Ruby | Queue shift() function Last Updated : 12 Jul, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The shift() is an inbuilt function in Ruby returns the element in the front of the queue and removes it from the queue. Syntax: q_name.shift() 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. Example 1: CPP #Ruby program for shift() function in Queue #Create a new QUEUE q1 q1 = Queue.new #push 5 q1.push(5) #push 6 q1.push(6) #Prints the top - most element and also shifts it puts q1.shift puts q1.shift Output: 5 6 Example 2: CPP #Ruby program for shift function in Queue #Create a new QUEUE q1 q1 = Queue.new #push 12 q1.push(12) #push 21 q1.push(21) #Prints the top - most element and also shifts it puts q1.shift puts q1.shift Output: 12 21 Reference: https://devdocs.io/ruby~2.5/queue#method-i-shift Comment More infoAdvertise with us Next Article Ruby | Queue pop() function G gopaldave Follow Improve Article Tags : Ruby Ruby-Methods Ruby Collections Ruby Queue-class Similar Reads Ruby | Queue size() function The size() is an inbuilt function in Ruby returns the current size of the Queue or the number of objects present in it. Syntax: q_name.size() Parameters: The function does not takes any parameter. Return Value: It returns the number of elements in the queue. Example 1: CPP #Ruby program for size() f 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 Ruby | Queue new() function The new() is an inbuilt function in Ruby creates a new queue of the given name. Syntax: q_name = Queue.new() Parameters: The function does not takes any parameter. Return Value: It creates a new queue. Example 1: CPP #Ruby program for new () function in Queue #Create a new QUEUE q1 q1 = Queue.new #p 1 min read Ruby | Queue enq() function 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 1 min read 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 push() function The push() is an inbuilt function in Ruby inserts the element in the queue. Syntax: q_name.push(element) Parameters: The function takes the element to be inserted into the queue. Return Value: It inserts the element into the queue. Example 1: Ruby #Ruby program for push() function in Queue #Creat 1 min read Like