Skip default values on serialization

[oleid]

Now that glaze supports TOML, I was thinking about using it to create config files.
That works nicely, as expected. Yet, one thing could be improved IMHO.
Similarly to skipping NULL values, I would find it desirable to skip the default values of a struct on serialization.

Is this already possible? I couldn't find anything, but maybe I'm overlooking something.

So essentially, what I'm talking about:

struct Config
{
    std::string host{"localhost"};
    unsigned port{1234};
};

Is currently serialized as

host = "localhost"
port = 1234

But I'm looking for:

And if port number 4242 was specified, it should get serialized as:

port = 4242