Learning Rust
Here is a list of a few materials it might be worth going over to get an introduction to Rust:
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The Rust Book is one of the best introductions around and worth working through to understand most of the concepts.
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Rust: A Better C++ Than C++ is a good site for those more familiar with C/C++ covering the differences of Rust`.
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asyncis one of the areas of the language that is still being developed, but is core to the GWR engine. Here is an introductory video covering async, and a more advanced video on async. -
Finally, this is a good video that shows the power of what Rust can do help design a good interface.
It is also worth being aware of The Rust Playground which allows you to play with Rust without installing it locally (like the Godbolt Compiler Explorer).