Test Your Knowledge: Ruby Programming Language Do you think you know all about Ruby programming language? Take this quiz and find out! delya90 published on February 260 responses 0 « Previous Next » Questions in vertical order 1/11 Who created the Ruby programming language? Yukihiro Matsumoto Matz Guido van Rossum Larry Wall 2/11 In which year was Ruby first released? 1995 2000 2005 3/11 What is the default file extension for Ruby files? .rb .py .java .cpp 4/11 Which of the following is a valid way to define a class in Ruby? class MyClass { } class MyClass end def MyClass: end MyClass = Class.new 5/11 What does the 'puts' method do in Ruby? Returns the index of an element in an array Outputs a string to the console with a newline Performs a mathematical operation Reads input from the user 6/11 Which of the following is not a valid Ruby variable name? my_var _myVar 2var myVar 7/11 What does the 'each' method do in Ruby? Sorts an array in ascending order Iterates over each element in an array Joins two arrays together Finds the maximum value in an array 8/11 Which operator is used for string concatenation in Ruby? & += + | 9/11 What does the 'self' keyword refer to in Ruby? The current object or class The parent object A reserved keyword for method naming The global scope 10/11 What type of programming language is Ruby? Interpreted Compiled Assembly Machine 11/11 What is the primary use of the 'gem' command in Ruby? To manage Ruby libraries and dependencies To run Ruby scripts To create new Ruby classes To install Ruby on a system
