Remove TODO comments

exercises/option/option2.rs

@@ -14,8 +14,6 @@ fn main() {
         optional_values_vec.push(Some(x));
     }
 
-    // TODO: make this a while let statement - remember that vector.pop also adds another layer of Option<T>
-    // You can stack `Option<T>`'s into while let and if let
     while let Some(Some(value)) = optional_values_vec.pop() {
         println!("current value: {}", value);
     }

exercises/structs/structs1.rs

@@ -28,7 +28,6 @@ mod tests {
 
     #[test]
     fn tuple_structs() {
-        // TODO: Instantiate a tuple struct!
         let green = ColorTupleStruct(String::from("green"), String::from("#00FF00"));
 
         assert_eq!(green.0, "green");
@@ -37,7 +36,6 @@ mod tests {
 
     #[test]
     fn unit_structs() {
-        // TODO: Instantiate a unit struct!
         let unit_struct = UnitStruct;
         let message = format!("{:?}s are fun!", unit_struct);
 

exercises/structs/structs2.rs

@@ -31,7 +31,6 @@ mod tests {
     #[test]
     fn your_order() {
         let order_template = create_order_template();
-        // TODO: Create your own order using the update syntax and template above!
         let your_order = Order {
             name: String::from("Hacker in Rust"),
             count: 1,

exercises/traits/traits2.rs

@@ -14,7 +14,6 @@ trait AppendBar {
     fn append_bar(self) -> Self;
 }
 
-//TODO: Add your code here
 impl AppendBar for Vec<String> {
     fn append_bar(mut self) -> Self {
         self.push(String::from("Bar"));