int | missing | absent

[Jesse Phillips]

On Wednesday, 22 June 2022 at 01:09:22 UTC, Steven Schveighoffer 
wrote:

> There are 3 situations:
>
> 1. field in json and struct. Obvious result.
> 2. field in json but not in struct.
> 3. field in struct but not in json.

I do a lot of reading JSON data in C#, and I heavily lean on 
optional over required.

The reason optional is so beneficial is because I'm looking to 
pull out specific data points from the JSON, I have no use nor 
care about any other field. If I had to specify every field being 
provided, every time something changes, the JSON parser would be 
completely unusable for me.

I do like the @extra assuming it allows reserializing the entire 
JSON object. But many times that data just isn't needed and I'd 
like my type to trim it.