Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.
Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.
Questions tagged [serde]
839 questions
0
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0 answers
How do I implement Serialize and Deserialize if I already have conversions to and from serde-json Value?
Serialization and deserialization for most of my structs and enums can be easily implemented using #[derive(Serialize, Deserialize)].
A few structs require careful crafting to implement. I am new to serde. I succeeded in implementing the From trait…
Paul Chernoch
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0
votes
1 answer
How do I modify the JSON output for a Result serialized with serde?
A simple code:
use serde::Serialize;
#[derive(Serialize)]
struct MyStruct {
foo: Result
}
fn main() {
let m = MyStruct {
foo: Ok(43)
};
let n = MyStruct {
foo: Err("oh no!".into())
};
…
jeanpaul62
- 9,451
- 13
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- 94
0
votes
1 answer
Parsing file returns error "thread 'main' panicked"
I'm struggling with serde-xml-rs and hope someone can help me out. I've been able to parse a single "pet" from the sample XML below. But, when I try to parse a file with two "pet" entries under "pets", as illustrated below, I get the error "thread…
ghoetker
- 161
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- 9
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1 answer
Can't use locally created vector because "borrowed"
I can't get first element of the vector because of the error and can't change struct design either. I tried borrowing but struct expects a ExtrudeGeometry.
#[wasm_bindgen]
pub fn toCollection(arr: js_sys::Array, r_type: String) -> JsValue {
let…
mertselimb
- 167
- 7
0
votes
3 answers
How to efficiently extract a portion of JSON as a Vec without intermediate structs?
I have JSON content where, deeply nested, there is an array of numbers I want to extract. I'd like to not create the intermediate structs, so I tried the following:
... get f
let json = serde_json::from_reader::<_, serde_json::Value>(f)?;
let xs:…
Listerone
- 1,381
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- 25
0
votes
1 answer
De-serializing request and response with rust serde
I am trying to de/serialize request and response on server/client side. Below is my what I have tried :-
use std::collections::HashMap;
use std::fmt;
use std::io::prelude::*;
use std::net::TcpStream;
use serde_derive::{Deserialize,…
ravi
- 10,994
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- 36
0
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1 answer
Deserialize XML with multiple schema structures
How can I deserialize an XML-string (using serde derive) returned by an API that might have different children?
If I call an API it might return one of the following result sets:
use serde::Deserialize;
use serde_xml_rs::from_str;
#[derive(Debug,…
rideron89
- 491
- 3
- 14
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0 answers
How do I generate a TOML file with placeholder lines showing all missing values using Serde?
I want the Serde serializer to write empty values to the TOML output. The result is a configuration file so it would be great if I could include empty keys so the user sees that the option is available.
struct X {
attr: Option,
}
should…
Bomgar
- 553
- 1
- 3
- 13
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0 answers
How to express this TOML format in Serde
I have a Rust structure that I can deserialize:
pub struct ProcessReference {
pub alias: Name,
pub source: String,
#[serde(rename = "input")]
pub initializations: Option>,
}
where input is optional. This…
Andrew Mackenzie
- 5,477
- 5
- 48
- 70
0
votes
1 answer
How to deserialize XML to different structs based on tag name using serde_xml_rs?
I am using serde-xml-rs for easy information transfer that I or anyone else can change later without having to code in Rust.
It looks something like this:
1
…
Andrew Chon
- 103
- 1
- 1
- 5
0
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1 answer
Is it possible to deserialize data that looks like JSON (but isn't) using serde_json?
I have a hard time deserializing (using Rust's serde and serde_json v1.0) the following JSON I receive:
{
["string content"]
}
The object's array is not identified by a key, so the following doesn't work:
#[derive(Deserialize)]
struct Data {
…
big_gie
- 2,829
- 3
- 31
- 45
0
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0 answers
Rust serde_json serializer for pretty print of [u8; 32]
I want to get the pretty print in Rust for [u8; 32], with serde_json, but can't make it work. I know if the following struct is a (Vec), that works, as this playground code. But I have to keep the ([u8; 32]) struct because it's everywhere in an…
gary
- 1,569
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0 answers
How to use EnumAccess in Serde?
I am deserializing a externally coded enum for Avro. I have created an enum which matches it schema and I don't know how to take the variant identifer (a number) and choose the proper enum variant.
The target struct:
#[derive(Deserialize,…
xrl
- 2,155
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0
votes
1 answer
How to add an additional data point to an instance of a struct when writing it to a file with Serde?
A Person has a first_name and a last_name. How do I add a time of export to a CSV when writing an instance of Person to a CSV?
#[macro_use]
extern crate serde_derive;
extern crate csv;
extern crate serde;
use std::time::{SystemTime,…
Greg
- 8,175
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0
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0 answers
Cannot deserialize with Serde: the `?` operator can only be used in a function that returns `Result`
I'm trying to deserialize a json string to a struct but I'm having trouble with getting it to work. All I want to do is print out the status and or result of the first one to match run["meta"]["username"] against a given username.
However despite…
Thermatix
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