Filter by multiple array conditions

Question

The filter method is a really powerful tool for filtering by single or multiple conditions, but is there a way to filter by conditions of arrays?

class

Answer 1

Forget about the filter for a moment. Think how you would check if a car's color is a value in an array.

let colors = [ "Green", "Blue" ]
// or let colors: Set = [ "Green", "Blue" ]
if colors.contains(someCar.color) {
}

Simple enough. Now use that same simple expression in the filter.

let filterdObject = cars.filter { $0.model == currModel || colors.contains($0.color) }