You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/leptos/examples/fetch/src
    
    the code of the file until where you have to start completion: use leptos::{error::Result, *};
use serde::{Deserialize, Serialize};
use thiserror::Error;

#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct Cat {
    url: String,
}

#[derive(Error, Clone, Debug)]
pub enum CatError {
    #[error("Please request more than zero cats.")]
    NonZeroCats,
}

type CatCount = usize;

async fn fetch_cats(count: CatCount) -> Result<Vec<String>> {
    if count > 0 {
        // make the request
        let res = reqwasm::http::Request::get(&format!(
            "https://api.thecatapi.com/v1/images/search?limit={count}",
        ))
        .send()
        .await?
        // convert it to JSON
        .json::<Vec<Cat>>()
        .await?
        // extract the URL field for each cat
        .into_iter()
        .take(count)
        .map(|cat| cat.url)
        .collect::<Vec<_>>();
        Ok(res)
    } else {
        Err(CatError::NonZeroCats.into())
    }
}

pub fn fetch_example() -> impl IntoView {
    let (cat_count, set_cat_count) = create_signal::<CatCount>(0);

    // we use local_resource here because
    // 1) our error type isn't serializable/deserializable
    // 2) we're not doing server-side rendering in this example anyway
    //    (during SSR, creat
    
pub fn fetch_example() -> impl IntoView {
    let (cat_count, set_cat_count) = create_signal::<CatCount>(0);

    // we use local_resource here because
    // 1) our error type isn't serializable/deserializable
    // 2) we're not doing server-side rendering in this example anyway
    //    (during SSR, create_resource will begin loading on the server and resolve on the client)
    let cats = create_local_resource(cat_count, fetch_cats);

    let fallback = move |errors: RwSignal<Errors>| {
        let error_list = move || {
            errors.with(|errors| {
                errors
                    .iter()
                    .map(|(_, e)| view! { <li>{e.to_string()}</li> })
                    .collect_view()
            })
        };

        view! {
            <div class="error">
                <h2>"Error"</h2>
                <ul>{error_list}</ul>
            </div>
        }
    };

    // the renderer can handle Option<_> and Result<_> states
    // by displaying nothing for None if the resource is still loading
    // and by using the ErrorBoundary fallback to catch Err(_)
    // so we'll just use `.and_then()` to map over the happy path
    let cats_view = move || {
        cats.and_then(|data| {
            data.iter()
                .map(|s| view! { <p><img src={s}/></p> })
                .collect_view()
        })
    };

    view! {
        <div>
            <label>
                "How many cats would you like?"
                <input
                    type="number"
                    prop:value=move || cat_count.get().to_string()
                    on:input=move |ev| {
                        let val = event_target_value(&ev).parse::<CatCount>().unwrap_or(0);
                        set_cat_count(val);
                    }
                />
            </label>
            <Transition fallback=move || {
                view! { <div>"Loading (Suspense Fallback)..."</div> }
            }>
                <ErrorBoundary fallback>
                <div>
                    {cats_view}
                </div>
                </ErrorBoundary>
            </Transition>
        </div>
    }
}