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There are anonymous types for intermediate results in the linq stream. And since they are anonymous types you need the c var keyword when working with the outco
by oaiey 5y ago
There are anonymous types for intermediate results in the linq stream. And since they are anonymous types you need the c
var keyword when working with the outcome.
- pipeline_peak 5y ago….All these years and I’ve never known about Anonymous types. I know about records and dynamic objects. I’m guessing they aren’t used often because I have yet to find them.
- caseymarquis 5y agoLINQ GroupBy() is the most common use I can think of. I would definitely look into that as it's a nice tool to have. Otherwise, keep them in mind if you're ever pulling data from an external source (SQL, JSON, GQL, Redis, etc) and you're annoyed about having to make a class for some trivial operation. If a library doesn't have an API for using them with generics, you can paper over that with: T fn<T>(T throwAway) => Library.Deserialize<T>();
- to11mtm 5y agoAnother example of Anonymous types would be a simple .Select(x=> new {x.ID, x.Name}); Sometimes people lump these in with dynamic objects but those are a very different class of thing indeed. Now, what would be -really- nice is if we had a way to specify that an anonymous type implements an interface. That could potentially simplify a -lot- of DTO modeling.