Rust serde

Serde provides rust serde derive macro to generate implementations of the Serialize and Deserialize traits for data structures defined in your crate, allowing them to be represented conveniently in all of Serde's data formats.

A data structure that can be serialized into any data format supported by Serde. Serde provides Serialize implementations for many Rust primitive and standard library types. The complete list is here. All of these can be serialized using Serde out of the box. See the derive section of the manual for how to use this. In rare cases it may be necessary to implement Serialize manually for some type in your program.

Rust serde

Serde is a framework for ser ializing and de serializing Rust data structures efficiently and generically. The Serde ecosystem consists of data structures that know how to serialize and deserialize themselves along with data formats that know how to serialize and deserialize other things. Serde provides the layer by which these two groups interact with each other, allowing any supported data structure to be serialized and deserialized using any supported data format. Where many other languages rely on runtime reflection for serializing data, Serde is instead built on Rust's powerful trait system. A data structure that knows how to serialize and deserialize itself is one that implements Serde's Serialize and Deserialize traits or uses Serde's derive attribute to automatically generate implementations at compile time. This avoids any overhead of reflection or runtime type information. In fact in many situations the interaction between data structure and data format can be completely optimized away by the Rust compiler, leaving Serde serialization to perform the same speed as a handwritten serializer for the specific selection of data structure and data format. The following is a partial list of data formats that have been implemented for Serde by the community. Out of the box, Serde is able to serialize and deserialize common Rust data types in any of the above formats. In addition, Serde provides a derive macro to generate serialization implementations for structs in your own program. Using the derive macro goes like this:. Overview Help Serde data model Using derive Attributes Container attributes Variant attributes Field attributes Custom serialization Implementing Serialize Implementing Deserialize Unit testing Writing a data format Conventions Error handling Implementing a Serializer Implementing a Deserializer Deserializer lifetimes Examples Structs and enums in JSON Enum representations Default value for a field Struct flattening Handwritten generic type bounds Deserialize for custom map type Array of values without buffering Serialize enum as number Serialize fields as camelCase Skip serializing field Derive for remote crate Manually deserialize struct Discarding data Transcode into another format Either string or struct Convert error types Custom date format No-std support Feature flags.

Picklea format common in the Python world.

Serde is a framework for ser ializing and de serializing Rust data structures efficiently and generically. Serde is one of the most widely used Rust libraries so any place that Rustaceans congregate will be able to help you out. It's acceptable to file a support issue in this repo but they tend not to get as many eyes as any of the above and may get closed without a response after some time. Skip to content. You signed in with another tab or window.

JSON is a ubiquitous open-standard format that uses human-readable text to transmit data objects consisting of key-value pairs. 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. 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. The Value representation is sufficient for very basic tasks but can be tedious to work with for anything more significant. Error handling is verbose to implement correctly, for example imagine trying to detect the presence of unrecognized fields in the input data. The compiler is powerless to help you when you make a mistake, for example imagine typoing v["name"] as v["nmae"] in one of the dozens of places it is used in your code. Once we have p of type Person , our IDE and the Rust compiler can help us use it correctly like they do for any other Rust code. And the Rust compiler can check that when we write p. Serde JSON provides a json!

Rust serde

Serialize and deserialize this field with the given name instead of its Rust name. This is useful for serializing fields as camelCase or serializing fields with names that are reserved Rust keywords. Deserialize this field from the given name or from its Rust name.

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Latest commit History 3, Commits. Feb 20, URL query strings, in the x-www-form-urlencoded format. This avoids any overhead of reflection or runtime type information. This trait is not object safe. In fact in many situations the interaction between data structure and data format can be completely optimized away by the Rust compiler, leaving Serde serialization to perform the same speed as a handwritten serializer for the specific selection of data structure and data format. Using the derive macro goes like this:. You may be depending on serde 1. On rare occasions, for an especially convoluted type you may need to implement the traits manually. This removes one level of structure between the serialized representation and the Rust data structure representation.

Serde provides a derive macro to generate implementations of the Serialize and Deserialize traits for data structures defined in your crate, allowing them to be represented conveniently in all of Serde's data formats. You only need to set this up if your code is using [derive Serialize, Deserialize ].

This impl requires the "rc" Cargo feature of Serde. Serialization framework for Rust serde. This removes one level of structure between the serialized representation and the Rust data structure representation. Available on crate feature std and Unix or Windows only. This almost always means that you are using libraries that depend on incompatible versions of Serde. Bencode , a simple binary format used in the BitTorrent protocol. Serde is a framework for ser ializing and de serializing Rust data structures efficiently and generically. Using derive Serde provides a derive macro to generate implementations of the Serialize and Deserialize traits for data structures defined in your crate, allowing them to be represented conveniently in all of Serde's data formats. See the Implementing Serialize section of the manual for more about this. Available on crate feature unstable only.