September Morn Update

Task/Multiple-distinct-objects/Rust/multiple-distinct-objects.rust

@@ -0,0 +1,21 @@
+use std::rc::Rc;
+use std::cell::RefCell;
+
+fn main() {
+    let size = 3;
+
+    // Clone the given element to fill out the vector.
+    let mut v: Vec<String> = vec![String::new(); size];
+    v[0].push('a');
+    println!("{:?}", v);
+
+    // Run a given closure to create each element.
+    let mut v: Vec<String> = (0..size).map(|i| i.to_string()).collect();
+    v[0].push('a');
+    println!("{:?}", v);
+
+    // For multiple mutable views of the same thing, use something like Rc and RefCell.
+    let v: Vec<Rc<RefCell<String>>> = vec![Rc::new(RefCell::new(String::new())); size];
+    v[0].borrow_mut().push('a');
+    println!("{:?}", v);
+}