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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://hachyderm.io/users/Mara/statuses/109756970044589131">Mara (mara@hachyderm.io)'s status on Tuesday, 14-Mar-2023 22:52:21 JST</a><a href="https://hachyderm.io/@Mara" title="mara@hachyderm.io"><img src="https://gnusocial.jp/avatar/99749-48-20230218153453.webp" width="48" height="48" alt="Mara" style="position: absolute; left: 0; top: 0;">Mara</a><div><a href="https://hachyderm.io/@Mara/109756965897101365" rel="in-reply-to">in reply to</a></div></section><article><p>A must_use attribute on async functions now does what you expect.</p><p>#[must_use]<br>async fn hey() -&gt; Thing { … }</p><p>Now, #[must_use] applies to `Thing`, instead of to the `impl Future&lt;Output=Thing&gt;` (which wasn't very useful).</p><p>2/6</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/1320695#notice-2747657">In conversation</a><time datetime="2023-03-14T22:52:21+09:00" title="Tuesday, 14-Mar-2023 22:52:21 JST">Tuesday, 14-Mar-2023 22:52:21 JST</time> <span>from <span><a href="https://hachyderm.io/@Mara/109756970044589131" rel="external" title="Sent from hachyderm.io via ActivityPub">hachyderm.io</a></span></span><a href="https://hachyderm.io/@Mara/109756970044589131">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/805294">warning: unused output of future returned by `hey` that must be used
 --&gt; example.rs:7:5
  |
7 |     hey().await;
  |     ^^^^^^^^^^^</a></label><br><a href="https://media.hachyderm.io/media_attachments/files/109/756/968/444/029/340/original/dd123e2a62f9792d.png" rel="external">https://media.hachyderm.io/media_attachments/files/109/756/968/444/029/340/original/dd123e2a62f9792d.png</a></li></ol></footer></blockquote>

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Mara (mara@hachyderm.io)'s status on Tuesday, 14-Mar-2023 22:52:21 JST Mara
in reply to
A must_use attribute on async functions now does what you expect.
#[must_use]
async fn hey() -> Thing { … }
Now, #[must_use] applies to `Thing`, instead of to the `impl Future<Output=Thing>` (which wasn't very useful).
2/6
In conversationTuesday, 14-Mar-2023 22:52:21 JST from hachyderm.iopermalink
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1. warning: unused output of future returned by `hey` that must be used --> example.rs:7:5 | 7 | hey().await; | ^^^^^^^^^^^
  https://media.hachyderm.io/media_attachments/files/109/756/968/444/029/340/original/dd123e2a62f9792d.png

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