Use impl Trait syntax for function params

src/from_fn.rs

@@ -13,11 +13,8 @@ where
 {
     /// Create array where each array element `T` is returned by the `f` call.
     #[inline]
-    pub fn from_fn<F>(mut f: F) -> Self
-    where
-        F: FnMut(usize) -> T,
-    {
-        Self::try_from_fn::<Infallible, _>(|n| Ok(f(n))).expect("should never fail")
+    pub fn from_fn(mut f: impl FnMut(usize) -> T) -> Self {
+        Self::try_from_fn::<Infallible>(|n| Ok(f(n))).expect("should never fail")
     }
 
     /// Create array fallibly where each array element `T` is returned by the `f` call, or return
@@ -26,10 +23,7 @@ where
     /// # Errors
     ///
     /// Propagates the `E` type returned from the provided `F` in the event of error.
-    pub fn try_from_fn<E, F>(f: F) -> Result<Self, E>
-    where
-        F: FnMut(usize) -> Result<T, E>,
-    {
+    pub fn try_from_fn<E>(f: impl FnMut(usize) -> Result<T, E>) -> Result<Self, E> {
         let mut array = Array::<MaybeUninit<T>, U>::uninit();
         try_from_fn_erased(array.0.as_mut(), f)?;
 

tests/mod.rs

@@ -82,10 +82,10 @@ fn from_fn() {
 
 #[test]
 fn try_from_fn() {
-    let array = Array::<u8, U6>::try_from_fn::<(), _>(|n| Ok((n + 1) as u8)).unwrap();
+    let array = Array::<u8, U6>::try_from_fn::<()>(|n| Ok((n + 1) as u8)).unwrap();
     assert_eq!(array.as_slice(), EXAMPLE_SLICE);
 
-    let err = Array::<u8, U6>::try_from_fn::<&'static str, _>(|_| Err("err"))
+    let err = Array::<u8, U6>::try_from_fn::<&'static str>(|_| Err("err"))
         .err()
         .unwrap();