make const fn

Author: andylokandy

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "arraydeque"
-version = "0.5.0"
+version = "0.5.1"
 authors = ["andylokandy"]
 license = "MIT/Apache-2.0"
 edition = "2021"

README.md

@@ -58,6 +58,8 @@ fn main() {
 
 ## Changelog
 
+- 0.5.1 Make `ArrayDeque::new()` a const fn.
+- 
 - 0.5.0 Support consnt generic capacity. Remove `use_generic_array` feature.
 
 - 0.4.5 Update `generic-array` to `0.12`.

src/lib.rs

@@ -1002,7 +1002,7 @@ impl<T, const CAP: usize, B: Behavior> ArrayDeque<T, CAP, B> {
     /// let buf: ArrayDeque<usize, 2> = ArrayDeque::new();
     /// ```
     #[inline]
-    pub fn new() -> ArrayDeque<T, CAP, B> {
+    pub const fn new() -> ArrayDeque<T, CAP, B> {
         ArrayDeque {
             xs: MaybeUninit::uninit(),
             tail: 0,
@@ -1023,7 +1023,7 @@ impl<T, const CAP: usize, B: Behavior> ArrayDeque<T, CAP, B> {
     /// assert_eq!(buf.capacity(), 2);
     /// ```
     #[inline]
-    pub fn capacity(&self) -> usize {
+    pub const fn capacity(&self) -> usize {
         CAP
     }