👩💻 staff eng @twitter, before @microsoft @amazon @daisie
🦀 tweet a lot about rust and rust gamedev
✍️ wrote https://t.co/DolyQjGkcZ
Jan 23, 2022 • 12 tweets • 5 min read
🧵 Understanding @rustlang's newtype idiom, when and how to use it. 👇
Let's imagine we are building a mini-database for students and professors, here is our starting point.
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The idea is very simple:
* we keep track of professors using a u32 id
* we keep track of students using a u32 id
We are using a HashMap here, but eventually, this could be a trait with a real database behind it, so the ids are quite important here as this is how we find objects
Iterators are a convenient way to traverse collections. A collection contains multiple elements of the same type (think vector, hashmap, tree, etc.), i.e. it makes sense to traverse it.
Context: I started off with ggez + specs and a very basic understanding of #rustlang and the game I wanted to make. I decided to investigate macroquad+hecs as an alternative and ended up attempting a re-write. This is a thread about my attempt!
✍️ How much did you actually rewrite vs reuse?
I started with an empty main. I asked myself how each thing was implemented before and if it still made sense. I reused some of the components I had from before but I also changed a lot. Some core ideas stayed and some changed.
