"LINQ to Objects" (i.e. the set of standard query operators, basically map/filter/fold and sundries) is hugely beneficial and ubiquitous in the recent codebases

"LINQ to Objects" (i.e. the set of standard query operators, basically map/filter/fold and sundries) is hugely beneficial and ubiquitous in the recent codebases I've worked on. LINQ to SQL and similar IQueryable providers can be useful and are used, but unfortunately still suffer from the fact that querying is just one part of an ORM solution, and the state of ORMs in general and Microsoft's in particular is still kind of a mess. I haven't seen huge resistance to adopting them though - using some kind of LINQ-based ORM is pretty standard in ASP.NET MVC projects.