Convention for Naming Getters

[theduke]

I noticed that the guidelines don't recommend a way to name getters.

fn get_member(&self) -> &Member

vs

fn member(&self) -> &Member

Might be nice to recommend something here.

I'd be strongly in favor of the second option without get_.

[sfackler]

With very few exceptions (e.g. get_ref and get_mut), the get_ prefix is not used in Rust code.

[alteous]

fn member(&self) -> &Member

Should be the preferred option.

[dtolnay]

Ideally the current "Single-element containers implement appropriate getters" guideline should be expanded to cover getters more generally.

[dtolnay]

Let's be sure to touch on the difference between conversions and accessors. As an example, TempDir::path is an accessor so it would not be correct to call it TempDir::as_path.

[dtolnay]

I generalized the explanation of getter naming in a80355d and added a note about getter vs conversion in 5ac0bd0.