Jpunt

# When using RN in combination with Cocoapods, a lot of 
# things are broken. These are the fixes we had to append 
# to our Podfile when upgrading to ReactNative@0.55.3.
# 
# WARNING: Check those line numbers when you're on a different version!

def change_lines_in_file(file_path, &change)
  print "Fixing #{file_path}...\n"

  contents = []

Jpunt

var body: some View {
  List(tweets.identified(by: \.id)) { tweet in
    HStack {
      Text(tweet.message)
      tweet.imageName.map { Image($0) } ?? Image("fallback")
    }
  }
}

Jpunt

var body: some View {
  List(tweets.identified(by: \.id)) { tweet in
    HStack {
      Text(tweet.message)
      
      tweet.imageName.map 
        { ViewBuilder.buildEither(first: Image($0) } 
        ?? ViewBuilder.buildEither(second: Text("No image"))
    }
  }

Jpunt

var body: some View {
  List(tweets.identified(by: \.id)) { tweet in
    HStack {
      Text(tweet.message)
      tweet.imageName.map { Image($0) }
    }
  }
}

Jpunt

var body: some View {
  List(tweets.identified(by: \.id)) { tweet in
    HStack {
      Text(tweet.message)

      IfLet(tweet.imageName) { imageName in
        Image(imageName)
      }
    }
  }

Jpunt

struct IfLet<T, Out: View>: View {
  let value: T?
  let produce: (T) -> Out

  init(_ value: T?, produce: @escaping (T) -> Out) {
    self.value = value
    self.produce = produce
  }

  var body: some View {

Jpunt

var body: some View {
  Group {
    if x {
      Text(“Something”)
    } else {
      Text(“Something else”)
    }
  }
}

Jpunt

var body: some View {
  Group {
    Text(“First thing”)
    Text(“Second thing”)
    Text(“Third thing”)
  }
}

Jpunt

import SwiftUI

struct Tweet: Identifiable {
  var id: UUID
  let message: String
  let imageName: String?

  init(message: String, imageName: String? = nil) {
    self.id = UUID()
    self.message = message

Jpunt

/**
 * Types
 */

// IState
import rootReducer from "./reducers";
export type IState = {
  // Maps the return type of each reducer into its return-type
  [K in keyof typeof rootReducer]: ReturnType<typeof rootReducer[K]>
}