Skip to content

Remove repetition #4682

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
RustoMCSpit wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Remove repetition #4682

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 0 additions & 11 deletions src/ch03-05-control-flow.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -348,17 +348,6 @@ for each item in a collection. A `for` loop looks like the code in Listing 3-5.

</Listing>

When we run this code, we’ll see the same output as in Listing 3-4. More
importantly, we’ve now increased the safety of the code and eliminated the
chance of bugs that might result from going beyond the end of the array or not
going far enough and missing some items. Machine code generated from `for`
loops can be more efficient as well because the index doesn’t need to be
compared to the length of the array at every iteration.

Using the `for` loop, you wouldn’t need to remember to change any other code if
you changed the number of values in the array, as you would with the method
used in Listing 3-4.

The safety and conciseness of `for` loops make them the most commonly used loop
construct in Rust. Even in situations in which you want to run some code a
certain number of times, as in the countdown example that used a `while` loop
Expand Down