nhatlee

/// https://leetcode.com/problems/merge-sorted-array/description/?envType=study-plan-v2&envId=top-interview-150
/// Input: nums1 = [1,2,3,0,0,0], m = 3, nums2 = [2,5,6], n = 3
/// Output: [1,2,2,3,5,6]
///
///
func merge(_ nums1: inout [Int], _ m: Int, _ nums2: [Int], _ n: Int) {
    var lastIdx = m + n - 1
    var mPointer = m
    var nPointer = n
    while mPointer > 0 && nPointer > 0 {

nhatlee

import SwiftUI
import PlaygroundSupport

struct iPod: View {
    var body: some View {
        VStack(spacing: 40) {
            Screen()
            ClickWheel()
            Spacer()
        }

nhatlee

// Original article here: https://www.fivestars.blog/code/swiftui-hierarchy-list.html

import SwiftUI

struct FileItem: Identifiable {
  let name: String
  var children: [FileItem]?

  var id: String { name }

nhatlee

import Foundation
import XCTest

func checkPhoneWithPatterns(_ phone: String) -> Bool{
    let patterns = [
      "^(840|84|0|)8[0-9]{8}$",
      "(840|84|0|)9\\d{8}",
      "^(840|84|0|)5(2|6|8|9)\\d{7}$",
      "(840|84|0|)7(0|6|7|8|9)\\d{7}",
      "(840|84|0|)3[2-9]\\d{7}"

nhatlee

libdispatch efficiency tips

I suspect most developers are using the libdispatch inefficiently due to the way it was presented to us at the time it was introduced and for many years after that, and due to the confusing documentation and API. I realized this after reading the 'concurrency' discussion on the swift-evolution mailing-list, in particular the messages from Pierre Habouzit (who is the libdispatch maintainer at Apple) are quite enlightening (and you can also find many tweets from him on the subject).

• https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20170828/date.html
• https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20170904/date.html
• https://twitter.com/pedantcoder

My take-aways are:

nhatlee

struct Contact: Decodable, CustomStringConvertible {
    var id: String
    @NestedKey
    var firstname: String
    @NestedKey
    var lastname: String
    @NestedKey
    var address: String

    enum CodingKeys: String, NestableCodingKey {

nhatlee

//------------------------------------------------------------------------
// The SwiftUI Lab: Advanced SwiftUI Animations
// https://swiftui-lab.com/swiftui-animations-part1 (Animating Paths)
// https://swiftui-lab.com/swiftui-animations-part2 (GeometryEffect)
// https://swiftui-lab.com/swiftui-animations-part3 (AnimatableModifier)
//------------------------------------------------------------------------
import SwiftUI

struct ContentView: View {
    

nhatlee

import UIKit
import Photos

/// A class that detects when the user has taken a screenshot and provides it via a delegate callback.

@available(iOS 9.0, *)
open class ScreenshotDetector: NSObject {
    
    /// An error encountered when detecting and retreiving a screenshot.
    public enum Error: Swift.Error {

nhatlee

class Node {
    var data: Int
    var next: Node?
//    init(_ data: Int) {
//        self.data = data
//    }
    
    init?(_ values: Array<Int>) {
        var valuesCopy = values
        if valuesCopy.count == 0 {

nhatlee

import Foundation

class StreamReader {
    let encoding: String.Encoding
    let chunkSize: Int
    let fileHandle: FileHandle
    var buffer: Data
    let delimPattern : Data
    var isAtEOF: Bool = false