Re: duplicate method found, but can't locate
Re: duplicate method found, but can't locate
- Subject: Re: duplicate method found, but can't locate
- From: Jim Correia <email@hidden>
- Date: Wed, 6 Jan 2010 20:40:19 -0500
On Jan 6, 2010, at 7:33 PM, Shane wrote:
> I'm getting this error from my main app controller which is trying to
> send a message to a thread on a queue (using YAMessageQueue).
>
> [[networkQueue proxyForTarget:networkServer] save:[self saveFile]];
> Cannot convert 'NSString*' to 'NSError**' in argument passing
>
> I have no idea where it thinks it needs to convert to NSError**. [self
> saveFile] returns an NSString*. In my server file I have the
> following:
The problem is likely that -proxyForTarget: returns an `id`.
> I can see that there seems to be some confusion with the save: method
> in the @protocol because the warning seems to imply that it found
> 'another' save: by saying 'Also found …'.
>
> But I have no idea where it's finding the save: method that needs to
> use NSError**, if that is the case.
NSManagedObjectContext defines -(BOOL)save:(NSError **)error;
If -proxyForTarget: returns an id, then the compiler doesn’t know which of the available signatures you really meant to use.
You can either rename your -save: method, or cast the result of -proxyForTarget to the static type you are sending the message to.
- Jim_______________________________________________
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