No, this feature has existed a long time. Here's a post from 2012 showing it's use: http://pcwalton.github.io/blog/2012/08/08/a-gentle-introduction-to-traits-in

No, this feature has existed a long time. Here's a post from 2012 showing it's use: http://pcwalton.github.io/blog/2012/08/08/a-gentle-introduction-to-traits-in-rust/ http://pcwalton.github.io/blog/2012/08/08/a-gentle-introduct...