Robert MacEachern robmaceachern
DougGregor
/ parallel_map.swift
Created
December 24, 2020 01:10
Swift async/await implementation of a parallel map
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| extension Collection { | |
| func parallelMap<T>( | |
| parallelism requestedParallelism: Int? = nil, | |
| _ transform: @escaping (Element) async throws -> T | |
| ) async throws -> [T] { | |
| let defaultParallelism = 2 | |
| let parallelism = requestedParallelism ?? defaultParallelism | |
| let n = self.count | |
| if n == 0 { |
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| // by klaytonb | |
| // https://forums.developer.apple.com/forums/thread/699111?answerId=740437022#740437022 | |
| import Combine | |
| import SwiftUI | |
| public extension Publishers { | |
| static var keyboardHeight: AnyPublisher<CGFloat, Never> { | |
| let willShow = NotificationCenter.default.publisher(for: UIApplication.keyboardWillShowNotification) | |
| .map { $0.keyboardHeight } | |
| let willHide = NotificationCenter.default.publisher(for: UIApplication.keyboardWillHideNotification) |
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