SatoTakeshiX

  func scaleAndOrient(image: UIImage) -> UIImage {

      // Set a default value for limiting image size.
      let maxResolution: CGFloat = 640

      guard let cgImage = image.cgImage else {
          print("UIImage has no CGImage backing it!")
          return image
      }

SatoTakeshiX

struct ContentView: View {
    var body: some View {
        NavigationView {
            NavigationLink(destination: Text("sdetail")) {
                Text("master")
                    .navigationBarTitle("nav", displayMode: .inline)
            }
            .navigationBarTitle("nav", displayMode: .large)

            Text("detassssssil")

SatoTakeshiX

Button(action: doSomething) {
    Text("Default padding")
        .padding()
        .background(Color.yellow)
}

SatoTakeshiX

//
//  ContentView.swift
//  TryGeometryReader
//
//  Created by satoutakeshi on 2019/12/07.
//  Copyright © 2019 satoutakeshi. Licensed under MIT.
//

import SwiftUI

SatoTakeshiX

struct ContentView: View {
    var body: some View {
        TabView {
            NavigationView {
                NavigationLink(destination: Text("Next Page")) {
                    BlueView()
                }
            }
            .navigationBarTitle(Text("Landmarks"))
            .tabItem {

SatoTakeshiX

勉強会で出てきたリンク集

https://designcode.io/swiftui?promo=learnswiftui

---

kitaさん mobx https://github.com/mobxjs/mobx

SatoTakeshiX

//: A UIKit based Playground for presenting user interface
  
import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {
        let view = UIView()
        view.backgroundColor = UIColor.blue

SatoTakeshiX

let today = Date() //2018年12月18日に実行
// 中国の農暦 = 旧暦
let chineseCalendar = Calendar(identifier: .chinese)
let comp = chineseCalendar.dateComponents([.year, .month, .day], from: today)
print(comp.debugDescription)
// year: 35 month: 11 day: 12 isLeapMonth: false 

SatoTakeshiX

// 旧暦(農暦）
let chine = Calendar(identifier: .chinese)

SatoTakeshiX

// インデックス番号を入れたらその番号のフィボナッチ数を出力
func fib(index: Int) -> Int {
    guard index > 1 else { return 1 }
    var a = 1
    var b = 1
    (2...index).forEach { (index) in
        (a, b) = (a + b, a)
    }

    return a