- /// Converts an <code>Option<[String]></code> into an <code>Option<[usize]></code>, preserving
- /// the original. The [`map`] method takes the `self` argument by value, consuming the original,
- /// so this technique uses `as_ref` to first take an `Option` to a reference
- /// to the value inside the original.
+ /// Calculates the length of an <code>Option<[String]></code> as an <code>Option<[usize]></code>
+ /// without moving the [`String`]. The [`map`] method takes the `self` argument by value,
+ /// consuming the original, so this technique uses `as_ref` to first take an `Option` to a
+ /// reference to the value inside the original.