length

public property int length()

The number of elements in the queue.

Returns the size of the queue, equivalent to the number of elements in the queue.

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import System;   auto queue1 = new Queue<int>(); auto queue2 = new Queue<int>([ 1, 2, 3 ]);   Console.log(queue1.length); // 0 Console.log(queue2.length); // 3