32 lines
863 B
Swift
32 lines
863 B
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
|
|
|
|
import Foundation
|
|
|
|
extension Optional {
|
|
public func map<U>(_ transform: (Wrapped) throws -> U?) rethrows -> U? {
|
|
switch self {
|
|
case .some(let value): return try transform(value)
|
|
default: return nil
|
|
}
|
|
}
|
|
|
|
public func asType<R>(_ type: R.Type) -> R? {
|
|
switch self {
|
|
case .some(let value): return (value as? R)
|
|
default: return nil
|
|
}
|
|
}
|
|
|
|
public func defaulting(to value: Wrapped) -> Wrapped {
|
|
return (self ?? value)
|
|
}
|
|
}
|
|
|
|
extension Optional where Wrapped == String {
|
|
public func defaulting(to value: Wrapped, useDefaultIfEmpty: Bool = false) -> Wrapped {
|
|
guard !useDefaultIfEmpty || self?.isEmpty != true else { return value }
|
|
|
|
return (self ?? value)
|
|
}
|
|
}
|