How to use nil? method In Ruby
The nil? method is used to explicitly check if a variable is nil. It returns true if the object isnil, otherwise false.
Syntax:
variable.nil?
Example:
Below is the Ruby program to check if a variable is nil using nil? method:
# Ruby program to check if a variable
# is nil using nil? method
# Example variable
variable = nil
if variable.nil?
puts "Variable is nil"
else
puts "Variable is not nil"
end
Output
Variable is nil
Explanation:
In this example, we use the nil? method to explicitly check if the variable is nil. If variable is nil, it prints “Variable is nil”, otherwise “Variable is not nil”.
How to check if a variable is nil in Ruby?
In Ruby, nil is used to indicate that a variable has not been assigned a value or that a method call returned nothing. This article focuses on discussing how to check if a variable is nil in Ruby.
Table of Content
- Using nil? method
- Using == operator
- Using unless statement
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