], [4, 5, 6]]
for y in iter1(x[0]): write(stdout, $y)
writeLine(stdout, "")
# ensure closure and inline iterators have the same behaviour wrt
# parameter passing
iterator clo(a: int): int {.closure.} =
yield 0+a
yield 1+a
yield 2+a
iterator inl(a: int): int {.inline.} =
yield 0+a
yield 1+a
yield 2+a
proc main =
var y = 4
for i in clo(y):
echo i
inc y
echo "--------"
y = 4
for i in inl(y):
echo i
inc y
main()
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