Merge pull request rust-lang#10 from Dushistov/master

implement Borrow<str> to make possible search str in HashMap<SmolStr
Veykril · Mar 10, 2019 · eacd72d · eacd72d
2 parents 65484e0 + ce98026
commit eacd72d
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/src/lib.rs b/src/lib.rs
@@ -1,4 +1,4 @@
-use std::{fmt, hash, ops::Deref, sync::Arc};
+use std::{borrow::Borrow, fmt, hash, ops::Deref, sync::Arc};
 
 /// A `SmolStr` is a string type that has the following properties:
 ///
@@ -148,6 +148,12 @@ impl From<SmolStr> for String {
     }
 }
 
+impl Borrow<str> for SmolStr {
+    fn borrow(&self) -> &str {
+        self.as_str()
+    }
+}
+
 const INLINE_CAP: usize = 22;
 const N_NEWLINES: usize = 32;
 const N_SPACES: usize = 128;

diff --git a/tests/test.rs b/tests/test.rs
@@ -66,3 +66,10 @@ fn test_serde() {
     let s: SmolStr = serde_json::from_str(&s).unwrap();
     assert_eq!(s, "Hello, World");
 }
+
+#[test]
+fn test_search_in_hashmap() {
+    let mut m = ::std::collections::HashMap::<SmolStr, i32>::new();
+    m.insert("aaa".into(), 17);
+    assert_eq!(17, *m.get("aaa").unwrap());
+}