Question

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How do I add two lists in Linq so addedList[x] = listOne[x] + listTwo[x]?

I have 2 IList objects with equal number of rows

IList<double> A;
IList<double> B;

I am looking to return an IList where i perform a calculation foreach, for simplicity lets assume i just want to add the 2 values A[n] + B[n] for each item in the lists.

How would you do this using LINQ?

Answer 1

Use the Zip extension method:

var result = A.Zip(B, (a, b) => a + b);