How to check if a string is empty in Ruby

In this tutorial, we are going to learn about how to check if a given string is empty or not in ruby.

Checking string is empty

To check if a string is empty or not, we can use the built-in empty? method in Ruby.

The empty? method returns true if a string is empty; otherwise, it returns false.

Here is an example:

name = ""

if name.empty?
   puts "string is empty"
else
   puts "string is not empty"
end

Output:

"string is empty"

Similarly, we can also use the length method to check for an empty string.

Example:

name = ""

if !name.length
   puts "string is empty"
else
   puts "string is not empty"
end

If you want to check if a variable is nil or empty, you can check it like this in Ruby.

name = nil

if name.nil? || name.empty?
   puts "string is empty"
else
   puts "string is not empty"
end