kowei

import SwiftUI

struct ContentView: View {
    var body: some View {
        Text("Hello, world!")
            .padding()
    }
}

struct ContentView_Previews: PreviewProvider {

kowei

@available(iOS 13.0, macOS 10.15, tvOS 13.0, watchOS 6.0, *)
extension Text {

    /// Creates a text view that displays localized content identified by a key.
    ///
    /// Use this initializer to look for the `key` parameter in a localization
    /// table and display the associated string value in the initialized text
    /// view. If the initializer can't find the key in the table, or if no table
    /// exists, the text view displays the string representation of the key
    /// instead.

kowei

import SwiftUI

struct ContentView: View {
    var body: some View {
        Text("Hello, world!")
            .padding()
    }
}

struct ContentView_Previews: PreviewProvider {

kowei

struct LocalDemoApp: App {
    @State(initialValue: "en") var lang: String
    
    var body: some Scene {
        WindowGroup {
            ContentView(lang: $lang)
                .environment(\.locale, .init(identifier: lang))
        }
    }
}

kowei

import SwiftUI

struct ContentView: View {
    @Binding var lang: String
    
    var body: some View {
        VStack(alignment: .center, spacing: 30){
            Text("Hello, world!")
                .padding()
            Button("English") {

kowei

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        VStack{
            Text("Preview in English").foregroundColor(.green)
            PreviewWrapper(lang: .init(initialValue: "en"))
        }
        VStack{
            Text("Preview in Spanish").foregroundColor(.orange)
            PreviewWrapper(lang: .init(initialValue: "es"))
        }

kowei

import Foundation
import XcodeKit

class BetterCommand: NSObject, XCSourceEditorCommand {
    
    func perform(with invocation: XCSourceEditorCommandInvocation, completionHandler: @escaping (Error?) -> Void ) -> Void {
        print("BetterCommand: \(invocation.description)")
        print("BetterCommand: \(invocation.commandIdentifier)")
        completionHandler(nil)
    }

kowei

	<key>NSExtension</key>
	<dict>
		<key>NSExtensionAttributes</key>
		<dict>
			<key>XCSourceEditorCommandDefinitions</key>
			<array>
				<dict>
					<key>XCSourceEditorCommandClassName</key>
					<string>$(PRODUCT_MODULE_NAME).BetterCommand</string>
					<key>XCSourceEditorCommandIdentifier</key>

kowei

	<key>NSExtension</key>
	<dict>
		<key>NSExtensionAttributes</key>
		<dict>
			<key>XCSourceEditorCommandDefinitions</key>
			<array>
				<dict>
					<key>XCSourceEditorCommandClassName</key>
					<string>$(PRODUCT_MODULE_NAME).BetterCommand</string>
					<key>XCSourceEditorCommandIdentifier</key>

kowei

import Foundation
import XcodeKit

class BetterCommand: NSObject, XCSourceEditorCommand {
    func perform(with invocation: XCSourceEditorCommandInvocation, completionHandler: @escaping (Error?) -> Void) {
        switch invocation.commandIdentifier {
        case "BetterHelloWorld":
            insertHelloWorl(source: invocation.buffer)
            completionHandler(nil)
            return