ownership, references

ownership/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "ownership"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

ownership/src/main.rs

@@ -0,0 +1,43 @@
+fn main() {
+    let mut s = String::from("farts");
+    let s2 = String::from("farts");
+    s.push_str(" and blarts");
+    println!("Hello, {s}!");
+
+    s = String::from("hello");
+    takes_ownership(s.clone());
+    takes_ownership(s.clone());
+    let r1 = &mut s;
+    takes_ref(r1);
+    let r2 = &mut s;
+    takes_ref(r2);
+    //takes_ref(r1);
+    let x = 5;
+    makes_copy(x);
+    let s3 = take_and_give_back(s);
+    println!("cha cha cha {}", s3);
+    let s4 = take_and_give_back(String::from("farts"));
+    let s5 = take_and_give_back(s2);
+
+
+    println!("cha cha cha {} {}", s4, s5);
+
+}
+
+fn take_and_give_back(mut some_string: String) -> String {
+    some_string.push_str("caflobble");
+    some_string
+}
+
+fn takes_ref(some_string: &mut String) {
+    some_string.push_str("sdf");
+    println!("{}", some_string);
+}
+
+fn takes_ownership(some_string: String) {
+    println!("{}", some_string);
+}
+
+fn makes_copy(some_int: u8) {
+    println!("some int: {}", some_int);
+}