ha1f

private extension WKWebView {
    func getUserAgent() async throws -> String? {
        try await withCheckedThrowingContinuation { continuation in
            evaluateJavaScript("navigator.userAgent") { (result, error) in
                if let error {
                    continuation.resume(throwing: error)
                } else if let userAgent = result as? String {
                    continuation.resume(returning: userAgent)
                }
            }

ha1f

extension UIView {
    var recursiveSubviews: [UIView] {
        subviews + subviews.flatMap(\.recursiveSubviews)
    }

    func printViewHierarchy(depth: Int = 0) {
        for subview in subviews {
            print("\(String(repeating: "  ", count: depth))- \(String(describing: type(of: subview)))")
            subview.printViewHierarchy(depth: depth + 1)
        }

ha1f

/// 指定した桁数で2進数を表示する、0埋め
func formatBinary8(_ num: UInt8, digits: Int = 8) -> String {
    let s = String(num, radix: 2)
    return s.count < digits
        ? String(repeating: "0", count: digits - s.count) + s
        : s
}

ha1f

/// パスから末尾の拡張子を取得する
function getFileExtension(path) {
  let splitted= url.split(".");
  return splitted[splitted.length - 1];
}

/// Google Driveのルート直下の指定の名前の
/// フォルダを作成または取得する
function getTargetFolder(folderName) {
  let rootFolder = DriveApp.getRootFolder();

ha1f

import Foundation

final class WeakObject<T: AnyObject> {
    weak var _object: T?

    init(_ object: T) {
        _object = object
    }
}

ha1f

private func _hexString<I: BinaryInteger>(_ value: I) -> String {
    "0x" + String(value, radix: 16)
}

extension Character {
    func hexRepresentation() -> String {
        unicodeScalars
            .map { _hexString($0.value) }
            .joined(separator: ", ")
    }

ha1f

extension AVAsset {
    private func _generator(size: CGSize) -> AVAssetImageGenerator {
        let generator = AVAssetImageGenerator(asset: self)
        generator.maximumSize = size
        generator.appliesPreferredTrackTransform = true
        return generator
    }

    func extractUIImageAsync(size: CGSize) -> Single<UIImage?> {
        let generator = _generator(size: size)

ha1f

public extension KeyedDecodingContainerProtocol {
    func decode<T: Decodable>(forKey key: Key) throws -> T {
        try decode(T.self, forKey: key)
    }

    func decodeSafe<T: Decodable>(forKey key: Key, defaultValue: T) -> T {
        (try? decode(T.self, forKey: key)) ?? defaultValue
    }
}

ha1f

import Foundation

public protocol EmptyInitializable {
    init()
}
extension Int: EmptyInitializable {}
extension String: EmptyInitializable {}
extension Array: EmptyInitializable {}
extension Bool: EmptyInitializable {}

ha1f

//
//  UIKit+lerp.swift
//  ha1f
//

extension CGRect {
    /// 線形補間した中間矩形を返す
    /// - parameter otherRect: 目指す先の矩形
    /// - parameter rate: 0-1の間の値。0なら自分と、1ならotherRectと同じ。
    func lerp(_ otherRect: CGRect, rate: CGFloat) -> CGRect {