Add a function for fetching page titles

hello-async/Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+trpl = "0.2.0"

hello-async/src/main.rs

@@ -1,3 +1,13 @@
+use trpl::Html;
+
 fn main() {
     println!("Hello, world!");
 }
+
+async fn page_title(url: &str) -> Option<String> {
+    let response = trpl::get(url).await;
+    let response_text = response.text().await;
+    Html::parse(&response_text)
+        .select_first("title")
+        .map(|title_element| title_element.inner_html())
+}