NSOperationQueue should have an addBlockOperationWithBlock: method

Originator:doug
Number:rdar://11734824 Date Originated:
Status:Open Resolved:
Product:iPhone SDK Product Version:6.0
Classification:Enhancement Reproducible:N/A
 
23-Jun-2012 10:02 PM Doug Russell:
Summary:

Currently NSOperationQueue has a method for adding block operations:

- (void)addOperationWithBlock:(void (^)(void))block;

which offers no reasonable way to access the operation thats created from within the block which makes testing for canceled unreasonable.

NSOperationQueue should either change addOperationWithBlock: to include the block operation or add a new method like the following:

- (void)addBlockOperationWithBlock:(void (^)(NSBlockOperation *op))block
{
	NSBlockOperation *blockOperation = [NSBlockOperation new];
	__weak NSBlockOperation *weakBlockOperation = blockOperation;
	[blockOperation addExecutionBlock:^{
		block(weakBlockOperation);
	}];
	[self addOperation:blockOperation];
}

Here's an implementation done via a category

http://cl.ly/231K170D3G453c0E0T0K

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