Class NextTickQueue

Namespace: React\EventLoop\Tick
Located at Tick/NextTickQueue.php

Methods summary
`public`	# `__construct( React\EventLoop\LoopInterface $eventLoop )` Parameters `$eventLoop` `React\EventLoop\LoopInterface` $eventLoop The event loop passed as the first parameter to callbacks.
`public`	# `add( callable $listener )` Add a callback to be invoked on the next tick of the event loop. Add a callback to be invoked on the next tick of the event loop. Callbacks are guaranteed to be executed in the order they are enqueued, before any timer or stream events. Parameters `$listener` `callable` $listener The callback to invoke.
`public`	# `tick( )` Flush the callback queue. Flush the callback queue.
`public boolean`	# `isEmpty( )` Check if the next tick queue is empty. Check if the next tick queue is empty. Returns `boolean`