From 333965318a5d000140d54be2a2a9e0832372f271 Mon Sep 17 00:00:00 2001
From: Adam Carpenter <53hornet@gmail.com>
Date: Thu, 21 Mar 2019 17:10:15 -0400
Subject: Added advanced features.

---
 advanced/adv-lifetimes/src/main.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 advanced/adv-lifetimes/src/main.rs

(limited to 'advanced/adv-lifetimes/src')

diff --git a/advanced/adv-lifetimes/src/main.rs b/advanced/adv-lifetimes/src/main.rs
new file mode 100644
index 0000000..755baf4
--- /dev/null
+++ b/advanced/adv-lifetimes/src/main.rs
@@ -0,0 +1,36 @@
+fn main() {
+    let num = 5;
+
+    let obj = Box::new(Ball { diameter: &num }) as Box<dyn Red>;
+}
+
+struct Context<'s>(&'s str);
+
+struct Parser<'c, 's: 'c> {
+    context: &'c Context<'s>,
+}
+
+impl<'c, 's> Parser<'c, 's> {
+    fn parse(&self) -> Result<(), &'s str> {
+        Err(&self.context.0[1..])
+    }
+}
+
+fn parse_context(context: Context) -> Result<(), &str> {
+    Parser { context: &context }.parse()
+}
+
+trait Red { }
+
+struct Ball<'a> {
+    diameter: &'a i32,
+}
+
+impl<'a> Red for Ball<'a> { }
+
+struct StrWrap<'a>(&'a str);
+
+fn foo(string: &str) -> StrWrap<'_> {
+    StrWrap(string)
+}
+
-- 
cgit v1.2.3