I want to replace white spaces with a "-" inside of the struct created from the returned sqlx query. I've tried iter, iter_mut, and a for for loop, but nothing I do seems to mutate it.
#[derive(FromRow, Debug, Clone)]
struct Post {
title: String,
post_body: String,
}
// Post is a struct with two values. Both of them String. I want to replace the white space
// inside of my Post title with dashes "-".
let mut my_posts = sqlx::query_as::<_,Post>("select title, post_body from my_posts")
.fetch_all(&pool)
.await
.unwrap();
// I want to replace spaces with dashes
for a_post in &mut my_posts {
a_post.title.replace(" ", "-");
}
This is in an async function using tokio if that makes any difference.
this is the warning I get:
| a_post.title.replace(" ", "-");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this returns the replaced string as a new allocation, without modifying the original
= note: `#[warn(unused_must_use)]` on by default