pub use equivalent::Equivalent;

Cargo.toml

@@ -15,6 +15,8 @@ rust-version = "1.64"
 bench = false
 
 [dependencies]
+equivalent = { version = "1.0", default-features = false }
+
 arbitrary = { version = "1.0", optional = true, default-features = false }
 quickcheck = { version = "1.0", optional = true, default-features = false }
 serde = { version = "1.0", optional = true, default-features = false }

RELEASES.md

@@ -26,6 +26,9 @@
     However, exactness only applies to the direct capacity for items, while the
     raw hash table still follows its own rules for capacity and load factor.
 
+  - The `Equivalent` trait is now re-exported from the `equivalent` crate,
+    intended as a common base to allow types to work with multiple map types.
+
   - The `hashbrown` dependency has been updated to version 0.14.
 
   - The `serde_seq` module has been moved from the crate root to below the

src/lib.rs

@@ -117,7 +117,6 @@ use alloc::vec::{self, Vec};
 mod arbitrary;
 #[macro_use]
 mod macros;
-mod equivalent;
 mod mutable_keys;
 #[cfg(feature = "serde")]
 #[cfg_attr(docsrs, doc(cfg(feature = "serde")))]
@@ -136,9 +135,9 @@ mod rayon;
 #[cfg(feature = "rustc-rayon")]
 mod rustc;
 
-pub use crate::equivalent::Equivalent;
 pub use crate::map::IndexMap;
 pub use crate::set::IndexSet;
+pub use equivalent::Equivalent;
 
 // shared private items
 

src/map.rs

@@ -33,9 +33,8 @@ use alloc::vec::Vec;
 use std::collections::hash_map::RandomState;
 
 use self::core::IndexMapCore;
-use crate::equivalent::Equivalent;
 use crate::util::{third, try_simplify_range};
-use crate::{Bucket, Entries, HashValue, TryReserveError};
+use crate::{Bucket, Entries, Equivalent, HashValue, TryReserveError};
 
 /// A hash table where the iteration order of the key-value pairs is independent
 /// of the hash values of the keys.

src/map/core.rs

@@ -17,9 +17,8 @@ use core::fmt;
 use core::mem;
 use core::ops::RangeBounds;
 
-use crate::equivalent::Equivalent;
 use crate::util::simplify_range;
-use crate::{Bucket, Entries, HashValue};
+use crate::{Bucket, Entries, Equivalent, HashValue};
 
 /// Core of the map that does not depend on S
 pub(crate) struct IndexMapCore<K, V> {