Comparison operators in Ruby - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the == operator do in Ruby?

The == operator checks if two values are equal. It returns true if they are the same, otherwise false.

intermediate

What is the difference between == and === in Ruby?

== checks if two objects are equal in value. === is used mainly in case statements to test if an object matches a condition or belongs to a class.

beginner

What does the < operator do?

The < operator checks if the value on the left is less than the value on the right. It returns true if yes, otherwise false.

beginner

How does the != operator work?

The != operator checks if two values are not equal. It returns true if they are different, otherwise false.

beginner

What will 5 >= 3 return in Ruby?

It will return true because 5 is greater than or equal to 3.

Which operator checks if two values are exactly equal in Ruby?

A !=

B =

C ==

D <

The == operator checks if two values are equal.

What does the != operator do?

A Checks if two values are not equal

B Checks if two values are equal

C Assigns a value

D Checks if left is less than right

The != operator returns true if two values are not equal.

Which operator is used in Ruby case statements to test matching?

A ==

B !=

C <=

D ===

The === operator is used in case statements for matching.

What will 4 < 2 return?

A true

B false

C nil

D error

4 is not less than 2, so it returns false.

Which operator checks if left value is greater than or equal to right value?

A >=

B !=

C ==

D <=

The >= operator checks if left is greater than or equal to right.

Explain how to compare two numbers to check if one is less than the other in Ruby.

Think about the symbol that means 'less than'.

Describe the difference between == and === operators in Ruby.

One is for simple equality, the other is for pattern matching.