Result+Catch.swift

extension Result {
    public func `catch`(_ handler: () throws -> Success) -> Result<Success, Error> {
        flatMapError { _ in
            .init { try handler() }
        }
    }

    public func `catch`(_ handler: (Failure) throws -> Success) -> Result<Success, Error> {
        flatMapError { error in
            .init { try handler(error) }
        }
    }

    public func get(default defaultValue: @autoclosure () -> Success) -> Success {
        self.default(defaultValue)
    }

    public func `default`(_ handler: () -> Success) -> Success {
        self.default { _ in handler() }
    }

    public func `default`(_ handler: (Failure) -> Success) -> Success {
        switch self {
        case .success(let success):
            return success
        case .failure(let error):
            return handler(error)
        }
    }
}