allow len without is_empty

src/catch/mod.rs

@@ -132,6 +132,7 @@ pub struct CatchStrains {
 impl CatchStrains {
     /// Returns the number of strain peaks per skill.
     #[inline]
+    #[allow(clippy::len_without_is_empty)]
     pub fn len(&self) -> usize {
         self.movement.len()
     }

src/lib.rs

@@ -332,6 +332,7 @@ impl Strains {
 
     /// Returns the number of strain peaks per skill.
     #[inline]
+    #[allow(clippy::len_without_is_empty)]
     pub fn len(&self) -> usize {
         match self {
             Strains::Catch(strains) => strains.len(),

src/mania/mod.rs

@@ -123,6 +123,7 @@ pub struct ManiaStrains {
 impl ManiaStrains {
     /// Returns the number of strain peaks per skill.
     #[inline]
+    #[allow(clippy::len_without_is_empty)]
     pub fn len(&self) -> usize {
         self.strains.len()
     }

src/osu/mod.rs

@@ -219,6 +219,7 @@ pub struct OsuStrains {
 impl OsuStrains {
     /// Returns the number of strain peaks per skill.
     #[inline]
+    #[allow(clippy::len_without_is_empty)]
     pub fn len(&self) -> usize {
         self.aim.len()
     }

src/taiko/mod.rs

@@ -170,6 +170,7 @@ pub struct TaikoStrains {
 impl TaikoStrains {
     /// Returns the number of strain peaks per skill.
     #[inline]
+    #[allow(clippy::len_without_is_empty)]
     pub fn len(&self) -> usize {
         self.color.len()
     }