Update nested array element if exists

Question

The following code works great in that it finds if I have an element within a nested array. If such an element does not exist the code inserts it.

I'm struggling to find a way to remove an existing element if it already exists so I can then insert an updated version of it.

Perhaps there is even a better way to just update the existing element without removing it first?

if insertSolution.contains(where: { $0.resourceName == name }) {
  //remove $0
  //insert new resource
  print("Already inserted. Update needed!")
} else {
  insertSolution.append(solution);
  print("New solution. Insert needed!");
}

does the job developer.apple.com/documentation/swift/array/… — Shehata Gamal
– Shehata Gamal, Commented Oct 26, 2018 at 12:16

Martin R · Accepted Answer · 2018-10-26 12:13:49Z

1

You can determine the index of an existing element, and update that element if it exists, otherwise append:

if let idx = insertSolution.firstIndex(where: { $0.resourceName == name }) {
    // Update existing element:
    insertSolution[idx] = ...
} else {
    // Append new element:
    insertSolution.append(...);
}

answered Oct 26, 2018 at 12:13

Martin R

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