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var global := 0
func test():
var a = 0
var b = 1
match a:
0 when b == 0:
print("does not run" if true else "")
0 when b == 1:
print("guards work")
_:
print("does not run")
match a:
var a_bind when b == 0:
prints("a is", a_bind, "and b is 0")
var a_bind when b == 1:
prints("a is", a_bind, "and b is 1")
_:
print("does not run")
match a:
var a_bind when a_bind < 0:
print("a is less than zero")
var a_bind when a_bind == 0:
print("a is equal to zero")
_:
print("a is more than zero")
match [1, 2, 3]:
[1, 2, var element] when element == 0:
print("does not run")
[1, 2, var element] when element == 3:
print("3rd element is 3")
match a:
_ when b == 0:
print("does not run")
_ when b == 1:
print("works with wildcard too.")
_:
print("does not run")
match a:
0, 1 when b == 0:
print("does not run")
0, 1 when b == 1:
print("guard with multiple patterns")
_:
print("does not run")
match a:
0 when b == 0:
print("does not run")
0:
print("regular pattern after guard mismatch")
match a:
1 when side_effect():
print("should not run the side effect call")
0 when side_effect():
print("will run the side effect call, but not this")
_:
Utils.check(global == 1)
print("side effect only ran once")
func side_effect():
print("side effect")
global += 1
return false
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