Intentional variable shadowing, sorting floats, and other reflections on writing Rust: https://rcoh.me/posts/thoughts-on-rust-a-few-thousand-lines-in/
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My ideal programming language would have an elegant core that makes reading the implementation a joy.
It would also have one intentional wart, so users write code rather than their own implementation.
(Sometimes I wonder if some languages have already taken this approach!)