serde-rs/json

Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.

JSON is a ubiquitous open-standard format that uses human-readable text to transmit data objects consisting of key-value pairs.

There are three common ways that you might find yourself needing to work with JSON data in Rust.

Serde JSON provides efficient, flexible, safe ways of converting data between each of these representations.

Any valid JSON data can be manipulated in the following recursive enum representation. This data structure is serde_json::Value.

A string of JSON data can be parsed into a serde_json::Value by the serde_json::from_str function. There is also from_slice for parsing from a byte slice &[u8] and from_reader for parsing from any io::Read like a File or a TCP stream.

The result of square bracket indexing like v["name"] is a borrow of the data at that index, so the type is &Value. A JSON map can be indexed with string keys, while a JSON array can be indexed with integer keys. If the type of the data is not right for the type with which it is being indexed, or if a map does not contain the key being indexed, or if the index into a vector is out of bounds, the returned element is Value::Null.