ListenerGroup

public class ListenerGroup

A class that provides a set of helper functions that enables a caller to wait for a group of listener blocks to finish executing.

Usage Example:

 //Wait for all of the listeners to stop.
 ListenerGroup.waitForListeners()

 //Enqueue a block of code on a given queue, assigning it to the listener group in the process (so we can wait on it later).
 ListenerGroup.enqueueAsynchronously(on: DispatchQueue.global(), block: queuedBlock)

waitForListeners()
Wait for all of the listeners to stop

Usage Example:
```
ListenerGroup.waitForListeners()
```
Declaration
Swift

public static func waitForListeners()


                    
                    
                    enqueueAsynchronously(on:block:)

Enqueue a block of code on a given queue, assigning it to the listener group in the process (so we can wait on it later).

Usage Example:

 ListenerGroup.enqueueAsynchronously(on: DispatchQueue.global(), block: queuedBlock)

Declaration

Swift

public static func enqueueAsynchronously(on queue: DispatchQueue, block: DispatchWorkItem)

Parameters

`on`	The queue on to which the provided block will be enqueued for asynchronous execution.
`block`	The block to be enqueued for asynchronous execution.