Ruby | Queue << function Last Updated : 12 Jul, 2025 Comments Improve Suggest changes Like Article Like Report 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 #Create a new QUEUE q1 q1 = Queue.new #push 5 q1 << 5 #push 6 q1 << 6 #Prints the element puts q1.pop puts q1.pop Output: 5 6 Example 2: CPP #Ruby program for << function in Queue #Create a new QUEUE q1 q1 = Queue.new #push 10 q1 << 10 #push 12 q1 << 12 #Prints the element puts q1.pop #Again pushes 13 q1 << 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-3C-3C Comment More infoAdvertise with us Next Article Must Do Coding Questions - Topic-wise G gopaldave Follow Improve Article Tags : Ruby Ruby Collections Ruby Queue-class Similar Reads Interview PreparationInterview Preparation For Software DevelopersMust Coding Questions - Company-wise Must Do Coding Questions - Topic-wiseCompany-wise Practice ProblemsCompany PreparationCompetitive ProgrammingSoftware Design-PatternsCompany-wise Interview ExperienceExperienced - Interview ExperiencesInternship - Interview ExperiencesPractice @GeeksforgeeksProblem of the DayTopic-wise PracticeDifficulty Level - SchoolDifficulty Level - BasicDifficulty Level - EasyDifficulty Level - MediumDifficulty Level - HardLeaderboard !!Explore More...Data StructuresArraysLinked ListStackQueueBinary TreeBinary Search TreeHeapHashingGraphAdvance Data StructuresMatrixStringAll Data StructuresAlgorithmsAnalysis of AlgorithmsSearching AlgorithmsSorting AlgorithmsPattern SearchingGeometric AlgorithmsMathematical AlgorithmsRandomized AlgorithmsGreedy AlgorithmsDynamic ProgrammingDivide & ConquerBacktrackingBranch & BoundAll AlgorithmsProgramming LanguagesCC++JavaPythonC#Go LangSQLPHPScalaPerlKotlinWeb TechnologiesHTMLCSSJavaScriptBootstrapTailwind CSSAngularJSReactJSjQueryNodeJSPHPWeb DesignWeb BrowserFile FormatsComputer Science SubjectsOperating SystemsDBMSComputer NetworkComputer Organization & ArchitectureTOCCompiler DesignDigital Elec. & Logic DesignSoftware EngineeringEngineering MathematicsData Science & MLComplete Data Science CourseData Science TutorialMachine Learning TutorialDeep Learning TutorialNLP TutorialMachine Learning ProjectsData Analysis TutorialTutorial LibraryPython TutorialDjango TutorialPandas TutorialKivy TutorialTkinter TutorialOpenCV TutorialSelenium TutorialGATE CSGATE CS NotesGate CornerPrevious Year GATE PapersLast Minute Notes (LMNs)Important Topic For GATE CSGATE CoursePrevious Year Paper: CS exams Like