Yield to execute blocks in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to yield control to the block.

Ruby

def greet
  puts "Hello"
  [1]
  puts "Goodbye"
end

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

Areturn

Byield

Ccall

Dbreak

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'return' instead of 'yield' stops the method instead of calling the block.

Using 'call' without a block variable causes an error.

The keyword 'yield' passes control from the method to the block given to it.

2fill in blank

medium

Complete the code to pass a value to the block using yield.

Ruby

def square(number)
  [1] number * number
end

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

Ayield

Breturn

Cyield()

Dcall

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'return' instead of 'yield' does not call the block.

Using 'yield()' without argument does not pass the value.

Using 'yield' with an argument passes that argument to the block.

3fill in blank

hard

Fix the error in the method to correctly yield to the block with two arguments.

Ruby

def combine(a, b)
  [1] a, b
end

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

Ayield

Byield()

Cyield a, b

Dyield(a, b)

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'yield()' without arguments does not pass any values.

Using 'yield(a, b)' is invalid syntax in Ruby.

To pass multiple arguments to the block, use 'yield' followed by the arguments separated by commas.

4fill in blank

hard

Fill both blanks to create a method that yields the square of a number and then returns a string.

Ruby

def process(number)
  result = [1] number * number
  [2] "Done"
end

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

Ayield

Breturn

Cputs

Dyield()

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'puts' instead of 'yield' does not call the block.

Not using 'return' causes the method to return the last evaluated expression.

The method yields the square to the block, then returns the string "Done".

5fill in blank

hard

Fill all three blanks to define a method that yields a greeting with a name, then yields a farewell, and finally returns a confirmation string.

Ruby

def conversation(name)
  [1] "Hello, #{name}!"
  [2] "Goodbye, #{name}!"
  [3] "Conversation finished"
end

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

Ayield

Breturn

Cyield()

Dputs

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'puts' instead of 'yield' does not call the block.

Using 'yield()' without arguments does not pass the messages.

The method yields two messages to the block and then returns a string.