Question

I have 2 sequences:

l1 = { "a1", "a2"}

l2 = { "b1", "b2"}

I want to return a third sequence:

l3 = { new A {a = "a1", b = "b1"}, new A {a = "a2", b = "b2"}}}

How can I use linq to do so?

Answer 1

You’re looking for the zip operation from functional programming, which takes corresponding elements from two sequences and builds a third sequence containing the matching pairs. In C#, this is implemented using Enumerable.Zip. You can get the specific result you are looking for with

Enumerable.Zip(l1, l2, (elem1, elem2) => new A {a = elem1, b = elem2});