tibita11

import SwiftUI

struct ContentView: View {
    @State private var currentIndex = 0
    @GestureState private var dragOffset: CGFloat = 0
    let examples = ["1", "2", "3"]
    let itemPadding: CGFloat = 20
    
    var body: some View {
        GeometryReader { bodyView in

tibita11

struct ContentView: View {
    @State private var isTrailing = false


    var body: some View {
       VStack(alignment: isTrailing ? .trailing : .leading) {
            Image(systemName: "box.truck")
                .font(.system(size: 64))

tibita11

import UIKit
import SwiftUI

struct PageControl: UIViewRepresentable {
    var numberPages: Int
    @Binding var currentPage: Int
    
    func makeCoordinator() -> Coordinator {
        Coordinator(control: self)
    }

tibita11

import SwiftUI

struct FeatureCard: View {
    var landmark: Landmark
    
    var body: some View {
        landmark.featureImage?
            .resizable()
            .overlay { // overlayで重ねる
                TextOverlay(landmark: landmark)

tibita11

import SwiftUI

struct ContentView: View {
    @State private var selection: CustomTab = .home
    
    var body: some View {
        VStack {
            TabView(selection: $selection) {
                Text("Home")
                    .tag(CustomTab.home)

tibita11

func image(color: UIColor, size: CGSize) -> UIImage {
    let renderer = UIGraphicsImageRenderer(size: size)

    return renderer.image(actions: { rendererContext in
        // 描画処理
        rendererContext.cgContext.setFillColor(color.cgColor) // 色を指定
        rendererContext.fill(CGRect(origin: CGPoint.zero, size: size)) // 塗りつぶす
    })
}

tibita11

import SwiftUI


struct ContentView: View {
    @State private var selection: Tab = .featured


    enum Tab {
        case featured
        case list

tibita11

.listRowInsets(EdgeInsets())

tibita11

let names = ["Alice", "Bob", "Charlie", "David", "Eve", "Frank", "Grace", "Harry", "Iris", "Jack"]
let groupedNames = Dictionary(grouping: names) { $0.first! }
print(groupedNames)

tibita11

import Foundation

var landmarks: [Landmark] = load("landmarkData.json")

// 型推論を使用するためジェネリクスでもOK
func load<T: Decodable>(_ filename: String) -> T {
    let data: Data
    
    guard let file = Bundle.main.url(forResource: filename, withExtension: nil) 
    else {