You have a struct "Worker" with method that fetches one worker by id. Write method that will fetch multiple workers by array of ids.

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Anónimo · Accepted Answer

struct Worker {
 func fetch(objectWithId id: String, completion: @escaping (Data) -> Void) { ... }
 }
 extension Worker {
 func fetch(objectsWithIds ids: [String], completion: @escaping ([Data]) -> Void) {
 var dataArr = [Data]()
 for i in ids.count-1 {
 fetch(objectWithId: ids[i]) {
 dataArr.append(Data)
 }
 }
 completion(dataArr)
 }
 }

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