How to silence a warning in swift

Question

I have a piece of code which is generating lots of warnings (deprecated API)

Using clang* I could do

#pragma clang diagnostic push
#pragma clang dia         


        

Answer 1

There is no general construct to silence deprecation warnings in Swift, but there is a workaround that can be applied in many cases.

Let's say you have a method getLatestImage() on class Foo which uses deprecated methods/classes.

Use @available as Daniel Thorpe described to silence all the warnings inside the method:

@available(iOS, deprecated: 9.0)
func getLatestImage() -> UIImage? {
    ...
}

Now you would like to call the method getLatestImage() without having a deprecation warning. You can achieve that by first defining a protocol and an extension:

private protocol GetLatestImage {
    func getLatestImage() -> UIImage?
}
extension Foo: GetLatestImage {}

And then call the method without a deprecation warning (if foo is an instance of Foo):

(foo as GetLatestImage).getLatestImage() // no deprecation warning

The result is you have Swift code that uses deprecated API without any deprecation warnings.