How does this `let` work?

help
1

Hello,
Please help to explain what does let Person { name, ref age } = person; do exactly in the snippet below? And of cause why we can access name and age directly from println!? Thank you.

fn main() {
    #[derive(Debug)]
    struct Person { name: String, age: Box<u8>, }
    let person = Person { name: String::from("Alice"), age: Box::new(20), };

    let Person { name, ref age } = person;

    println!("The person's age is {}", age);
    println!("The person's name is {}", name);
}
2

This is a type of pattern syntax usually referred to as destructuring:

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3

yah, this below saying helps. Thanks.

We can also use patterns to destructure structs, enums, and tuples to use different parts of these values. Let’s walk through each value.

4

Here's my favorite post on the topic. (Even though it doesn't cover ref patterns or binding modes.)

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