Nicolas Filzi17,489 Points
Why does Jason use interpolation on city, state and postal_code variables and not on street_1 and street_2 variables?
In the to_s method that is.
Andrew Stelmach12,372 Points
Without looking at it, I expect that the first three variables you mention are not assigned to Strings, so require interpolation, whereas the latter variables are already strings, so do not require interpolation.