Init.

3 files changed, 47 insertions, 0 deletions

diff --git a/rust-book/advanced/adv-lifetimes/Cargo.lock b/rust-book/advanced/adv-lifetimes/Cargo.lock
new file mode 100755
index 0000000..591810c
--- /dev/null
+++ b/rust-book/advanced/adv-lifetimes/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "adv-lifetimes"
+version = "0.1.0"
+
diff --git a/rust-book/advanced/adv-lifetimes/Cargo.toml b/rust-book/advanced/adv-lifetimes/Cargo.toml
new file mode 100755
index 0000000..b127e9f
--- /dev/null
+++ b/rust-book/advanced/adv-lifetimes/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "adv-lifetimes"
+version = "0.1.0"
+authors = ["Adam Carpenter <53hornet@gmail.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/rust-book/advanced/adv-lifetimes/src/main.rs b/rust-book/advanced/adv-lifetimes/src/main.rs
new file mode 100755
index 0000000..755baf4
--- /dev/null
+++ b/rust-book/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)
+}
+