Explain the fn argument

Marwes · Marwes · commit cae5a3a893f1 · 2021-01-24T20:07:54.000+01:00
diff --git a/src/raw/mod.rs b/src/raw/mod.rs
@@ -1170,6 +1170,9 @@ impl<A: Allocator + Clone> RawTableInner<A> {
         }
     }
 
+    // We use `fn` argument here for `drop` as the function will only be called if the `hasher`
+    // panics which should be exceptionally rare. In return we only instantiate a single
+    // `prepare_rehash_in_place` per allocator (instead of per type and allocator)
     #[allow(clippy::mut_mut)]
     #[inline]
     unsafe fn prepare_rehash_in_place<'s>(

Original file line number	Diff line number	Diff line change
`@@ -1170,6 +1170,9 @@ impl<A: Allocator + Clone> RawTableInner<A> {`
`1170`	`1170`	`}`
`1171`	`1171`	`}`
`1172`	`1172`
	`1173`	+ // We use `fn` argument here for `drop` as the function will only be called if the `hasher`
	`1174`	`+ // panics which should be exceptionally rare. In return we only instantiate a single`
	`1175`	+ // `prepare_rehash_in_place` per allocator (instead of per type and allocator)
`1173`	`1176`	`#[allow(clippy::mut_mut)]`
`1174`	`1177`	`#[inline]`
`1175`	`1178`	`unsafe fn prepare_rehash_in_place<'s>(`