64 lines
1.6 KiB
Swift
64 lines
1.6 KiB
Swift
//
|
|
// Copyright 2022 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
//
|
|
|
|
import Foundation
|
|
|
|
extension Array {
|
|
/// Analogous to Swift.Collection's built-in `allSatisfy`.
|
|
func anySatisfy(_ predicate: (Element) throws -> Bool) rethrows -> Bool {
|
|
return try first(where: predicate) != nil
|
|
}
|
|
}
|
|
|
|
extension Array {
|
|
func removingDuplicates<T: Hashable>(uniquingElementsBy uniqueValue: (Element) -> T) -> [Element] {
|
|
var result = [Element]()
|
|
var uniqueValues = Set<T>()
|
|
for element in self {
|
|
guard uniqueValues.insert(uniqueValue(element)).inserted else {
|
|
continue
|
|
}
|
|
result.append(element)
|
|
}
|
|
return result
|
|
}
|
|
}
|
|
|
|
extension Array {
|
|
mutating func removeFirst(where predicate: (Element) throws -> Bool) rethrows -> Element? {
|
|
guard let index = try firstIndex(where: predicate) else {
|
|
return nil
|
|
}
|
|
let result = self[index]
|
|
remove(at: index)
|
|
return result
|
|
}
|
|
}
|
|
|
|
public extension Array {
|
|
|
|
/// Returns an array of only non-nil elements.
|
|
func compacted<T>() -> [T] where Element == T? {
|
|
return self.compactMap({ $0 })
|
|
}
|
|
}
|
|
|
|
#if TESTABLE_BUILD
|
|
|
|
public extension Array {
|
|
/// Removes and returns the first element of the array, if there is one.
|
|
///
|
|
/// - Important
|
|
/// This method runs in O(N), and consequently should not be used outside
|
|
/// test code.
|
|
mutating func popFirst() -> Element? {
|
|
let firstElement = first
|
|
self = Array(dropFirst())
|
|
return firstElement
|
|
}
|
|
}
|
|
|
|
#endif
|