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Array extension for swift language usable in iOS to filter/remove duplicated elements based on a predicate
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| /// Remove duplicated elements | |
| extension Array { | |
| /// mutate array by iterating through element and filtering duplicated ones | |
| /// - parameter predicate: the test to check if two elements are a dulication | |
| public mutating func removeDuplicates(_ predicate: (Element, Element) -> Bool) { | |
| self = removeDuplicates(predicate) | |
| } | |
| /// iterating through element and filtering duplicated ones | |
| /// - parameter predicate: the test to check if two elements are a dulication | |
| public func removeDuplicates(_ predicate: (Element, Element) -> Bool) -> [Element] { | |
| var result = [Element]() | |
| for value in self { | |
| if !result.contains(where: { elem -> Bool in | |
| predicate(value, elem) | |
| }) { | |
| result.append(value) | |
| } | |
| } | |
| return result | |
| } | |
| } | |
| extension Array where Element: Equatable { | |
| /// Remove duplicated elements where array is equatable | |
| public mutating func removeDuplicates() { | |
| var result = [Element]() | |
| for value in self { | |
| if !result.contains(value) { | |
| result.append(value) | |
| } | |
| } | |
| self = result | |
| } | |
| } |
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