odd lambda behavior

Question

I stumbled across this article and found it very interesting, so I ran some tests on my own:

Test One:

List actions = new          


        

Answer 1

Yes.

In Test One the var i is captured in the loop, but i refers to a variable that is effectively declared once outside the loop, so all of the captured lambdas refer to the one variable. By the time you call the actions the value of i is 5 so all of the output is five.

In Test Two the var j is captured in the loop, but in this case j is declared each time inside the loop, so all of the captured lambdas refer to the distinct variables. So calling the lambdas outputs the distinct values.