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object Test {
@dotty.annotation.inline
def swap[T](x: T, x_= : T => Unit, y: T, y_= : T => Unit) = {
val t = x
x_=(y)
y_=(t)
}
def main(args: Array[String]) = {
var x = 1
var y = 2
@dotty.annotation.inline def setX(z: Int) = x = z
@dotty.annotation.inline def setY(z: Int) = y = z
swap[Int](x, setX, y, setY)
assert(x == 2 && y == 1)
}
}
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