Too many type arguments for class 'FBLPromise' (have 2, expected 1)

[hejunbinlan]

• (FBLPromise<NSData , NSURLResponse > )fetchWithURL:(NSURL )url { return [FBLPromise wrap2ObjectsOrErrorCompletion:^(FBLPromise2ObjectsOrErrorCompletion handler) { [NSURLSession.sharedSession dataTaskWithURL:url completionHandler:handler]; }]; } compile error： Too many type arguments for class 'FBLPromise' (have 2, expected 1)

[ghost]

Hi @hejunbinlan, in this case, the Promises' value would be an NSArray containing an NSData object and an NSURLResponse object. Here's an example.

[shoumikhin]

I.e. something like:

- (FBLPromise<NSArray *> *)fetchWithURL:(NSURL *)url {
  return [FBLPromise wrap2ObjectsOrErrorCompletion:^(FBLPromise2ObjectsOrErrorCompletion handler) {
    [NSURLSession.sharedSession dataTaskWithURL:url completionHandler:handler];
  }];
}

// ...

[[object fetchWithURL:...] then:^id(NSArray *result) {
  NSData *data = result.firstObject;
  NSURLResponse *response = result.lastObject;
  //...
}];