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
}