NickHung1982

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell",for: indexPath) as! CustomCell
        
        let postitem = postAr[indexPath.row]
        cell.lb_date.text = postitem.Msg_date
        cell.userName.text = postitem.Msg_username
        cell.userThumb.sd_setImage(with: URL(string: postitem.Msg_userThumb))
  
        //Here is how we deal with image

NickHung1982

 DispatchQueue.global(qos: .background).async {
        //running background
        
        DispatchQueue.main.async {
            // Go back to the main thread to update the UI
            
        }
  }

NickHung1982

//Tree
class Tree {
    var root: Node?
    func addValue(_ val: Int) {
        let newNode = Node(value: val)
        if self.root == nil {
            print("root value is \(val)")
            self.root = newNode
        }else{
            root?.addNode(newNode)

NickHung1982

//Tree
class Tree {
    var root: Node?
    public func addValue(_ val: Int) {
        let newNode = Node(value: val)
        if self.root == nil {
            print("root value is \(val)")
            self.root = newNode
        }else{
            root?.addNode(newNode)

NickHung1982

//把每個要比較的字sort後比較, 如果相同就放在一起 直到巡覽完全部再存到outPutAr 最後再一起輸出
func groupAnagrams(_ strs: [String]) -> [[String]] {
        var outPutAr = [[String]]()
    
        var compareAr = Set(strs)
        while compareAr.count > 0 {
            let SameAr = returnSameAr(Array(compareAr))
            outPutAr.append(SameAr) //將處理完後的陣列存入 outPutAr
            compareAr.subtract(SameAr) //移除已經加過的陣列元素
        }

NickHung1982

import UIKit

//把每個要比較的字sort後比較, 如果相同就放在一起 直到巡覽完全部再存到outPutAr 最後再一起輸出
func groupAnagrams(_ strs: [String]) -> [[String]] {
        var outPutAr = [[String]]()
    
        var compareAr = Set(strs)
        while compareAr.count > 0 {
            let SameAr = returnSameAr(Array(compareAr))
            outPutAr.append(SameAr) //將處理完後的陣列存入 outPutAr

NickHung1982

   var returnList = [Int]()
    public func separateArray(_ ar:[Any]) {
        for li in ar {
            if li is Int {
                returnList.append(li as! Int)
            }else{
                for element in li as! Array<Any> {
                    if element is Int {
                        returnList.append(element as! Int)
                    }else{

NickHung1982

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        
        //add UIImageView
        customImageView = UIImageView()
        customImageView.translatesAutoresizingMaskIntoConstraints = false
        customImageView.backgroundColor = UIColor.red
        self.addSubview(customImageView)
        

NickHung1982

extension UIImageView {
    func loadImageUsingCache(withUrl urlString : String) {
        let url = URL(string: urlString)
        self.image = nil
        
        // check cached image
        if let cachedImage = imageCache.object(forKey: urlString as NSString) as? UIImage {
            self.image = cachedImage
            return
        }

NickHung1982

        //setup centerY with cell
        //let labelConstraintCenterY = NSLayoutConstraint(item: customLabel, attribute: .centerY, relatedBy: .equal, toItem: self, attribute: .centerY, multiplier: 1, constant: 0)
        //setup uilabel's height is equal 21
        //let labelConstraintHeight = NSLayoutConstraint(item: customLabel, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 21)
        //self.addConstraints([labelConstraintCenterY])
        
        //Update use layout Anchor
        customLabel.centerYAnchor.constraint(equalTo: self.centerYAnchor).isActive = true
        customLabel.heightAnchor.constraint(equalToConstant: 21).isActive = true