1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
discard """
targets: "c cpp js"
"""
template main =
block: # proc equality
var prc: proc(): int {.closure.}
prc = nil
doAssert prc == nil
doAssert prc.isNil
prc = proc(): int =
result = 123
doAssert prc != nil
doAssert not prc.isNil
doAssert prc == prc
let prc2 = prc
doAssert prc == prc2
doAssert prc2 != nil
doAssert not prc2.isNil
doAssert not prc.isNil
prc = proc(): int =
result = 456
doAssert prc != nil
doAssert not prc.isNil
doAssert prc != prc2
block: # iterator equality
when nimvm: discard # vm does not support closure iterators
else:
when not defined(js): # js also does not support closure iterators
var iter: iterator(): int {.closure.}
iter = nil
doAssert iter == nil
doAssert iter.isNil
iter = iterator(): int =
yield 123
doAssert iter != nil
doAssert not iter.isNil
doAssert iter == iter
let iter2 = iter
doAssert iter == iter2
doAssert iter2 != nil
doAssert not iter2.isNil
doAssert not iter.isNil
iter = iterator(): int =
yield 456
doAssert iter != nil
doAssert not iter.isNil
doAssert iter != iter2
static: main()
main()
|
