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A comment on The Git source code audit, viewed as a Rust programmer. Parent comment

Re:The Git source code audit, viewed as a Rust programmer by phkahler on Tuesday January 24, 2023 @01:39PM (#34507973)
>> So if your application can work with u32 everywhere (on either 32 bits or 64 bits platforms), you should use u32 and impl Index<u32> on your collection, to avoid the cast.

This seems strange. Why does Rust not automatically use whatever size index you hand it?

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Re:The Git source code audit, viewed as a Rust programmer by db48x on Tuesday January 24, 2023 @02:12PM (#34508546)
Ultimately it is because the Rust developers decided that there would be no implicit conversions. In a lot of cases implicit conversions are convenient, but many people feel that the complexity just isn’t worth it.
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Re:The Git source code audit, viewed as a Rust programmer by Sharlin on Tuesday January 24, 2023 @03:30PM (#34509836)
It’s not out of the question that additional `Index` impls for other integer types could be added to the standard library at some point; the issue is discussed often enough. But it’s not trivial to do because some currently valid code could become ambiguous if impls are added, so some sort of a transition would be required.
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