Ensure for cleanup in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to ensure the cleanup message is always printed.

Ruby

begin
  puts 'Start'
[1]
end

Drag options to blanks, or click blank then click option'

Aelse puts 'Cleanup'

Bensure puts 'Cleanup'

Crescue puts 'Cleanup'

Dfinally puts 'Cleanup'

Attempts:

3 left

💡 Hint

Common Mistakes

Using rescue instead of ensure

Using else instead of ensure

Using finally which is not Ruby syntax

The ensure block always runs, even if an error occurs.

2fill in blank

medium

Complete the code to print 'Cleanup done' regardless of errors.

Ruby

begin
  puts 'Processing'
  raise 'Error occurred'
[1]
end

Drag options to blanks, or click blank then click option'

Aelse puts 'No errors'

Brescue puts 'Error handled'

Censure puts 'Cleanup done'

Dfinally puts 'Cleanup done'

Attempts:

3 left

💡 Hint

Common Mistakes

Using rescue to print cleanup message

Using else which runs only if no error

Using finally which is not valid Ruby

The ensure block runs no matter what, so 'Cleanup done' is always printed.

3fill in blank

hard

Fix the error in the code to ensure cleanup always runs.

Ruby

begin
  puts 'Running'
[1]
  puts 'Done'
end

Drag options to blanks, or click blank then click option'

Aensure puts 'Cleanup'

Brescue puts 'Cleanup'

Celse puts 'Cleanup'

Dfinally puts 'Cleanup'

Attempts:

3 left

💡 Hint

Common Mistakes

Using rescue which runs only on errors

Using else which runs only if no error

Using finally which is not Ruby syntax

Only ensure guarantees the cleanup code runs regardless of errors.

4fill in blank

hard

Fill both blanks to print 'Start', handle errors, and always print 'Cleanup'.

Ruby

begin
  puts 'Start'
  raise 'Oops'
[1]
[2]
end

Drag options to blanks, or click blank then click option'

Arescue puts 'Error handled'

Bensure puts 'Cleanup'

Celse puts 'No error'

Dfinally puts 'Cleanup'

Attempts:

3 left

💡 Hint

Common Mistakes

Using else instead of rescue

Using finally which is invalid

Swapping rescue and ensure order

rescue handles errors, ensure always runs for cleanup.

5fill in blank

hard

Fill all three blanks to handle errors, print success message, and always cleanup.

Ruby

begin
  puts 'Try block'
  raise 'Fail'
[1]
[2]
[3]
end

Drag options to blanks, or click blank then click option'

Arescue puts 'Error caught'

Belse puts 'Success'

Censure puts 'Cleanup done'

Dfinally puts 'Cleanup done'

Attempts:

3 left

💡 Hint

Common Mistakes

Using finally which is invalid

Omitting else block

Placing ensure before rescue

rescue catches errors, else runs if no error, ensure always runs for cleanup.