From a9cbcad4d4493aeb699cf3f0a4546dd1e677c49b Mon Sep 17 00:00:00 2001
From: Alexandre Bury <alexandre.bury@gmail.com>
Date: Mon, 7 Oct 2019 08:43:03 -0700
Subject: [PATCH] Add XY::sum and XY::product

---
 src/vec.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/vec.rs b/src/vec.rs
index a546fd3..03b847d 100644
--- a/src/vec.rs
+++ b/src/vec.rs
@@ -269,6 +269,20 @@ impl<T: Ord + Add<Output = T> + Clone> XY<T> {
     }
 }
 
+impl<T: Add> XY<T> {
+    /// Returns `self.x + self.y`.
+    pub fn sum(self) -> T::Output {
+        self.fold(std::ops::Add::add)
+    }
+}
+
+impl<T: Mul> XY<T> {
+    /// Returns `self.x * self.y`
+    pub fn product(self) -> T::Output {
+        self.fold(std::ops::Mul::mul)
+    }
+}
+
 impl<T: Zero + Clone> XY<T> {
     /// Returns a vector with the X component of self, and y=0.
     ///