Added exemplary unit test for iter_mut().

[rust-101.git] / src / part13.rs

diff --git a/src/part13.rs b/src/part13.rs
index 7aedb71493dbc1f229d79ad8cd468bea1eb96bec..054a0061b1edcac983ccf12acc7fffaede5115d6 100644 (file)
--- a/src/part13.rs
+++ b/src/part13.rs
@@ -13,7 +13,7 @@ use std::sync::Arc;
 //@ pitfall of concurrent programming: data races. We will see how that works concretely.
 
 // Before we come to the actual code, we define a data-structure `Options` to store all the information we need
-// to complete the job: Which files to work on, which pattern to look for, and how to output. <br/>
+// to complete the job: Which files to work on, which pattern to look for, and how to output.
 //@ Besides just printing all the matching lines, we will also offer to count them, or alternatively to sort them.
 #[derive(Clone,Copy)]
 pub enum OutputMode {
@@ -159,8 +159,8 @@ pub fn main() {
 //@ programs memory safe, and that prevents us from invalidating iterators, also helps secure our multi-threaded code against
 //@ data races. For example, notice how `read_files` sends a `String` to `filter_lines`. At run-time, only the pointer to
 //@ the character data will actually be moved around (just like when a `String` is passed to a function with full ownership). However,
-//@ `read_files` has to *give up* ownership of the string to perform `send`, to it is impossible for an outstanding borrow to
-//@ still be around. After it sent the string to the other side, `read_files` has no pointer into the string content
+//@ `read_files` has to *give up* ownership of the string to perform `send`, to it is impossible for the string to still be borrowed.
+//@ After it sent the string to the other side, `read_files` has no pointer into the string content
 //@ anymore, and hence no way to race on the data with someone else.
 //@ 
 //@ There is a little more to this. Remember the `'static` bound we had to add to `register` in the previous parts, to make
@@ -189,4 +189,4 @@ pub fn main() {
 //@ So if the environment of your closure contains an `Rc`, it won't be `Send`, preventing it from causing trouble. If however every
 //@ captured variable *is* `Send`, then so is the entire environment, and you are good.
 
-//@ [index](main.html) | [previous](part12.html) | [raw source](https://www.ralfj.de/git/rust-101.git/blob_plain/HEAD:/workspace/src/part13.rs) | [next](part14.html)
+//@ [index](main.html) | [previous](part12.html) | [raw source](workspace/src/part13.rs) | [next](part14.html)