Swaps the contents of this buffer with the contents of another. Not thread-safe.

move (or copy) the value at the front of the queue to given variable

Enqueues a single item (by copying it). Fails if not enough room to enqueue. Thread-safe when called by producer thread. No exception guarantee (state

This is what you have to do to try_enqueue() a movable type, and demonstrates why try_emplace() is useful

Note: The queue should not be accessed concurrently while it's being deleted. It's up to the user to synchronize this.

Note: The queue should not be accessed concurrently while it's being deleted. It's up to the user to synchronize this.