CODEWITHSUNDEEP
swiftswift2
Oleksandr Matrosov
Oleksandr Matrosov

Reputation: 27133

Cannot convert call result type '_?' to expected type '[UInt]'

self.mapper.identityIdsForQuickbloxUserIds(userIDs.map{($0 as! NSNumber).unsignedLongValue}, completion: { identityIdsMapping, error in

Cannot convert call result type '_?' to expected type '[UInt]'

userIDs is NSSet

and here is a function:

func identityIdsForQuickbloxUserIds(userIds:[UInt], completion:(identityIdsMapping:[UInt: String]?, error:NSError?) -> Void)

how to convert it in a right way?

This is external function which return for me that set:

- (void)allDialogsWithPageLimit:(NSUInteger)limit
                extendedRequest:(QB_NULLABLE NSDictionary *)extendedRequest
                 iterationBlock:(void(^QB_NULLABLE_S )(QBResponse *QB_NONNULL_S response, NSArray QB_GENERIC(QBChatDialog *) *QB_NULLABLE_S dialogObjects, NSSet QB_GENERIC(NSNumber *) * QB_NULLABLE_S dialogsUsersIDs, BOOL * QB_NONNULL_S stop))iterationBlock
                     completion:(void(^QB_NULLABLE_S)(QBResponse * QB_NONNULL_S response))completion;

As you see we got that NSSet from here:

NSSet QB_GENERIC(NSNumber *) * QB_NULLABLE_S dialogsUsersIDs

that method is from QuickBlox SDK

Upvotes: 3

Views: 1940

Answers (2)

Maxim Kosov
Maxim Kosov

Reputation: 1980

userIDs is optional Set<NSNumber>? not Set<NSNumber> so you need unwrap if first with something like this

var ids = userIDs?.map { $0.unsignedLongValue } ?? [UInt]()

...

identityIdsForQuickbloxUserIds(ids, ...)

Upvotes: 1

user1046037
user1046037

Reputation: 17695

Example 1:

Here is a simple example:

    identityIdsForQuickbloxUserIds([1,2,3]) { dictionary, error in


    }

Example 2:

    let x = NSSet(array: [1, 2, 3]).map { $0 as! UInt }

    identityIdsForQuickbloxUserIds(x) { dictionary, error in


    }

Upvotes: 1

Related Questions