David Tolnay 2130ba5788
Ignore mismatched_lifetime_syntaxes lint
warning: lifetime flowing from input to output with different syntax can be confusing
       --> serde/src/private/de.rs:266:23
        |
    266 |         fn unexpected(&self) -> Unexpected {
        |                       ^^^^^     ---------- the lifetime gets resolved as `'_`
        |                       |
        |                       this lifetime flows to the output
        |
        = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
        |
    266 |         fn unexpected(&self) -> Unexpected<'_> {
        |                                           ++++

    warning: lifetime flowing from input to output with different syntax can be confusing
      --> serde/src/private/mod.rs:27:35
       |
    27 |     pub fn from_utf8_lossy(bytes: &[u8]) -> Cow<str> {
       |                                   ^^^^^     -------- the lifetime gets resolved as `'_`
       |                                   |
       |                                   this lifetime flows to the output
       |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
       |
    27 |     pub fn from_utf8_lossy(bytes: &[u8]) -> Cow<'_, str> {
       |                                                 +++

    warning: lifetime flowing from input to output with different syntax can be confusing
       --> serde_derive/src/internals/attr.rs:612:23
        |
    612 |     pub fn serde_path(&self) -> Cow<syn::Path> {
        |                       ^^^^^     -------------- the lifetime gets resolved as `'_`
        |                       |
        |                       this lifetime flows to the output
        |
        = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
        |
    612 |     pub fn serde_path(&self) -> Cow<'_, syn::Path> {
        |                                     +++

    warning: lifetime flowing from input to output with different syntax can be confusing
      --> serde_derive/src/internals/case.rs:45:37
       |
    45 |     pub fn from_str(rename_all_str: &str) -> Result<Self, ParseError> {
       |                                     ^^^^                  ---------- the lifetime gets resolved as `'_`
       |                                     |
       |                                     this lifetime flows to the output
       |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
       |
    45 |     pub fn from_str(rename_all_str: &str) -> Result<Self, ParseError<'_>> {
       |                                                                     ++++

    warning: lifetime flowing from input to output with different syntax can be confusing
        --> serde_derive/src/de.rs:3228:13
         |
    3228 |     params: &Parameters,
         |             ^^^^^^^^^^^ this lifetime flows to the output
    3229 | ) -> (
    3230 |     DeImplGenerics,
         |     -------------- the lifetimes get resolved as `'_`
    3231 |     DeTypeGenerics,
         |     -------------- the lifetimes get resolved as `'_`
    3232 |     syn::TypeGenerics,
         |     ----------------- the lifetimes get resolved as `'_`
    3233 |     Option<&syn::WhereClause>,
         |            ----------------- the lifetimes get resolved as `'_`
         |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
         |
    3230 ~     DeImplGenerics<'_>,
    3231 ~     DeTypeGenerics<'_>,
    3232 ~     syn::TypeGenerics<'_>,
         |
2025-06-05 22:11:48 -07:00
2025-01-23 01:41:05 -08:00
2025-03-05 09:51:32 +00:00
2018-11-24 15:53:09 -08:00

Serde Build Status Latest Version serde msrv serde_derive msrv

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


You may be looking for:

Serde in action

Click to show Cargo.toml. Run this code in the playground.
[dependencies]

# The core APIs, including the Serialize and Deserialize traits. Always
# required when using Serde. The "derive" feature is only required when
# using #[derive(Serialize, Deserialize)] to make Serde work with structs
# and enums defined in your crate.
serde = { version = "1.0", features = ["derive"] }

# Each data format lives in its own crate; the sample code below uses JSON
# but you may be using a different one.
serde_json = "1.0"

use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize, Debug)]
struct Point {
    x: i32,
    y: i32,
}

fn main() {
    let point = Point { x: 1, y: 2 };

    // Convert the Point to a JSON string.
    let serialized = serde_json::to_string(&point).unwrap();

    // Prints serialized = {"x":1,"y":2}
    println!("serialized = {}", serialized);

    // Convert the JSON string back to a Point.
    let deserialized: Point = serde_json::from_str(&serialized).unwrap();

    // Prints deserialized = Point { x: 1, y: 2 }
    println!("deserialized = {:?}", deserialized);
}

Getting help

Serde is one of the most widely used Rust libraries so any place that Rustaceans congregate will be able to help you out. For chat, consider trying the #rust-questions or #rust-beginners channels of the unofficial community Discord (invite: https://discord.gg/rust-lang-community), the #rust-usage or #beginners channels of the official Rust Project Discord (invite: https://discord.gg/rust-lang), or the #general stream in Zulip. For asynchronous, consider the [rust] tag on StackOverflow, the /r/rust subreddit which has a pinned weekly easy questions post, or the Rust Discourse forum. 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.


License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Description
Serialization framework for Rust
Readme 13 MiB
Languages
Rust 100%