chore: added more descriptive TODOs

exercises/conversions/as_ref_mut.rs

@@ -5,21 +5,22 @@
 
 // I AM NOT DONE
 
-// Obtain the number of bytes (not characters) in the given argument
-// Add the AsRef trait appropriately as a trait bound
+// Obtain the number of bytes (not characters) in the given argument.
+// TODO: Add the AsRef trait appropriately as a trait bound.
 fn byte_counter<T>(arg: T) -> usize {
     arg.as_ref().as_bytes().len()
 }
 
-// Obtain the number of characters (not bytes) in the given argument
-// Add the AsRef trait appropriately as a trait bound
+// Obtain the number of characters (not bytes) in the given argument.
+// TODO: Add the AsRef trait appropriately as a trait bound.
 fn char_counter<T>(arg: T) -> usize {
     arg.as_ref().chars().count()
 }
 
-// Squares a number using as_mut(). Add the trait bound as is appropriate and
-// implement the function body.
+// Squares a number using as_mut().
+// TODO: Add the appropriate trait bound.
 fn num_sq<T>(arg: &mut T) {
+    // TODO: Implement the function body.
     ???
 }
 

exercises/options/options1.rs

@@ -6,10 +6,10 @@
 // This function returns how much icecream there is left in the fridge.
 // If it's before 10PM, there's 5 pieces left. At 10PM, someone eats them
 // all, so there'll be no more left :(
-// TODO: Return an Option!
 fn maybe_icecream(time_of_day: u16) -> Option<u16> {
     // We use the 24-hour system here, so 10PM is a value of 22 and 12AM is a value of 0
     // The Option output should gracefully handle cases where time_of_day > 23.
+    // TODO: Complete the function body - remember to return an Option!
     ???
 }
 

exercises/traits/traits1.rs

@@ -16,7 +16,7 @@ trait AppendBar {
 }
 
 impl AppendBar for String {
-    //Add your code here
+    // TODO: Implement `AppendBar` for type `String`.
 }
 
 fn main() {

exercises/traits/traits2.rs

@@ -17,7 +17,7 @@ trait AppendBar {
     fn append_bar(self) -> Self;
 }
 
-//TODO: Add your code here
+// TODO: Implement trait `AppendBar` for a vector of strings.
 
 #[cfg(test)]
 mod tests {