Ruby | Queue closed? function

The closed? is an inbuilt function in Ruby checks if the queue is closed or not?. It returns a boolean value, which is true if the Queue is closed or it returns false.

Syntax: q_name.closed? Parameters: The function does not takes any element. Return Value: It returns true if the queue is closed else it returns false.

Example 1: Output:

false
true

Example 2: Output:

closed

Reference: https://devdocs.io/ruby~2.5/queue#method-i-closed-3F