func asExpectedThisFuncHasWarningsOnEveryLine() {
    1.0 + 2.0
    1.0 - 2.0
    1.0 * 2.0
    1.0 / 2.0
    1.0 % 2.0
    1.0 == 2.0
    1.0 != 2.0
    1.0 < 2.0
    1.0 > 2.0
    1.0 <= 2.0
    1.0 >= 2.0
}
func butSurprisinglyThisFuncHasNoWarningsAtAll() {
    // Missing @warn_unused_result for these Int operators:
    1 + 2
    1 - 2
    1 * 2
    1 / 2
    1 % 2
    1 == 2
    1 != 2
    1 < 2
    1 > 2
    1 <= 2
    1 >= 2
    1 << 2
    1 >> 2
    1 & 2
    1 | 2
    1 ^ 2
    // And it's the same for UInt, UInt8-64 and Int8-64.
    // And also for these:
    class C : NonObjectiveCBase {}; var c = C(); var oc: C? = C()
    typealias MBP = ManagedBufferPointer<Void, Void>
    isUniquelyReferenced(&c)
    isUniquelyReferencedNonObjC(&c)
    isUniquelyReferencedNonObjC(&oc)
    MBP(unsafeBufferObject: c) == MBP(unsafeBufferObject: c)
    zip([1, 2, 3], ["one", "two", "three"])
}

func perhapsConfusing() {
    let s =
    "Since this function compiles fine. One might "
    "think that string literals in Swift can be "
    "written like this. But that is not the case. "
    "Only the first string literal will be printed."
    "The rest (including eg this) will be silently "
    "ignored."
    12.34 // As will this.
    print(s) // Will print: "Since this function compiles fine. One might "
}