SergeyPetrachkov

/// Wait for async operation to return value and call callback with the value
/// This class is intended to workaround/simplify async/await + actors isolation
/// https://twitter.com/krzyzanowskim/status/1523233140914876416
private class AsyncWaiter<T> {
    var didReceiveValue: Bool = false
    let value: (T) -> Void
    let operation: () async throws -> T

    init(_ value: @escaping (T) -> Void, operation: @escaping () async throws -> T) {
        self.value = value

SergeyPetrachkov

import Foundation

class Debounce {
    private let queue: DispatchQueue
    private let delay: Double
    private var workItem: DispatchWorkItem?
    private var cancelBlock: (() -> Void)?

    init(queue: DispatchQueue, delay: Double) {
        self.queue = queue

SergeyPetrachkov

import Foundation

class Throttle {
    private let queue: DispatchQueue
    private let delay: Double
    private var delayedBlock: (() -> Void)?
    private var cancelBlock: (() -> Void)?
    private var timer: DispatchSourceTimer?
    private var isReady = true
    private var hasDelayedBlock: Bool { delayedBlock != nil }