switch x, y, z {
    case true: ...
        # any are true
    case false, _: ...
        # x == false
    case _, null, true: ...
        # y == null or z == true
    case xor _, true, true: ...
        # y == true xor z == true
}

switch 0 {
    case x, y: ...
        # x or y equals 0
    ...
}

switch[and] x, y, z {
    case true: ...
        # all are true
    case false, _: ...
        # x == false
    case _, null, true: ...
        # y == null and z == true
}