benigumocom

import Foundation
import SwiftUI
import AVFoundation

struct SystemSoundWheelPicker: View {
  @State private var sounds: [SystemSoundID] = []
  @State private var playingID = -1

  var body: some View {
    Picker("", selection: $playingID) {

benigumocom

import SwiftUI
import AVFoundation

struct TestView: View {
  var body: some View {
    Button("Play1") {
      AudioServicesPlaySystemSound(1000)
    }

    Divider()

benigumocom

@Observable final class Sound: Identifiable {
  var id: SystemSoundID
  var duration: Double
  var playing: Bool

  var valid: Bool { self.duration > 0.01 }

  init(_ id: Int, _ duration: Double, _ playing: Bool) {
    self.id = SystemSoundID(id)
    self.duration = duration

benigumocom

import SwiftUI

@Observable final class ScheduledTimer {
  var elapsed = TimeInterval.zero
  private var timer: Timer?

  func start() {
    timer = Timer.scheduledTimer(withTimeInterval: 0.001, repeats: true) { _ in
      self.elapsed += 0.001
    }

benigumocom

import SwiftUI

struct TestView: View {
  var body: some View {

    VStack {
      Text("top")
      Text("bottom")
    }

benigumocom

import Foundation

// inspiered by
// lifegame/swift/lifegame.swift at master · tex2e/lifegame
// https://github.com/tex2e/lifegame/blob/master/swift/lifegame.swift

@Observable final class LifeGame {
  var field: [[Int]] = []
  var generation = 0
  

benigumocom

let d2: [[String]] = [
  // x (col) →
  ["あ", "い", "う", "え", "お"],
  ["か", "き", "く", "け", "こ"],
  ["さ", "し", "す", "せ", "そ"]
]

print(d2)
// [["あ", "い", "う", "え", "お"], ["か", "き", "く", "け", "こ"], ["さ", "し", "す", "せ", "そ"]]

benigumocom

extension Array where Element: Collection, Element.Index == Int {
  func showTable() {
    transposed()
      .map { $0.map { "\($0)" } }
      .map {
        let max = $0.map { $0.countAsHalfWidth }.max()!
        return $0.map { $0.padding(length: max) }
      }
      .transposed()
      .map { "| " + $0.joined(separator: " | ") + " |" }

benigumocom

import Foundation

@Observable final class Pong {
  var squares: [Square] = []
  var balls: [Ball] = []
  var dayCount = 0
  var nightCount = 0
  var generation = 0

  private var cols = 0

benigumocom

extension Collection where Element: Collection,
                           Self.Index == Int, Element.Index == Int {

  func transposed1() -> [[Element.Element]] {
    let cols = 0 ..< (self.first?.count ?? 0)
    let rows = 0 ..< self.count
    var result: [[Element.Element]] = []
    for col in cols {
      var newRow: [Element.Element] = []
      for row in rows {