Andy0570

import Foundation

extension String {
    
    // MARK: 计算字符串的 MD5 哈希值
    var md5: String? {
        let length = Int(CC_MD5_DIGEST_LENGTH)
        
        guard let data = self.data(using: String.Encoding.utf8) else { return nil }
        

Andy0570

import Foundation

extension String {
    init?(json: Any) {
        guard let data = Data(json: json) else { return nil }
        self.init(decoding: data, as: UTF8.self)
    }
    
    func jsonToDictionary() -> [String: Any]? {
        self.data(using: .utf8)?.jsonToDictionary()

Andy0570

import Foundation

extension Data {
    init?(json: Any) {
        guard let data = try? JSONSerialization.data(withJSONObject: json, options: .fragmentsAllowed) else { return nil }
        self.init(data)
    }
    
    func jsonToDictionary() -> [String: Any]? {
        (try? JSONSerialization.jsonObject(with: self, options: .allowFragments)) as? [String: Any]

Andy0570

#if os(iOS) || os(tvOS)
import UIKit
typealias UniColor = UIColor
#else
import Cocoa
typealias UniColor = NSColor
#endif

private extension Int {
    func duplicate4bits() -> Int {

Andy0570

import Foundation

extension Int {
    init?(key: String) {
        guard UserDefaults.standard.value(forKey: key) != nil else { return nil }
        self.init(UserDefaults.standard.integer(forKey: key))
    }
    
    func store(key: String) {
        UserDefaults.standard.set(self, forKey: key)

Andy0570

import Foundation

extension URL {
    func withQueries(_ queries: [String: String]) -> URL? {
        var components = URLComponents(url: self, resolvingAgainstBaseURL: true)
        components?.queryItems = queries.compactMap { URLQueryItem(name: $0.0, value: $0.1) }
        return components?.url
    }
}

Andy0570

extension UIImage {
    class func imageWithColor(color: UIColor) -> UIImage {
        let rect: CGRect = CGRect(x: 0, y: 0, width: 1, height: 1)
        UIGraphicsBeginImageContextWithOptions(CGSize(width: 1, height: 1), false, 0)
        color.setFill()
        UIRectFill(rect)
        let image: UIImage? = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        return image!

Andy0570

extension UIColor {
    func image(_ size: CGSize = CGSize(width: 1, height: 1)) -> UIImage {
        return UIGraphicsImageRenderer(size: size).image { (rendererContext) in
            self.setFill()
            rendererContext.fill(CGRect(origin: .zero, size: size))
        }
    }
}