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I'll grant you that Rust is not nearly as ergonomic as Ada in this domain, but doing it manually is fairly easy. Turning it into a library is a bit more complicated - these days, I'd do it with macros. Of course, making sure that the compiler knows about it for optimization purposes would require lots of const generic.

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The real benefit of Adas typing is that it is so easy to utilise often preventing logic errors.

And this is definitely a strong benefit.

The benefit of Rust's typing is that (in the absence of `unsafe` or bugs in the compiler or stdlib), it's a simple theorem prover. Much less powerful than the theorem provers you can use with SPARK, but it's a start :)

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