I designed CrabBake for this use case (docs.google.com/document/d/1โ€ฆ) but this trick is definitely cooler and imposes less of a burden on the compiler bit of a cross-platform hazard though

[Design Doc] CrabBake: Serializing to Rust codegen

CrabBake: Serializing to Rust codegen Summary: Design for rust crate that allows codegenning types to zero cost static/const rust code constructors Author: Audience: ICU4X Engineers (Public) Status:...

docs.google.com
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(crabbake "serializes to const", which for a large object graph can mean a lot of const code to parse and compile, which isn't bad but can be slow)
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Replying to @ManishEarth
I take it that serialising to data structure constructors wasn't possible due to privacy etc?

Jan 31, 2022 ยท 4:27 PM UTC

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Replying to @dsilverstone
It can serialize to data structure constructors, it's up to individual data structures to pick how they can be constructed here, not all of them have easily const ways of constructing as the default
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aah I see - nice to have that flexibility.
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