Explicit return statement in Ruby - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does an explicit return statement do in Ruby?

It immediately ends the method and sends back the specified value to where the method was called.

beginner

How do you write an explicit return statement in Ruby?

Use the keyword return followed by the value you want to send back, like return 5.

beginner

What happens if you don’t use an explicit return in a Ruby method?

Ruby automatically returns the last evaluated expression in the method without needing the return keyword.

intermediate

Can you use multiple return statements in one Ruby method?

Yes, you can use multiple return statements to exit the method early based on conditions.

intermediate

Why might you choose to use an explicit return statement instead of relying on implicit return?

To make your code clearer and easier to understand, especially when you want to exit a method early or return from inside a condition.

What does the explicit return statement do in a Ruby method?

A Prints the value to the screen.

B Skips the method and runs the next one.

C Ends the method and returns the specified value immediately.

D Does nothing special.

The explicit return statement immediately ends the method and sends back the value you specify.

Which keyword is used for an explicit return in Ruby?

A return

B stop

C break

D exit

The keyword return is used to explicitly return a value from a method.

What value does a Ruby method return if there is no explicit return statement?

A The last evaluated expression's value

B The first expression's value

C nil

D An error

Ruby automatically returns the value of the last evaluated expression if no explicit return is used.

Can you have more than one return statement in a Ruby method?

A No, only one return is allowed.

B Yes, to return different values based on conditions.

C Only if they return the same value.

D Only in classes, not in methods.

Multiple return statements can be used to exit early or return different values depending on conditions.

Why might explicit return statements improve your Ruby code?

A They make the code run faster.

B They prevent errors automatically.

C They reduce the number of lines of code.

D They make the code clearer and easier to understand.

Explicit returns help readers understand when and what value a method returns, especially with early exits.

Explain how an explicit return statement works in Ruby and when you might want to use it.

Think about how you stop and send back a value from a method.

Describe the difference between implicit and explicit return in Ruby methods.

One is automatic, the other you write yourself.