View types make me think of the modifies clause introduced by some verification tools and in an earlier specification of Eiffel [1]. Basically the clause allows

View types make me think of the modifies clause introduced by some verification tools and in an earlier specification of Eiffel [1]. Basically the clause allows you to list the fields that are affected by a function with mutations. [1] https://bertrandmeyer.com/2011/07/04/if-im-not-pure-at-least-my-functions-are/ https://bertrandmeyer.com/2011/07/04/if-im-not-pure-at-least...