do-catch

import Foundation

enum ConnectionFailure : ErrorType {
    case Error
}

func throwConnectionError() throws -> String {
    throw ConnectionFailure.Error
    return connect()
}

func connect() -> String {
    return "Connection"
}

func test() -> String {
    do {
        return try throwConnectionError() + "papa"
    }
    catch let error as ConnectionFailure {
        switch (error) {
        case .Error: print("mama")
            return ("mama")
        }
    }
    catch { return "UFO" }
}

print(test())