Today I Learned

A Hashrocket project

Ruby #try Operator

In Rails, there’s a #try method that will attempt to call a method on an object. If the caller is not nil, it will return the result of the “tried” method. If the caller is nil, try will return nil:

chicken.try(:farm) # => "delicious" (assuming chicken is an object whose #farm function returns "delicious")

# otherwise

chicken.try(:farm) => nil

Ruby 2.3.0 introduced the Safe Navigation Operator &. that is a shorthand for the try method.

chicken&.farm # => "delicious" (assuming chicken is an object whose #farm function returns "delicious")

# otherwise

chicken&.farm => nil

(Shouts out to Dorian)

Looking for help? Each developer at Hashrocket has years of experience working with Ruby applications of all types and sizes. Contact us and find out how we can help you.