Hmmm … my beginner’s rust is getting too rusty. Is this valid rust (it’d be new to me)?! If not, I’m guessing, from memory, the only way at this in rust is to

Hmmm … my beginner’s rust is getting too rusty. Is this valid rust (it’d be new to me)?! If not, I’m guessing, from memory, the only way at this in rust is to through traits?