Expressing L-systems in Rust

Just sent a couple of pull requests to make this run on stable Rust 1.0.0 (using swaps instead of the unstable drain feature), and to clarify that production rules shouldn&#x27;t be able to mutate their environment (they should be pure functions). Great library, and a good introduction to how Rust&#x27;s typing can make algorithm implementations a pleasure to read in code!<p>EDIT: Links for the curious: <a href="https:&#x2F;&#x2F;github.com&#x2F;atheriel&#x2F;lsystem&#x2F;pull&#x2F;2" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;atheriel&#x2F;lsystem&#x2F;pull&#x2F;2</a> <a href="https:&#x2F;&#x2F;github.com&#x2F;atheriel&#x2F;lsystem&#x2F;pull&#x2F;3" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;atheriel&#x2F;lsystem&#x2F;pull&#x2F;3</a>

&gt; I didn’t really want to write any graphics code, so here’s a way to cheat:<p>I wanted to try out Rust maybe a year ago, was thinking of writing a simple terminal app and found out that there was no way to do simple 2D graphics in Rust. Has the situation changed?

Very cool, L-systems are fascinating.<p>As an apropos, there was actually released a Rust implementation of Turtle graphics recently:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;Kingdread&#x2F;Rurtle" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Kingdread&#x2F;Rurtle</a>