This post is for people who just started with Rust and are not quite sure how the borrowing and lifetime stuff works.

TL;DR After something was moved, it’s gone. Only one mutable reference at a time. Copying might be expensive but is required sometimes.

I started a small HTTP-Server to learn a bit more about Rust. While doing the first few steps I always came across the same few errors and somehow managed to hack my way around them. That wasn’t really satisfying.

While re-reading some chapters for the Rust book about borrowing and lifetimes I finally understood it. I’ll try to explain my view on how it works. …