ralfebert

import Foundation
import SwiftUI

struct IndexedCollection<Base: RandomAccessCollection>: RandomAccessCollection {
    typealias Index = Base.Index
    typealias Element = (index: Index, element: Base.Element)
    let base: Base
    var startIndex: Index { self.base.startIndex }
    var endIndex: Index { self.base.endIndex }
    func index(after i: Index) -> Index {

ralfebert

import Foundation
import CoreData

extension NSPersistentContainer {

    typealias ErrorHandler = (NSError) -> Void

    convenience init(defaultContainerWithName name : String, inMemory : Bool = false, errorHandler : ErrorHandler? = nil) {

        self.init(name: name)

ralfebert

{
  "images" : [
    {
      "filename" : "icon_20pt@2x.png",
      "idiom" : "iphone",
      "scale" : "2x",
      "size" : "20x20"
    },
    {
      "filename" : "icon_20pt@3x.png",

ralfebert

import SwiftUI
import BottomSheet

struct ContentView: View {
    @State private var bottomSheetPresented = true
    
    var body: some View {
        Color.yellow
            .ignoresSafeArea()
            .bottomSheet(isPresented: $bottomSheetPresented) {

ralfebert

import MapKit

extension CLLocationCoordinate2D {

    /// Returns the distance between two coordinates in meters.
    func distance(to: CLLocationCoordinate2D) -> CLLocationDistance {
        MKMapPoint(self).distance(to: MKMapPoint(to))
    }

}

ralfebert

FB9624677: Xcode Editing command to expand the current selection

May I suggest adding an editing command with a key binding to Xcode that expands the current selection according to the structure of the code?

This is a very common editing feature in other IDE's and it is a sorely missed in Xcode.

For example:

Intellij: https://www.jetbrains.com/go/guide/tips/expanding-shrinking-selection/
VS Code: https://code.visualstudio.com/docs/getstarted/tips-and-tricks#_shrink-expand-selection

ralfebert

FB9624610: Formatting Swift code using an external tool like swiftformat on Save

I am using the splendid command-line tool swiftformat (https://github.com/nicklockwood/SwiftFormat) to format my Swift code.

For my, the perfect integration point for this tool would be on Save in Xcode. In that way the formatting would not interrupt my editing, but I can see/check the changes done by the formatter, but never forget to format a file after editing.

I'd like to suggest a configuration option for Xcode that allows to configure it in such a way that, when I press save (cmd S) it saves the file and then runs a command line utility and reloads the file - or a capability for an Xcode source code editor extension to do such an operation.

One alternative could be to do it at build time which is possible to configure currently using a Build phase (https://github.com/nicklockwood/SwiftFormat#xcode-build-phase), but unfortunately, with this setup one loses all the undo history in Xcode.

ralfebert

actor SyncActor {

    var syncRequests = 0

    private func sync() async {
        // Make sure only one sync is in progress at the same time
        // (because of actor re-entrancy another sync could be started while we await for the persistence/network operations)
        self.syncRequests += 1
        if self.syncRequests > 1 {
            // Sync already in progress

ralfebert

func countriesExampleData() -> [Country] {
    [
        Country(
            id: "at",
            name: "Austria",
            capital: "Vienna",
            population: 8_935_112,
            drivingSide: .right
        ),
        Country(

ralfebert

Components

• https://github.com/LucasMucGH/BottomSheet (works; examples work and provide a reasonable multi-height bottom drawer for swiftui, although in detail it's different from the Apple Maps one)
• https://github.com/faberNovel/DynamicOverlay (works; provides a SwiftUI example that copies the gestures of the Apple Maps app more closely, actual implementation is UIKit)
• https://swiftwithmajid.com/2019/12/11/building-bottom-sheet-in-swiftui/ (only the first step of building a drawer)
• https://github.com/weitieda/bottom-sheet (Only single height)
• https://github.com/maustinstar/swiftui-drawer (Examples don't work out of the box)

See also