add a note to the README about this being a tutorial for an ancient version of Rust

[rust-101.git] / src / part04.rs

diff --git a/src/part04.rs b/src/part04.rs
index faa3e311cdb4c5adafcc983dd86d43c88582de7b..2381ff4ed00a631618e342ee9abdd47d65253939 100644 (file)
--- a/src/part04.rs
+++ b/src/part04.rs
@@ -101,11 +101,12 @@ fn shared_ref_demo() {
 //@ There is a second way to borrow something, a second kind of reference: The *mutable reference*.
 //@ This is a reference that comes with the promise that nobody else has *any kind of access* to
 //@ the referee - in contrast to shared references, there is no aliasing with mutable references.
 //@ There is a second way to borrow something, a second kind of reference: The *mutable reference*.
 //@ This is a reference that comes with the promise that nobody else has *any kind of access* to
 //@ the referee - in contrast to shared references, there is no aliasing with mutable references.

-//@ It is thus always safe to perform mutation through such a reference.
-//@ Because there cannot be another reference to the same data, we could also call it a *unique* reference, but that is not their official name.
+//@ It is thus always safe to perform mutation through such a reference. Because there cannot be
+//@ another reference to the same data, we could also call it a *unique* reference, but that is not
+//@ their official name.

 
 //@ As an example, consider a function which increments every element of a vector by 1.
 
 //@ As an example, consider a function which increments every element of a vector by 1.

-//@ The type `&mut Vec<i32>` is the type of mutable references to `vec<i32>`. Because the reference
+//@ The type `&mut Vec<i32>` is the type of mutable references to `Vec<i32>`. Because the reference

 //@ is mutable, we can use a mutable iterator, providing mutable references to the elements.
 fn vec_inc(v: &mut Vec<i32>) {
     for e in v.iter_mut() {
 //@ is mutable, we can use a mutable iterator, providing mutable references to the elements.
 fn vec_inc(v: &mut Vec<i32>) {
     for e in v.iter_mut() {