Apply some clippy lints

src/geometry.rs

@@ -22,35 +22,35 @@ impl Point {
         Self { x: 0, y: 0 }
     }
 
-    pub const fn with_x(&self, x: u32) -> Self {
+    pub const fn with_x(self, x: u32) -> Self {
         Self { x, y: self.y }
     }
 
-    pub const fn with_y(&self, y: u32) -> Self {
+    pub const fn with_y(self, y: u32) -> Self {
         Self { x: self.x, y }
     }
 
-    pub const fn x(&self) -> u32 {
+    pub const fn x(self) -> u32 {
         self.x
     }
 
-    pub const fn y(&self) -> u32 {
+    pub const fn y(self) -> u32 {
         self.y
     }
 
-    pub const fn left_of(&self, other: &Self) -> bool {
+    pub const fn left_of(self, other: Self) -> bool {
         self.x < other.x
     }
 
-    pub const fn right_of(&self, other: &Self) -> bool {
+    pub const fn right_of(self, other: Self) -> bool {
         self.x > other.x
     }
 
-    pub const fn above(&self, other: &Self) -> bool {
+    pub const fn above(self, other: Self) -> bool {
         self.y < other.y
     }
 
-    pub const fn below(&self, other: &Self) -> bool {
+    pub const fn below(self, other: Self) -> bool {
         self.y > other.y
     }
 }
@@ -147,10 +147,10 @@ impl Rectangle {
     }
 
     pub fn intersects(&self, other: &Rectangle) -> bool {
-        !(self.top_left().right_of(&other.top_right())
-            || self.top_left().below(&other.bottom_left())
-            || self.top_right().left_of(&other.top_left())
-            || self.bottom_left().above(&other.top_left()))
+        !(self.top_left().right_of(other.top_right())
+            || self.top_left().below(other.bottom_left())
+            || self.top_right().left_of(other.top_left())
+            || self.bottom_left().above(other.top_left()))
     }
 
     pub fn intersection(&self, other: &Rectangle) -> Option<Rectangle> {
@@ -161,31 +161,27 @@ impl Rectangle {
         // idk wtf this is lol
         let in_top_left;
         let in_bottom_right;
-        if self.top_left().right_of(&other.top_left()) {
-            if self.top_left().below(&other.top_left()) {
+        if self.top_left().right_of(other.top_left()) {
+            if self.top_left().below(other.top_left()) {
                 in_top_left = self.top_left();
             } else {
                 in_top_left = Point::new(self.top_left().x(), other.top_left().y());
             }
+        } else if self.top_left().below(other.top_left()) {
+            in_top_left = Point::new(other.top_left().x(), self.top_left().y());
         } else {
-            if self.top_left().below(&other.top_left()) {
-                in_top_left = Point::new(other.top_left().x(), self.top_left().y());
-            } else {
-                in_top_left = other.top_left();
-            }
+            in_top_left = other.top_left();
         }
-        if self.bottom_right().left_of(&other.bottom_right()) {
-            if self.bottom_right().below(&other.bottom_right()) {
+        if self.bottom_right().left_of(other.bottom_right()) {
+            if self.bottom_right().below(other.bottom_right()) {
                 in_bottom_right = Point::new(self.bottom_right().x(), other.bottom_right().y());
             } else {
                 in_bottom_right = self.bottom_right();
             }
+        } else if self.bottom_right().below(other.bottom_right()) {
+            in_bottom_right = other.bottom_right();
         } else {
-            if self.bottom_right().below(&other.bottom_right()) {
-                in_bottom_right = other.bottom_right();
-            } else {
-                in_bottom_right = Point::new(other.bottom_right().x(), self.bottom_right().y());
-            }
+            in_bottom_right = Point::new(other.bottom_right().x(), self.bottom_right().y());
         }
         Some(Rectangle::from_corners(in_top_left, in_bottom_right))
     }
@@ -217,28 +213,28 @@ mod tests {
 
     #[test]
     fn test_point_left_of() {
-        assert!(Point::new(10, 20).left_of(&Point::new(20, 20)));
-        assert!(!Point::new(10, 11).left_of(&Point::new(10, 11)));
-        assert!(!Point::new(10, 11).left_of(&Point::new(8, 11)));
+        assert!(Point::new(10, 20).left_of(Point::new(20, 20)));
+        assert!(!Point::new(10, 11).left_of(Point::new(10, 11)));
+        assert!(!Point::new(10, 11).left_of(Point::new(8, 11)));
     }
 
     #[test]
     fn test_point_right_of() {
-        assert!(Point::new(10, 20).right_of(&Point::new(0, 20)));
-        assert!(!Point::new(10, 11).right_of(&Point::new(10, 11)));
-        assert!(!Point::new(10, 11).right_of(&Point::new(12, 11)));
+        assert!(Point::new(10, 20).right_of(Point::new(0, 20)));
+        assert!(!Point::new(10, 11).right_of(Point::new(10, 11)));
+        assert!(!Point::new(10, 11).right_of(Point::new(12, 11)));
     }
 
     #[test]
     fn test_point_above() {
-        assert!(Point::new(1, 1).above(&Point::new(1, 2)));
-        assert!(!Point::new(10, 11).above(&Point::origin()));
+        assert!(Point::new(1, 1).above(Point::new(1, 2)));
+        assert!(!Point::new(10, 11).above(Point::origin()));
     }
 
     #[test]
     fn test_point_below() {
-        assert!(Point::new(1, 1).below(&Point::new(1, 0)));
-        assert!(!Point::new(10, 11).below(&Point::new(12, 11)));
+        assert!(Point::new(1, 1).below(Point::new(1, 0)));
+        assert!(!Point::new(10, 11).below(Point::new(12, 11)));
     }
 
     #[test]

src/main.rs

@@ -15,6 +15,7 @@ fn main() {
         Rectangle::from_corner_width_height(Point::new(2010, 2100), 1, 1),
     ];
 
+    // Clone here so that we can continue to use the original if needed later.
     let r: Vec<_> = stream_algos::translate(various.clone().drain(0..), Point::new(1, 2)).collect();
     dbg!(&r);
 }

src/stream_algos.rs

@@ -52,8 +52,8 @@ pub fn get_all_intersecting<T>(rects: T, rectangle: &Rectangle) -> impl Iterator
 where
     T: Iterator<Item = Rectangle>,
 {
-    // We need to satisfy the borrow checker here.
-    let rectangle = rectangle.clone();
+    // We need to satisfy the borrow checker here, make a copy.
+    let rectangle = *rectangle;
     rects.filter(move |r| r.intersects(&rectangle))
 }
 
@@ -93,12 +93,12 @@ pub fn intersect_all<T>(mut rects: T) -> Option<Rectangle>
 where
     T: Iterator<Item = Rectangle>,
 {
-    let first = rects.next();
-
-    if let None = first {
-        // Can't do intersection if no items.
-        return None;
-    }
+    // The question mark operator is equivalent to:
+    // let first = match rects.next() {
+    //     None => return None,
+    //     Some(x) => x,
+    // };
+    let first = rects.next()?;
 
     fn intersect_helper(acc: Option<Rectangle>, rect: Rectangle) -> Option<Rectangle> {
         match acc {
@@ -107,7 +107,7 @@ where
         }
     }
 
-    rects.fold(first, intersect_helper)
+    rects.fold(Some(first), intersect_helper)
 }
 
 #[cfg(test)]