LightNews — News, ranked by scholars

Feraye

@hare34.bsky.social

Damardan başsan nafile,çünkü çakallık var serde

September 29, 2026 at 5:35 AM

Pepe Ruiz

@pepelomas.bsky.social

Porque para eso PSOE y sumar tendrían que ser valientes serde islzsuierda y saber gobiernar

September 29, 2026 at 12:48 AM

Blueticks

@blueticks.bsky.social

Send WhatsApp from Rust on Your Own Number — One authenticated POST from an async Tokio function on the number you already own, over WhatsApp Web or a hosted gateway, not Meta's Cloud API. Be honest though: Rust's standard library has no…

Full guide → https://blueticks.co/blog/whatsapp-api-rust

Build one reqwest::Client, not one per send

Escape the path, model the null with Option

September 28, 2026 at 7:18 AM

Nacho Collantes

@nacho-mitranes.bsky.social

No sé si te das cuenta que esas noticias a parte de serde hace más de 1 año no tienen mucho fundamento.
Si la cuestión fuera tan mala el producto no se vendería y al revés...pues es el caso: ya casi llegan al 50%
Será que son masoquitas en Suecia. O no vaya

September 28, 2026 at 6:35 AM

Lucretiel

@lucretiel.me

Doesn’t the problem exist in both cases because the keys can be out of order? Or does serde special case kind-first key to avoid buffering the data?

September 27, 2026 at 10:12 PM

Alona

@alona.page

oh hmm wow with the oxide way the version handling can be done nicely by serde as an enum (so the versioned thing doesn’t need to be top-level).

September 27, 2026 at 9:42 PM

rain 🌦️

@sunshowers.io

if you use non-externally-tagged deserialization, serde buffers all the keys, looks for the tag, then forwards the remaining keys to the deserializer. This has a bunch of undesirable consequences, e.g. serde_ignored doesn't produce the right ignored keys

September 27, 2026 at 9:35 PM

rain 🌦️

@sunshowers.io

Friends don't let friends use serde_json::Value as a stepping stone

$Appendix: why not serde_json::Value? For reading versioned data, a naive implementation might do something like: struct ReadEnvelope { version: u32, data: serde_json::Value, } impl ReadEnvelope { fn deserialize_data<T: serde::de::DeserializeOwned>( &self, ) -> Result<T, serde_json::Error> { serde_json::from_value(self.data.clone()) } } But this has a few pitfalls: serde_json::Value has funky behavior around objects in a few different ways. For a payload like {"a":1,"a":2}, serde_json::Value drops the first a and only keeps the last one. This crate lets the deserialized type decide what to do with duplicate keys (a derived Deserialize would typically reject duplicate keys). There is no workaround for this with serde_json::Value. Object key order is only preserved if the preserve_order feature is enabled. This can lead to surprising roundtrip behavior. There are a couple different workarounds, neither of which is satisfying: Enable the preserve_order feature, which affects all other crates in the Cargo dependency graph. Accept that key order might not roundtrip. This feature-flag coupling is hard to explain to users; we can do much better than this. With default features, serde_json::Value cannot represent certain types that serde itself supports deserialization for, such as u128s. Like 1.2 above, turning on arbitrary_precision would fix this, but that is undesirable for the same reasons. If deserialization fails, the error message doesn’t carry a line/column offset. An in-between option is serde_json::value::RawValue, which allows part of a JSON payload to be stored as a string, and addresses points 1 and 2. But for point 3, RawValue produces incorrect line and column offsets on error (the offsets produced are relative to the captured part of the payload, not relative to the full payload). Incorrect values are worse than not having the line and column offsets at all.$

Instead of either option, we perform passes over the underlying JSON directly:

The first pass validates that the JSON is well-formed, and for envelope reads, records which top-level fields are present.
For envelope reads, the second pass reads the version, ignoring the data.
Then, depending on the read method called, we perform one or more deserialization passes through the VersionSet::parse callback.
Why not one streaming pass? Because data could come before version, for example if serde_json::Value is used without preserve_order, or with jq -S.

September 27, 2026 at 8:58 PM

0x4d6165 (Margaret)

@0x4d6165.transfem.social.ap.brid.gy

@insertdomain.name@bsky.brid.gy woe, 50 copies of serde be upon ye

September 27, 2026 at 6:22 PM

dust

@y3l1n4ung.bsky.social

Keep API enum values separate from Dart enum names.

renameAll converts normal values to kebab case.

https://dust-codegen.pages.dev/blog/2026-09-27-enum-json-values/

#Dust #Serde #Dart #CodeGeneration

Dust Serde code snapshot showing enum JSON renames and a skipped enum value

September 26, 2026 at 6:15 PM

Adam Chalmers

@adamchalmers.com

Astra loves to write tests that all your dependencies work how they should. Shhh, Astra, it's fine. Serde is not going to suddenly start including fields that are set to None.

September 22, 2026 at 9:11 PM

Serhii Potapov

@greyblake.bsky.social

Just released nutype 0.8.0: github.com/greyblake/nu...
That supports better integration with third party crates, including serde.
#rustlang #rust #nutype #opensouce

Release Nutype 0.8.0 - attribute passthrough, serde customization and Decimal · greyblake/nutype

What is nutype? Nutype is a Rust proc macro for creating newtypes with guarantees. It adds sanitization and validation to the regular newtype pattern and makes sure those invariants hold whenever a...

github.com

September 20, 2026 at 12:37 PM

deveraux.dev

@deverauxdev.bsky.social

#noobdev

I guess Serde and tokio were a huge part of the spag soup.

Tokio Ive replaced with my own tick sync, but this is honestly progress from this morning when I wanted to die.

Now I can fuckin see shit, I zen.

#buildinpublic.

September 16, 2026 at 10:05 PM

Chao

@temburwan.bsky.social

Her şerde bir hayır olmayabilir

God's Man @godsman.bsky.social · 14d

Bir kapiyi kapatan Allah digerini de pekala kapatabilir. Kapatmamasi icin bi sebep yok.

September 14, 2026 at 9:29 PM

Antoine Büsch

@antoinebusch.dev

Oof, *very* surprising behaviour in `serde-json` that my coworker stumbled upon: github.com/serde-rs/jso...

serde_json accepts arrays as serializing to structs when it shouldn't · Issue #1059 · serde-rs/json

Problem When parsing into a struct with serde_json, I expect it to accept json records with key -> value mappings. However, it appears serde_json also accepts arrays. This is a relatively large iss...

github.com

September 14, 2026 at 4:45 AM

Henning Dekant 📎

@quaxquax.bsky.social

Swift is surprisingly bad at JSON parsing because the underlying Apple standard library has some major issues:
aqb-net.com/reports/comb...

Rust vs Swift & Codable vs serde

aqb-net.com

September 13, 2026 at 1:51 AM

Orual

@nonbinary.computer

you can use use serde to get the Post type out in one go and then you'll get the proper struct. you can also access indexed_at on the PostView wrapper struct, which will be same as the created_at field in the post record 99% of the time.

September 12, 2026 at 7:53 PM

Megumin Maniac

@meguminmaniac.bsky.social

I got hit like this by a certain foundational Rust developer because I complained about something on Twitter that only the developer could implement but ultimately was a simple thing to work around w.r.t. `serde`.

September 12, 2026 at 6:39 PM

Piraye

@gulenyuz.bsky.social

Gençken bodoslama dalmışlığım vardır her şeye. Hatta patronun oğlunu, yakasından tutup, duvara yapıştırmışlığım bile var. Serde Adanalılık var🤣

September 12, 2026 at 5:19 PM

conputer dipshit

@davidcrespo.bsky.social

I'm in heaven. it doesn't even have to do any of the writing, just the stupid bullshit

/prose start with just the title and a permalink to the line range of the definition of the body for the webhook where it's called data

$Screenshot of a browser window showing a markdown editor side by side with its rendered preview: Left pane text: # Rename `alert` field on `Alert` response to `payload` https://github.com/oxidecomputer/omicron/blob/9d95e0cf4542d2bc776c40b69f97ba6e05cff199/nexus/src/app/webhook.rs#L497-L504 Right pane preview: Rename alert field on Alert response to payload omicron/nexus/src/app/webhook.rs Lines 497 to 504 in 9d95e0c 497 #[derive(serde::Serialize, Debug)] 498 struct Payload<'a> { 499 alert_class: AlertClass, 500 alert_version: u32, 501 alert_id: AlertUuid, 502 data: &'a serde_json::Value, 503 delivery: DeliveryMetadata<'a>, 504 }$

September 11, 2026 at 7:03 PM

dust

@y3l1n4ung.bsky.social

Flutter’s current full-stack developer series is a useful frame for Dust too.

The repeated work is often not one widget. It is the path between the form, request model, API call, state updat…

https://dust-codegen.pages.dev/blog/2026-09-11-signup-flow-tutorial/

#Dust #Validation #Serde #HTTPClient

September 10, 2026 at 6:01 PM

Funda Diken

@fundadiken.bsky.social

Teşekkür ederim. O iş olmadı. Kısmet diyelim. Yarın iki görüşmeye gideceğim. Her şerde vardır bir hayır🙏🏻

September 8, 2026 at 2:31 PM

Nathan Douglas

@tenesm.us

My main personal project right now has almost no package dependencies aside from a couple things I just flat-out don't care to implement "myself" - BTreeMap, Serde. Part of this might be that it's an idiosyncratic project, but it's also occurred to me that a lot of dependencies just don't seem...

September 7, 2026 at 3:17 PM