stanislaw / compositeoperations Goto Github PK

As NSOperation's documentation states, I should override - start for async operations, but in your example it overrided - main, this is confusing.

CompositeOperations uses its own completion block which is run after NSOperation is finished (KVO about isFinished is sent). When working with NSOperationQueue this can lead to earlier deallocation of operation when we are in completion block:

operation.completion = ^(id result, id error) {
    // so far it is always fired but there is no strict policy about this known to the author
}