Update Exercises Directory Names to Reflect Order

exercises/14_generics/generics2.rs

@@ -0,0 +1,34 @@
+// generics2.rs
+//
+// This powerful wrapper provides the ability to store a positive integer value.
+// Rewrite it using generics so that it supports wrapping ANY type.
+//
+// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
+// hint.
+
+// I AM NOT DONE
+
+struct Wrapper {
+    value: u32,
+}
+
+impl Wrapper {
+    pub fn new(value: u32) -> Self {
+        Wrapper { value }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn store_u32_in_wrapper() {
+        assert_eq!(Wrapper::new(42).value, 42);
+    }
+
+    #[test]
+    fn store_str_in_wrapper() {
+        assert_eq!(Wrapper::new("Foo").value, "Foo");
+    }
+}