From f91da817be5688f052bce317b1f70ad7176fd13b Mon Sep 17 00:00:00 2001
From: Jordan Gong <jordan.gong@protonmail.com>
Date: Sun, 20 Sep 2020 15:55:28 +0800
Subject: Loading data on the heap using box

---
 smart_pointer/src/main.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 smart_pointer/src/main.rs

(limited to 'smart_pointer/src/main.rs')

diff --git a/smart_pointer/src/main.rs b/smart_pointer/src/main.rs
new file mode 100644
index 0000000..b19ab5f
--- /dev/null
+++ b/smart_pointer/src/main.rs
@@ -0,0 +1,14 @@
+// Recursive type using boxes
+enum List {
+    Cons(i32, Box<List>),
+    Nil,
+}
+
+fn main() {
+    // Storing `i32` value on heap
+    let b = Box::new(5);
+    println!("b = {}", b);
+
+    use crate::List::{Cons, Nil};
+    let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))));
+}
-- 
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