Ruby | Queue enq() function Last Updated : 12 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The enq() is an inbuilt function in Ruby inserts the element in the queue. Syntax: q_name.enq(element) Parameters: The function takes the element to be inserted into the queue. Return Value: It inserts the element into the queue. Example 1: CPP #Ruby program for enq() function in Queue #Create a new QUEUE q1 q1 = Queue.new #pushes 5 q1.enq(5) #pushes 6 q1.enq(6) #Prints the element puts q1.pop puts q1.pop Output: 5 6 Example 2: CPP #Ruby program for enq() function in Queue #Create a new QUEUE q1 q1 = Queue.new #push 10 q1.enq(10) #push 12 q1.enq(12) #Prints the element puts q1.pop #Again pushes 13 q1.enq(13) #Prints the element puts q1.pop #Prints the element puts q1.pop Output: 10 12 13 Reference: https://devdocs.io/ruby~2.5/queue#method-i-enq Comment More infoAdvertise with us Next Article Ruby | Queue empty? function G gopaldave Follow Improve Article Tags : Ruby Ruby-Methods Ruby Collections Ruby Queue-class Similar Reads Ruby | Queue deq() function The deq() is an inbuilt function in Ruby returns the element in the front of the queue and removes it from the queue. Syntax: q_name.deq() Parameters: The function does not takes any element. Return Value: It returns the first element which is at the front of the queue and removes it from the queue. 1 min read Ruby | Queue clear() function The clear() is an inbuilt function in Ruby clears the queue and makes it size to be zero again. We can re-insert objects again to it. Syntax: q_name.clear() Parameters: The function does not takes any element. Return Value: It clears the queue and does not returns anything. Example 1: CPP #Ruby prog 1 min read Ruby | Queue close() function The close() is an inbuilt function in Ruby closes the queue permanently and does not allow any more push or pop operations in it. A closed queue cannot be re-opened. Syntax: q_name.close() Parameters: The function does not takes any element. Return Value: It closes the queue and does not returns an 1 min read Ruby | Queue empty? function The empty? is an inbuilt function in Ruby checks if the queue is empty or not?. It returns a boolean value, which is true if the Queue is empty or it returns false. Syntax: q_name.empty? Parameters: The function does not takes any element. Return Value: It returns true if the queue is empty else it 1 min read 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 els 1 min read Ruby | Queue pop() function The pop() is an inbuilt function in Ruby returns the element in the front of the queue and removes it from the queue. Syntax: q_name.pop() Parameters: The function does not takes any element. Return Value: It returns the first element which is at the front of the queue and removes it from the queue. 1 min read Like