Jackson custom deserializer for one field with polymorphic types

Jackson processes @JsonTypeInfo before choosing which Deserializer to use, probably because the choice of Deserializer could depend generally on the type. However, you can easily disable this on a per-field basis the same way you specify custom Deserializer – by annotating the field directly: @JsonDeserialize(using = DefinitionDeserializer.class) @JsonTypeInfo(use = JsonTypeInfo.Id.NONE) private Definition definition;

Can I make Json.net deserialize a C# 9 record type with the “primary” constructor, as if it had [JsonConstructor]?

Firstly, you only have to do this when you create your own constructors. This is due to the fact that on instantiation it won’t know which one to use. Secondly, note that (by default) the deserializer will use the property and constructor names and overwrite the ones you omit in the actual constructor type. Furthermore, … Read more

CMake not generating compile_commands.json

This ended up being an issue with using an old version of CMake. I ended up installing the newest version and it worked as expected. According to Clang docs “Currently CMake (since 2.8.5) supports generation of compilation databases for Unix Makefile builds (Ninja builds in the works) with the option CMAKE_EXPORT_COMPILE_COMMANDS.”

How can an arbitrary json structure be deserialized with reqwest get in Rust?

You can use serde_json::Value. #[tokio::main] async fn main() -> Result<(), Box<dyn std::error::Error>> { let resp = reqwest::get(“https://httpbin.org/ip”) .await? .json::<serde_json::Value>() .await?; println!(“{:#?}”, resp); Ok(()) } You will have to add serde_json to your Cargo.toml file. [dependencies] … serde_json = “1”

.NET Deserializing JSON to multiple types [duplicate]

I think it’s likely you’ll need to deserialize the Json then construct the objects from there. Deserializing directly to Cat or Dog won’t be possible as the deserializer won’t know how to construct these objects specifically. Edit: borrowing heavily from Deserializing heterogenous JSON array into covariant List<> using JSON.NET Something like this would work: interface … Read more

jQuery recursive iteration over objects

The .find(‘selector’) method is basically a recusive version of .children(), and will find any descendant object that matched the selector, as opposed to .children() which only finds objects in the first level of descendants. 2nd EDIT (I phrased badly the first time, and messed up the code a bit!): Ok, I don’t think this functionality … Read more

tech