Question

I have the following two lists:

IEnumerable<bool> a =      True True True False
List<bool> b = True True False False

I need to create another list that shows true if the element of list a and list b match. List a and b will always be populated and have the same number of elements. So for example the output would be:

List<bool> c = True True False True

Is there a simple way I can do this? Would I have to use LINQ? I guess I could do it be iterating through an array but I am hoping there’s a simpler way.

Answer 1

If you’re using .NET 4, you can use LINQ through IEnumerable.Zip to “zip” the two lists together into a third result list. Zip operates on coordinating elements in both lists to produce a third list.

The second parameter is a function defining what you want to do with each pair of elements.

var c = a.Zip(b, (p, q) => p == q).ToList();