How can I check whether a variable is defined in Ruby? Is there an isset-type method available?
How can I check whether a variable is defined in Ruby? Is there an
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
How can I check whether a variable is defined in Ruby? Is there an isset-type method available?
Use the
defined?keyword (documentation). It will return a String with the kind of the item, ornilif it doesn’t exist.As skalee commented: ‘It is worth noting that variable which is set to nil is initialized.’