A common annoyance with using Swift is that subclasses must implement init?(coder) even if you don't use Storyboard.
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
It's not elegant. How can I avoid overwriting it in a subclass?
If you have a base class, override it in the base class and add the @available(*, unavailable) flag so that its subclasses can avoid overriding the method, and this method also removed from code completion.
@available(*, unavailable)
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
Also if you don't have a parent class and if you have to implement init?(coder:) you can implement a global function as below to avoid string coding in every new class:
@inlinable
@inline(__always)
public func fatalErrorNotImplemented(
function: String = #function,
file: StaticString = #file,
line: UInt = #line
) -> Never {
fatalError(
function + " not implemented",
file: file,
line: line
)
}
Usage:
final class AnotherView: UIView {
let value: Any
init(config: Any) {
self.value = value
super.init(frame: .zero)
}
@available(*, unavailable)
required init?(coder: NSCoder) {
fatalErrorNotImplemented() // No strings
}
}
