Good day, sir or madam!
I have a family of very similar protocols, and, naturally, would like to avoid code duplication by moving the common part to a parent like this:
public protocol EntityProcessor<T> { associatedtype T: Entity func insert(_ item: T) throws func delete(_ item: T) throws func update(_ item: T) throws }public protocol ExpenseService: EntityProcessor<Expense> { }public protocol BudgetService: EntityProcessor<Budget> { }And then use them as follows:
public class DataStoreImplementation: ExpenseService & BudgetService { func insert(_ item: Expense) throws { } func insert(_ item: Budget) throws { } // ...}However, the compiler can't figure it out as it can't have multiple different values for T in a conforming type.
Is there a proper way to implement this idea with similar brevity?
