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35 lines
959 B
35 lines
959 B
10 months ago
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extern crate trpl; // required for mdbook test
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// ANCHOR: all
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use trpl::{Either, Html};
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fn main() {
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let args: Vec<String> = std::env::args().collect();
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trpl::run(async {
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let title_fut_1 = page_title(&args[1]);
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let title_fut_2 = page_title(&args[2]);
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let (url, maybe_title) =
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match trpl::race(title_fut_1, title_fut_2).await {
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Either::Left(left) => left,
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Either::Right(right) => right,
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};
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println!("{url} returned first");
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match maybe_title {
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Some(title) => println!("Its page title is: '{title}'"),
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None => println!("Its title could not be parsed."),
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}
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})
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}
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async fn page_title(url: &str) -> (&str, Option<String>) {
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let text = trpl::get(url).await.text().await;
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let title = Html::parse(&text)
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.select_first("title")
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.map(|title| title.inner_html());
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(url, title)
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}
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// ANCHOR_END: all
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