Store Completion Handler in Variable iOS (Objective c)

Question

I need to do a repeating task with the result of an http request and so would like to store the declaration of the completion hander in a variable (or somehow declare it as a function that can be passed in). Example code: ``` [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) { // carry out some action }]; ``` I would like to be able to write ``` [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler: standardHandler ]; ``` Where standardHandler contains a block function. Is this possible? I'm quite new to Objective C so sorry if this is an obvious question.

Accepted Answer

Sure:

```
void (^completionHandler)(NSURLResponse *, NSData *, NSError *) = ^(NSURLResponse *response, NSData *data, NSError *error) {
    // carry out some action
};
[NSURLConnection sendAsynchronousRequest:request
                                   queue:[NSOperationQueue mainQueue]
                       completionHandler:completionHandler];
```

Store Completion Handler in Variable iOS (Objective c)

Solution

Problem