this post was submitted on 30 Jun 2024
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Rust has perfectly fine tools to deal with such issues, namely enums. Of course that cascades through every bit of related code and is a major pain.
Sadly it doesn't fix the bad documentation problem. I often don't care that a field is special and either give a string or number. This is fine.
What is not fine, and which should sentence you to eternal punishment, is to not clearly document it.
Don't you love when you publish a crate, have tested it on thousands of returned objects, only for the first issue be "field is sometimes null/other type?". You really start questioning everything about the API, and sometimes you'd rather parse it as
serde::Value
and call it a day.API is sitting there cackling like a mad scientist in a lightning storm.
True, and also true.