Hello everyone!

Since recently I have rejoined Codeforces dev team. I worked on it before but had a break for some years.

There is always a lot of work happening behind the scenes, invisible to the users, but sometimes it is nice to have visible updates on the website.

Today, we have a couple improvements for the comment section.

Changing/cancelling votes

It happens sometimes that you click a wrong button, which can be annoying when voting for comments. Now it is possible to change your vote, or cancel it (but only during the first minute).

Hiding comments

When reading comments it is sometimes useful to hide the comments. Maybe you have already read them, or you don't care about replies to a particular comment. So now you can toggle comment tree visibility with a single click.

If you have an idea of a small and simple improvement for Codeforces, let us know in the comments!