Rust❤️When iterating over `chars`, why is the item not `&char`?

https://www.reddit.com/r/learnrust/comments/xpgg9f/when_iterating_over_chars_why_is_the_item_not_char/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

When iterating over `chars`, why is the item not `&char`?

When iterating over `chars`, why is the item not `&char`? It seems that `chars` is not a consuming iterator, and I tried this:

```
fn print_type_of<T>(_: T) {
println!("{}", std::any::type_name::<T>())
} fn main() {
let a = "123".to_string();
for b in a.chars() {
print_type_of(b);
}
let c = vec![1, 2, 3];
for d in c.iter() {
print_type_of(d);
}
for &e in c.iter() {
print_type_of(e);
}
}
```

fn print_type_of<T>(_: T) {
    println!("{}", std::any::type_name::<T>())
}

fn main() {
    let a = "123".to_string();
    for b in a.chars() {
        print_type_of(b);
    }
    let c = vec![1, 2, 3];
    for d in c.iter() {
        print_type_of(d);
    }
    for &e in c.iter() {
        print_type_of(e);
    }
}

The result is:
```
char
char
char
&i32
&i32
&i32
i32
i32
i32
```

Why is `b` not `&char`?

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