LINQ - Does the Where expression return new instance or reference to object instance

Question

This is probably a basic question for some, but it affects how I design a piece of my program.

I have a single collection of type A:

IEnumerable         


        

Answer 1

I just wanted to add to some of the other answers -- in general, when I'm not sure of something but require a particular behavior, I'll add a unit test for it. You could easily put this into a test and then check for equality, which will tell you if you're looking at a reference of the object in the original container. Some may argue that this is stupid because you "should just know" what happens, but for me I know I will either be 1) unsure because I'm not an awesome programmer, and 2) there are always nights where I have to burn the midnight oil, and it's good to have the reassurance that something behaves as you need it to.