57 lines
1.9 KiB
Swift
57 lines
1.9 KiB
Swift
// The MIT License (MIT)
|
|
// Copyright © 2017 Ivan Vorobei (hello@ivanvorobei.by)
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
import Foundation
|
|
|
|
extension Array {
|
|
|
|
func takeElements(count: Int) -> Array {
|
|
if (count < self.count) {
|
|
return Array(self[0..<count])
|
|
}
|
|
return Array(self)
|
|
}
|
|
}
|
|
|
|
extension Array where Element: Equatable {
|
|
|
|
mutating func removeDuplicates() {
|
|
var result = [Element]()
|
|
|
|
for value in self {
|
|
if result.contains(value) == false {
|
|
result.append(value)
|
|
}
|
|
}
|
|
self = result
|
|
}
|
|
}
|
|
|
|
extension Array where Element: Hashable {
|
|
|
|
func after(item: Element) -> Element? {
|
|
if let index = self.index(of: item), index + 1 < self.count {
|
|
return self[index + 1]
|
|
}
|
|
return nil
|
|
}
|
|
}
|