@swiftbot
extension Collection { func indexed() -> [(Index, Element)] { return indices.map { ($0, self[$0]) } } } let a = ["a", "b", "c", "d", "e", "f", "g"] var b = a[2...4] print(Array(b.indexed())) _ = b.popLast() b.append("e") print(Array(b.indexed())) _ = b.popFirst() b.insert("c", at: 3) print(Array(b.indexed()))
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