Return a list with all duplicates removed. The better solution would be
to use a Set.
[1, 2, 5, 1, 7].reduce([], { (a: [Int], b: Int) -> [Int] in
if a.contains(b) {
return a
} else {
return a + [b]
}
})
// prints: 1, 2, 5, 7
Benedikt Terhechte @terhechte
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