Diagnose RxSwift

.swift

/*
* In order to diagnose Rx and see the number of resources your project uses there are a couple
* of steps you need to take
*
* 1) 
*   Add this line of code somewhere in your project, for example in AppDelegate
*
*/
 _ = Observable<Int>.interval(.seconds(1), scheduler: MainScheduler.instance)
            .subscribe(onNext: { _ in
                print("Resource count \(RxSwift.Resources.total)")
            })

/*
* 2)
*   This goes into the Podfile so it can download additional things needed
*
*/
post_install do |installer|
  installer.pods_project.targets.each do |target|
    if target.name == 'RxSwift'
      target.build_configurations.each do |config|
        if config.name == 'Debug'
          config.build_settings['OTHER_SWIFT_FLAGS'] ||= ['-D', 'TRACE_RESOURCES']
        end
      end
    end
  end
end

/*
* 3)
* Lastly, go to your Xcode proj -> Build Settings -> Other Swift Flags and add the following line
*
*/

-D TRACE_RESOURCES

/*
* All set, now run your app and you should begin to see someting like this in your console
*
*/
Resource count 2910
Resource count 2910
Resource count 2910
Resource count 2910
Resource count 2910
Resource count 2910

/*
* Use your app and if you notice the number continuously increases,
* congratulations it means that you leaked memory :)
*
*/