Clarified vector endianness for Exercise 05.1.

[rust-101.git] / src / part05.rs

diff --git a/src/part05.rs b/src/part05.rs
index 71d712ab9584c01b9b8b3922b1547e6ed414966d..adbe5c75a382c75b10510715bcbbb5cf09030742 100644 (file)
--- a/src/part05.rs
+++ b/src/part05.rs
@@ -47,7 +47,8 @@ impl BigInt {
         }
     }
 
-    // We can convert any vector of digits into a number, by removing trailing zeros. The `mut`
+    // Any vector of digits, which meets the structure of BigInt's `data` field, can be easily
+    // converted into a big number just by removing trailing zeros. The `mut`
     // declaration for `v` here is just like the one in `let mut ...`: We completely own `v`, but Rust
     // still asks us to make our intention of modifying it explicit. This `mut` is *not* part of the
     // type of `from_vec` - the caller has to give up ownership of `v` anyway, so they don't care anymore
@@ -124,7 +125,7 @@ enum Variant {
     Text(String),
 }
 //@ Now consider the following piece of code. Like above, `n` will be a reference to a part of `var`,
-//@ and since we wrote `ref mut`, the reference will be exclusive and mutable. In other words, right after the match, `ptr`
+//@ and since we wrote `ref mut`, the reference will be unique and mutable. In other words, right after the match, `ptr`
 //@ points to the number that's stored in `var`, where `var` is a `Number`. Remember that `_` means
 //@ "we don't care".
 fn work_on_variant(mut var: Variant, text: String) {
@@ -147,4 +148,4 @@ fn work_on_variant(mut var: Variant, text: String) {
 //@ I hope this example clarifies why Rust has to rule out mutation in the presence of aliasing *in general*,
 //@ not just for the specific case of a buffer being reallocated, and old pointers becoming hence invalid.
 
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