format strings are a relatively new addition to Rust, so that's why you
probably didn't find the...

as your application grows here, I think you'll come to appreciate
anyhow. A common suggestion is...

You know the drill by now :)

Previously, this code said "Hey, I will take anything that can be
converted into a &Path," and n...

as written, this would look stuff up twice, instead, let's do that
once.

I really prefer using at least unwrap here. If this never happens,
they're equivalent, but if it...

We don't need an owned version of this to call this method.

Now that we've implemented From, this is no longer needed. Nice catch
@anonrig!

The *only* thing &String can meaningfully do over &str is examine the
capacity of the underlying...