finish chapter 8

1 files changed, 20 insertions, 0 deletions

diff --git a/rust/theBook/chapter-8-common-collections/vector/src/main.rs b/rust/theBook/chapter-8-common-collections/vector/src/main.rs
new file mode 100644
index 0000000..96bd094
--- /dev/null
+++ b/rust/theBook/chapter-8-common-collections/vector/src/main.rs
@@ -0,0 +1,20 @@
+fn main() {
+    let mut v = vec![1,2,3,4,5];
+
+    let op: &i32 = &v[2];
+    println!("The third element is {op}");
+
+    let op: Option<&i32> = v.get(2);
+    match op {
+        Some(i) => println!("this is {i}"),
+        None    => println!("this isn't"),
+    }
+    
+   v.push(6);
+
+    for i in &mut v {
+        *i += 50;
+        println!("{i}");
+    }
+
+}