Ruby | Queue size() function Last Updated : 07 Jan, 2020 Comments Improve Suggest changes Like Article Like Report 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() function in Queue #Create a new QUEUE q1 q1 = Queue.new #pushes 5 q1.enq(5) #pushes 6 q1.enq(6) #Prints the size puts q1.size #Pops the element q1.pop #Prints the size puts q1.size Output: 2 1 Example 2: CPP #Ruby program for size() function in Queue #Create a new QUEUE q1 q1 = Queue.new #Prints the size puts q1.size #pushes 5 q1.enq(5) #pushes 6 q1.enq(6) #pushes 7 q1.enq(7) #Prints the size puts q1.size #Pops the element q1.pop #Prints the size puts q1.size Output: 0 3 2 Reference: https://devdocs.io/ruby~2.5/queue#method-i-size Comment More infoAdvertise with us Next Article Ruby | Queue size() function gopaldave Follow Improve Article Tags : Ruby Ruby-Methods Ruby Collections Ruby Queue-class Similar Reads Ruby | Queue shift() function 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 qu 1 min read Ruby | Range size() function The size() is an inbuilt method in Ruby returns the size of the range. It returns the number of elements in the range. Syntax: range1.size() Parameters: The function accepts no parameter. Return Value: It returns the number of elements in the range. Example 1: Ruby # Ruby program for size() # method 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 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 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 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 << function The <<() is an inbuilt function in Ruby inserts the element in the queue. Syntax: q_name << 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 << function in Queue # 1 min read Like