No hassle Objective-C blocks-based KVO library with automatic removal

There are so many KVO libraries out there. Couldn't find one that supports both blocks and automatic removal of observers. And that's usually what I need. Just want to bind stuff around.

CLBlockObservation is available through CocoaPods, to install it simply add the following line to your Podfile:

pod "CLBlockObservation" 

Usage is straightforward. I would recommend including <NSObject+CLBlockObservation.h> in your .pch file.

[observee addObserver:observer keyPath:@"p1"block:^(id oldValue, id newValue){NSLog(@"do something great!")}];

There's also support for observing multiple keypaths:

[observee addObserver:observer keyPaths:@[ @"p1", @"p2" ] block:^{NSLog(@"be awesome!")}];

There's an XCTest project in this repository. It contains a few tests that verify the lifetime management of the observation and a good sample reference.

There's a script that runs the tests from command line:

$ clone https://github.com/eladb/CLBlockObservation $ cd CLBlockObservation/Tests $ ./run-tests.sh

Elad Ben-Israel, [email protected]

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