What am I doing wrong with this method definition and call?

Question

I have this in my class header:

typedef void(^DBSuccessBlock)();
typedef void(^DBErrorBlock)(int errorNumber, NSString* description);

- (void) connect:(NSString*) path isFile:(BOOL) flag
        success:(DBSuccessBlock) success
          error:(DBErrorBlock) error;

This is how I'm trying to call the method:

[db connect:filePathName isFile:YES success:^{
    // initialize db here if necessary
} error:^(int errorNumber, NSString *description) { //error on this line
    NSLog(description);
    return nil;
}];

The error line is giving me this compile error: Incompatible block pointer types sending 'void *(^)(int, NSString *_strong)' to parameter of type 'DBErrorBlock' (aka 'void (^)(int, NSString *_strong)')

The only difference I see is void* vs void and I'm not sure why. Can anyone help me figure out why I'm getting this error? Thanks.

Are you 100% sure that's what your `typedef`s and method declaration look like? — trojanfoe, Jun 12 '13 at 18:00

score 1 · Accepted Answer · answered Jun 12 '13 at 18:03

1

You are returning the value nil in a block with return type void. Remove the return nil line.

answered Jun 12 '13 at 18:03

Rob Bajorek

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That was it. Thanks. Still learning the nuances of using blocks. :) – Aaron Bratcher Jun 12 '13 at 18:08

What am I doing wrong with this method definition and call?

1 Answers1