add c

2020-04-18 09:06:25 +08:00
parent 222e172c17
commit e4603f9d4a
1 changed files with 15 additions and 0 deletions
--- a/single_file_tests/rc.rs
+++ b/single_file_tests/rc.rs
@@ -0,0 +1,15 @@
+use std::rc::Rc;
+
+fn main() {
+    let a  = Rc::new(0);
+
+    println!("{}", Rc::strong_count(&a));
+    let b = a.clone();
+    println!("{}", Rc::strong_count(&a));
+    let c = Rc::clone(&a);
+    println!("{}", Rc::strong_count(&a));
+
+    println!("{}", a);
+    println!("{}", b);
+    println!("{}", c);
+}