completed final 04 traits exercise

exercises/04_traits/14_outro/src/lib.rs

@@ -8,3 +8,88 @@
 //   It should be possible to print its debug representation.
 //
 // Tests are located in the `tests` folder—pay attention to the visibility of your types and methods.
+
+use std::ops::Add;
+
+#[derive(Debug, Clone, Copy)]
+pub struct SaturatingU16 {
+    value: u16,
+}
+
+impl From<u16> for SaturatingU16 {
+    fn from(value: u16) -> Self {
+        return SaturatingU16 { value };
+    }
+}
+
+impl From<u8> for SaturatingU16 {
+    fn from(value: u8) -> Self {
+        return SaturatingU16 {
+            value: value.into(),
+        };
+    }
+}
+
+impl From<&u16> for SaturatingU16 {
+    fn from(value: &u16) -> Self {
+        return SaturatingU16 {
+            value: value.clone(),
+        };
+    }
+}
+
+impl From<&u8> for SaturatingU16 {
+    fn from(value: &u8) -> Self {
+        return SaturatingU16 {
+            value: value.clone().into(),
+        };
+    }
+}
+
+impl Add for SaturatingU16 {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        SaturatingU16 {
+            value: self.value.saturating_add(rhs.value),
+        }
+    }
+}
+
+impl Add<u16> for SaturatingU16 {
+    type Output = Self;
+    fn add(self, rhs: u16) -> Self::Output {
+        SaturatingU16 {
+            value: self.value.saturating_add(rhs),
+        }
+    }
+}
+
+impl Add<&u16> for SaturatingU16 {
+    type Output = Self;
+    fn add(self, rhs: &u16) -> Self::Output {
+        SaturatingU16 {
+            value: self.value.saturating_add(rhs.clone()),
+        }
+    }
+}
+
+impl Add<&Self> for SaturatingU16 {
+    type Output = Self;
+    fn add(self, rhs: &Self) -> Self::Output {
+        SaturatingU16 {
+            value: self.value.saturating_add(rhs.value.clone()),
+        }
+    }
+}
+
+impl PartialEq for SaturatingU16 {
+    fn eq(&self, other: &Self) -> bool {
+        self.value == other.value
+    }
+}
+
+impl PartialEq<u16> for SaturatingU16 {
+    fn eq(&self, other: &u16) -> bool {
+        self.value == other.clone()
+    }
+}

exercises/05_ticket_v2/00_intro/src/lib.rs

@@ -1,6 +1,6 @@
 fn intro() -> &'static str {
     // TODO: fix me 👇
-    "I'm ready to __!"
+    "I'm ready to refine the `Ticket` type!"
 }
 
 #[cfg(test)]