Rust

9.5    Iterating through Option

After exploring how iterators and combinators allow you to efficiently traverse and manipulate collections, let’s now extend these concepts to handle more specialized types like Option, which we introduced in Chapter 5, Section 5.3. Iterating through an Option type provides a way to process values that may or may not be present so you can work seamlessly with optional data. This section will show you how the Option type integrates with iterators and how you can use familiar methods to handle optional values in a more expressive manner.

Consider the following code:

let some_product = Some("laptop");let mut products = vec!["cellphone", "battery", "charger"];  

This code initializes an optional variable some_product ...