Body: Implement From<()> (#2411)

axum-core/src/body.rs

@@ -84,6 +84,12 @@ impl Default for Body {
     }
 }
 
+impl From<()> for Body {
+    fn from(_: ()) -> Self {
+        Self::empty()
+    }
+}
+
 macro_rules! body_from_impl {
     ($ty:ty) => {
         impl From<$ty> for Body {

axum/CHANGELOG.md

@@ -7,9 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 # Unreleased
 
+- **added:** `Body` implements `From<()>` now ([#2411])
 - **change:** Update version of multer used internally for multipart ([#2433])
 - **change:** Update tokio-tungstenite to 0.21 ([#2435])
 
+[#2411]: https://github.com/tokio-rs/axum/pull/2411
 [#2433]: https://github.com/tokio-rs/axum/pull/2433
 [#2435]: https://github.com/tokio-rs/axum/pull/2435