AsyncBlockOperation

NSOperation subclass for async block.

• Both compatible with Swift and Objective-C.
• Light-weight. (4KB source code. Oh my god.)
• Short-hand method extension NSOperationQueue.

At a Glance

Swift

import AsyncBlockOperation
letoperation=AsyncBlockOperation{ op indoSomeAsyncTaskWithCompletionBlock{
op.complete() // complete operation
}}
queue.addOperation(operation)

Objective-C

#import<AsyncBlockOperation/AsyncBlockOperation.h>
AsyncBlockOperation *operation = [AsyncBlockOperation blockOperationWithBlock:^(AsyncBlockOperation *op) {
[selfdoSomeAsyncTaskWithCompletionBlock:^{
[op complete]; // complete operation
}];
}];
[queue addOperation:operation];

Short-hand Method Extension

As NSBlockOperation does, AsyncBlockOperation supports NSOperationQueue extension to add async block operations quickly.

Swift

queue.addOperationWithAsyncBlock{ op in
op.complete()}

Objective-C

[queue addOperationWithAsyncBlock:^(AsyncBlockOperation *op) {
[op complete];
}];

Further Reading

Wanna get callback after all operations are done? Consider using NSOperationQueue+CompletionBlock which provides completionHandler for NSOperationQueue.

For example:

letqueue=NSOperationQueue()
queue.completionHandler ={println("All images are loaded!")}
queue.addOperationWithAsyncBlock{ op inloadImage(imageURL1){ image in
image.append(image)
op.complete()}}
queue.addOperationWithAsyncBlock{ op inloadImage(imageURL2){ image in
image.append(image)
op.complete()}}

Installation

I recommend you to use CocoaPods, a dependency manager for Cocoa.

Podfile

pod'AsyncBlockOperation','~> 1.0'

License

AsyncBlockOperation is under MIT license. See the LICENSE file for more info.