Would an app be rejected or frowned upon …
This is most definitely not supported. For a fixed
SystemSoundIDvalue to be considered API, it must have a symbolic constant in the headers. Passing in other fixed values is not OK.
Also, see this thread.
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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"