score:0

For Linq Practice

If you want some practice on LINQ with exercises and answers, really easy to set up and, in my opinion, awesome:

https://github.com/walkhard/linq-exercises

Download from git, open in Visual Studio. Your job is to make the tests pass.

[disclosure: i learned some linq from it and I contribute to the project so yeah i think it's an awesome, fast and efficient way to learn.]

score:2

My 2 cents , Read chapters "11 Query expressions and LINQ to Objects" and "12 LINQ beyond collections" in "C# in Depth" book to understand how LINQ works.

score:3

Some caveats about using LINQ to SQL:

Has Microsoft really killed LINQ to SQL?

Is LINQ to SQL DOA?

There's also some controversy about the first version of Entity Framework, including a petition.

score:3

I think, the answer to "What flavors of LINQ are there?" is incomplete. First of all, you can create your own "flavor". Yes, it is an advanced task, but there are a lot of different LINQ implementations now.

Here is the list of existing LINQ providers (plus some more resources on learning LINQ) on Charlie Calvert's blog: Links to LINQ.

And also there is an excellent series of blog posts by Matt Warren on how to create your own LINQ Provider: LINQ: Building an IQueryable provider series

score:4

Get the book Linq in Action it is an easy read for a coding book and really teaches you how to use Linq and the new features of .NET 3.5 some of the cool parts they put in for the language.

score:4

IMHO, an overlooked, but important, benefit is the coding efficiency of LINQ, e.g how much can be accomplished with so little code. I personally find the query syntax easy to read and comprehend.

score:5

A few LINQ Tips:

  • Apply filters before a join to improve query performance
  • Filter LINQ queries using object reference comparison
  • Apply aggregates to empty collections in LINQ to SQL queries
  • Delay loading a property in LINQ to SQL
  • Use table-valued functions with eager loading turned on
  • Put joins in the correct order in a LINQ to Objects query
  • Compose a LINQ query inside a loop

http://www.aspnetpro.com/articles/2009/04/asp200904zh_f/asp200904zh_f.asp

score:7

Mention LINQ to Entities since ADO.NET Entity Framework will be an important .NET module.


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