Add a bunch of code

Signed-off-by: Carlos Maiolino <[email protected]>

1 files changed, 35 insertions, 0 deletions

diff --git a/rust/owner_ex.rs b/rust/owner_ex.rs
new file mode 100644
index 0000000..f76a783
--- /dev/null
+++ b/rust/owner_ex.rs
@@ -0,0 +1,35 @@
+fn main() {
+
+    // This is interesting...
+    // &str annotate we are using a string literal, not creating
+    // a string at run time.
+    // It means the size of the tuple is known at compilation time.
+    let x: (i32, i32, (), &str) = (1, 2, (), "hello");
+
+    // Because we know the tuple size at compilation time, (and likely
+    // because it's allocated on the stack, we can simply copy it here.
+    let y: (i32, i32, (), &str) = x;
+
+    println!("{:?}, {:?}", x, y);
+
+    // s oritinally immutable
+    let s: String = String::from("hello, ");
+
+    // Transferring ownership can be done to a mutable variable
+    let mut s1 = s;
+
+    s1.push_str("world");
+
+    println!("{}", s1);
+
+    // x now is a pointer to the heap memory
+    let x: Box<i32> = Box::new(5);
+
+    // y is also a pointer
+    let mut y: Box<i32> = Box::new(1);
+
+    // Dereferencing Y address
+    *y = 4;
+
+    assert_eq!(*x, 5);
+}