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On 8/24/11 5:46 PM, Brad Stone wrote:
> This is the method definition - (void)saveToURL:(NSURL *)url
> ofType:(NSString *)typeName
> forSaveOperation:(NSSaveOperationType)saveOperation
> completionHandler:(void (^)(NSError *errorOrNil))completionHandler
This indicates it is expecting a block with no return value and
accepting one argument, a pointer to an NSError.
So you would pass in something like:
^(NSError *error) { // Do something with error if present }
as the completionHandler.
> I've used blocks before like below but I don't understand the
> syntax above and I couldn't find an example on the internet or the
> documentation. Any help would be appreciated. [openPanel
> beginSheetModalForWindow:[NSApp keyWindow]
> completionHandler:^(NSInteger theResult) { if (theResult) { // some
> code here }
This is very similar to the above.
I recommend
http://developer.apple.com/library/ios/#featuredarticles/Short_Practical_Guide_Blocks/_index.html.
- --
Conrad Shultz
Synthetiq Solutions
www.synthetiqsolutions.com
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