X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/bbd22a3d23af1ea8186c7a3bf733a07ba1f8ff70..f212d116773ee38f4e8a6b18c3aaa3869472de7b:/workspace/src/part05.rs?ds=sidebyside

diff --git a/workspace/src/part05.rs b/workspace/src/part05.rs
index d3c9544..78113b7 100644
--- a/workspace/src/part05.rs
+++ b/workspace/src/part05.rs
@@ -4,14 +4,14 @@
 // ## Big Numbers
 
 pub struct BigInt {
-    pub data: Vec<u64>,
+    pub data: Vec<u64>, // least significant digit first, no trailing zeros
 }
 
 // Now that we fixed the data representation, we can start implementing methods on it.
 impl BigInt {
     pub fn new(x: u64) -> Self {
         if x == 0 {
-            BigInt { data: vec![] }
+            unimplemented!()
         } else {
             unimplemented!()
         }
@@ -31,7 +31,7 @@ impl BigInt {
     // 
     // **Exercise 05.1**: Implement this function.
     // 
-    // *Hint*: You can use `pop()` to remove the last element of a vector.
+    // *Hint*: You can use `pop` to remove the last element of a vector.
     pub fn from_vec(mut v: Vec<u64>) -> Self {
         unimplemented!()
     }
@@ -59,7 +59,7 @@ impl<T: Clone> Clone for SomethingOrNothing<T> {
 }
 
 // **Exercise 05.2**: Write some more functions on `BigInt`. What about a function that returns the number of
-// digits? The number of non-zero digits? The smallest/largest digit?
+// digits? The number of non-zero digits? The smallest/largest digit? Of course, these should all just borrow `self`.
 
 // ## Mutation + aliasing considered harmful (part 2)
 enum Variant {