Back-End Programming Exam > Back-End Programming Videos > Introduction to Coding with Ruby (in Hindi) > Ruby Programming Tutorial-5-while And while modifier
Ruby Programming Tutorial-5-while And while modifier Video Lecture | Introduction to Coding with Ruby (in Hindi) - Back-End Programming
FAQs on Ruby Programming Tutorial-5-while And while modifier Video Lecture - Introduction to Coding with Ruby (in Hindi) - Back-End Programming
| 1. What is a while loop in Ruby? |  |
Ans. A while loop in Ruby is a control flow statement that allows a block of code to be executed repeatedly as long as a certain condition is true. The code inside the loop will continue to execute until the condition becomes false.
| 2. What is the difference between a while loop and a while modifier in Ruby? | |
Ans. The difference between a while loop and a while modifier in Ruby is in their syntax and usage. A while loop uses the keyword "while" followed by a condition and a block of code, whereas a while modifier uses the keyword "while" followed by a condition and then the code to be executed, all in a single line.
| 3. Can I use a while loop without specifying a condition in Ruby? | |
Ans. No, a while loop in Ruby requires a condition to be specified. The condition is evaluated before each iteration of the loop, and if it is false initially, the loop will not execute at all. However, you can use a while loop with a condition that is always true (e.g., while true) to create an infinite loop.
| 4. What happens if the condition of a while loop is initially false? | |
Ans. If the condition of a while loop is false initially, the code inside the loop will not execute at all. The loop will be bypassed, and the program will continue with the next statement after the while loop.
| 5. Can I use a while loop to iterate over an array in Ruby? | |
Ans. Yes, you can use a while loop to iterate over an array in Ruby. You can set the condition of the while loop to check the index of the array and continue iterating until the index exceeds the length of the array. Inside the loop, you can access the elements of the array using the index.
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