Dtype_dispatch: A cursed Rust macro that could save you 1000 LoC

Re:Dtype_dispatch: A cursed Rust macro that could save you 1... by artemonster on Saturday November 16, 2024 @03:28PM (#42159031)

this is an obvious case of battling the type system that just gets in the way. The "before" version obviously sucks, but the "after" with magic sprinkled in - sucks even more! is there an alternative solution?

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Re:Dtype_dispatch: A cursed Rust macro that could save you 1... by smusamashah on Saturday November 16, 2024 @10:45PM (#42161833)

I dont understand what's going on but it looks like a hack to avoid code duplication. We should be OK with duplication sometimes because it's more explicit and straightforward to mingle and debug.

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Re:Dtype_dispatch: A cursed Rust macro that could save you 1... by ValentinA23 on Sunday November 17, 2024 @07:56AM (#42163963)

>In Pcodec I now have 9 data types and 47 matches

So 9 * 47 - 47 = 376 lines the author got rid of ? Which would imply that if he adds a tenth datatype, he doesn't have to update 47 match blocks sprinkled over the whole code base ?

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