Compare value from two struct in swift

Question

I have two struct and two arrays corresponding to it and I am trying to compare the two array values and print it in one filtered array i did try and use filter but its giving m

Answer 1

If you're looking to filter oneData to only those elements that have a matching ID field in twoData, you want:

let mainArray = oneData.filter { i in twoData.contains { i.ID == $0.ID } }