Break, next, and redo behavior in Ruby - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the break keyword do inside a Ruby loop?

It immediately stops the loop and exits it, continuing execution after the loop.

beginner

How does next behave inside a Ruby loop?

It skips the rest of the current loop iteration and moves to the next iteration.

intermediate

What is the purpose of redo in a Ruby loop?

It restarts the current iteration of the loop without re-evaluating the loop condition or moving to the next element.

beginner

Given this code snippet, what will be printed?

i = 0
while i < 3
  i += 1
  next if i == 2
  puts i
end

It will print: 1 3 Because when i is 2, next skips the puts and moves to the next iteration.

intermediate

Explain the difference between redo and next in Ruby loops.

next skips to the next iteration, moving forward in the loop. redo repeats the current iteration without moving forward or checking the loop condition again.

What happens when break is executed inside a Ruby loop?

A The loop continues normally.

B The current iteration is skipped.

C The loop stops immediately and exits.

D The current iteration restarts.

break stops the loop immediately and exits it.

Which keyword skips the rest of the current iteration and moves to the next one in Ruby?

A break

B next

C redo

D continue

next skips the rest of the current iteration and moves to the next.

What does redo do inside a Ruby loop?

A Repeats the current iteration without moving forward.

B Skips to the next iteration.

C Exits the loop.

D Ends the current iteration and moves forward.

redo repeats the current iteration without advancing or checking the loop condition.

In Ruby, which keyword would you use to restart the current loop iteration without changing the loop variable?

A redo

B next

C break

D retry

redo restarts the current iteration without changing the loop variable.

What will this Ruby code print?

3.times do |i|
  if i == 1
    break
  end
  puts i
end

A 0 1 2

B Nothing

C 1 2

D 0

When i is 1, break stops the loop, so only 0 is printed.

Describe how break, next, and redo control the flow inside Ruby loops.

Think about whether the loop stops, skips forward, or repeats.

Give an example scenario where using redo inside a loop is helpful.

Consider when you want to try the same step again without advancing.