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Rust
Untyped JSON with serde_json::Value
When you don't know the JSON shape up-front, parse into `serde_json::Value` and navigate via index / get(). Type-safe pattern matching converts back to Rust types.
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Rust
Serde — Field Rename, Skip, and Tagging
Per-field attributes let you map between Rust's snake_case and the JSON's camelCase, skip optional fields, and tag enum variants the way external APIs expect.
Rust
CSV Read/Write with the csv Crate
`csv` + `serde` lets you read/write CSVs directly into typed structs. No manual field parsing; column order tolerant via headers.