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//https://developer.apple.com/documentation/uikit/uitableviewdelegate/selecting_multiple_items_with_a_two-finger_pan_gesture

//CollectionViewCell.swift
//=====================
/*
See LICENSE folder for this sample’s licensing information.

Abstract:
A custom collection view cell that `CollectionViewController` displays.
*/

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//
//  DouYinVideoParser.swift
//  Transformer
//
//  Created by Forever Positive on 2021/2/15.
//

import Foundation
class DouYinVideoDownloader:NSObject,URLSessionTaskDelegate {
    

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//
//  Collection+SF.swift
//  PanoAI
//
//  Created by Forever Positive on 2021/1/30.
//

import Foundation

extension Array where Element == Optional<Any>{

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import UIKit
extension UIRefreshControl {
    func beginRefreshingManually(_ tintColor:UIColor) {
        self.tintColor = tintColor
        if let scrollView = superview as? UIScrollView {
            scrollView.setContentOffset(CGPoint(x: 0, y:scrollView.contentOffset.y - frame.height), animated: false)
        }
        beginRefreshing()
        self.sendActions(for: .valueChanged)
        

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  let targetWidth = self.view.bounds.size.width;
        let targetSize = CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height)
        //如果headView中有通过aspect ratio决定高度的constraint,这将导致systemLayoutSizeFittingSize计算错误，所以在代码中把这种constraint转为固定高度的constraint
        //see : https://stackoverflow.com/questions/44801492/systemlayoutsizefitting-ignoring-layout-constraints-and-using-image-view-intrins
        let imageView = self.empyHeadView.subviews.last!
        imageView.constraintWithIdentifier("heightConstraint")!.constant = (targetWidth - 40) * CGFloat(0.3);
        //宽度固定，高度可变
        let resultSize =  self.empyHeadView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: UILayoutPriority.defaultHigh, verticalFittingPriority:UILayoutPriority.fittingSizeLevel );
        
        //set

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extension UIView {
    func findDescendantViewsOfType<T: Any>(_ subViewType:T.Type) -> [T]{
        var rs = [T]()
        if self is T {
            rs.append(self as! T)
        }
        for view in self.subviews {
            rs.append(contentsOf: view.findDescendantViewsOfType(T.self))
        }

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//
//  UIView+SF.swift
//  WechatTail
//
//  Created by CHENWANFEI on 2019/9/22.
//  Copyright © 2019 SwordFish. All rights reserved.
//

import UIKit

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let query = NSMetadataQuery();
query.searchScopes = ["/work/books"]
query.predicate = NSPredicate(format: "kMDItemFSName like %@", "NSHipster - Cocoa & Swift.pdf")
NotificationCenter.default.addObserver(forName: NSNotification.Name.NSMetadataQueryDidFinishGathering, object: query, queue: nil) { (_) in
    print("count = \(query.resultCount)")
    if let items = query.results as? [NSMetadataItem]{
        for item in items{
            if let path = item.value(forKey: NSMetadataItemPathKey) as? String{
                 print(path)
            }

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//
//  UIViewController+SF.swift
//  BowenEdu
//
//  Created by CHENWANFEI on 2018/8/21.
//  Copyright © 2018 swordfish. All rights reserved.
//

import UIKit
extension UIViewController{

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import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;