Deserializing third party types from array

[Charlie-83]

I am working with glm and so want to be able to deserialize things like glm::vec3. The way the documentation suggests would be something like

{
  "x": 1,
  "y": 2,
  "z": 3
}

However, to reduce boiler plate, I would like the following instead:

[1, 2, 3]

I have defined my appropriate from_json function but I now run into an error when running json::parse(file). The error is about a size mismatch between vec3s.

I assume that the parser is trying to interpret things as vec3s that shouldn't be interpreted as vec3s due to my form being more lenient than the suggested form. What I want is for json::parse to work in the "vanilla" way but then to be able to use my from_json function for extracting vec3s from specific places in the JSON later on. In particular, I use a lot of std::vector<glm::vec3> so would like to be able to deserialize these easily and without boilerplate.

What should I do here? Is there a way of doing this or is what I'm trying just a bad idea?

[nlohmann]

Can you please provide example code?

[Charlie-83]

Nvm, something completely unrelated was giving a warning that looked exactly like an error just before this and I assumed it had something to do with the error in the JSON stuff. The actual issue in the JSON stuff was a trailing comma. I'm very impressed by how well this library works