Add Vec::drain method (#12449)

fitzgen · web-flow · commit 342710aedae7 · 2026-01-27T21:41:37.000Z
diff --git a/crates/core/src/alloc/vec.rs b/crates/core/src/alloc/vec.rs
@@ -82,6 +82,14 @@ impl<T> Vec<T> {
         self.inner.push(value);
         Ok(())
     }
+
+    /// Same as [`std::vec::Vec::drain`].
+    pub fn drain<R>(&mut self, range: R) -> std_alloc::vec::Drain<'_, T>
+    where
+        R: core::ops::RangeBounds<usize>,
+    {
+        self.inner.drain(range)
+    }
 }
 
 impl<T> Deref for Vec<T> {

Original file line number	Diff line number	Diff line change
`@@ -82,6 +82,14 @@ impl<T> Vec<T> {`
`82`	`82`	`self.inner.push(value);`
`83`	`83`	`Ok(())`
`84`	`84`	`}`
	`85`	`+`
	`86`	+ /// Same as [`std::vec::Vec::drain`].
	`87`	`+ pub fn drain<R>(&mut self, range: R) -> std_alloc::vec::Drain<'_, T>`
	`88`	`+ where`
	`89`	`+ R: core::ops::RangeBounds<usize>,`
	`90`	`+ {`
	`91`	`+ self.inner.drain(range)`
	`92`	`+ }`
`85`	`93`	`}`
`86`	`94`
`87`	`95`	`impl<T> Deref for Vec<T> {`