title: What is an idiomatic way to have multiple structs with the same properties in Rust?
body: <p>I'm aware that Rust does not have inheritance and that the language provides and easy way to share different implementations of the same methods across objects through the use of Traits. But is there an idiomatic way to share property name definitions or do they need to be defined on each struct?</p>
  <p>My use case is that I have many different structs that track some information. Each piece of information can be updated and I want each struct to know the date of its last update. Is there a common pattern (maybe macros?) to add a <code>last_update</code> property to all the structs or must I add it to each struct explicitly?</p>