Swift in 2025: Where to Start Learning in Practice

Introduction: Why Swift in 2025?

Swift is a modern, powerful, and intuitive programming language developed by Apple. In 2025, it remains the primary tool for creating applications for iOS, macOS, watchOS, and tvOS. If you want to enter the world of development for the Apple ecosystem or simply master a new language with high performance and type safety — Swift is the ideal choice.

In this article, we will break down where to start learning Swift in practice in 2025. You will learn how to set up the development environment, write your first lines of code, and create a simple application. No boring theory — just practice.

1. Installing Xcode and Setting Up the Environment

The first step to learning Swift is installing Xcode. This is Apple's official integrated development environment (IDE), which includes the Swift compiler, device simulators, and all necessary tools.

How to Install Xcode

• Open the App Store on your Mac.
• Find Xcode (the latest stable version as of 2025 is Xcode 16 or newer).
• Click "Download" and wait for the installation to complete (size is about 10-15 GB).

After installation, open Xcode. The first thing you will see is the welcome window. You can create a new project or open an existing one.

First Launch: Creating a Project

Select Create a new Xcode project → iOS → App (application template). Fill in the fields:

• Product Name: MyFirstApp
• Team: leave empty or add your Apple ID
• Interface: SwiftUI (recommended for beginners)
• Language: Swift

Click Next and choose a folder to save. Done — you have created a project.

2. Swift Syntax Basics: Writing Your First Code

Swift is a language with a clear and concise syntax. Let's break down the basic constructs that will be useful in any application.

Variables and Constants

In Swift, variables are declared using var, and constants using let. The compiler automatically determines the data type.

var name = "Anna"   // string (String)let age = 25        // integer (Int)var price: Double = 99.99  // explicit type declaration

Functions

Functions are blocks of code that can be called repeatedly. They are declared using the func keyword.

func greet(user: String) -> String {    return "Hello, \\(user)!"}

let message = greet(user: "World")print(message) // Outputs: "Hello, World!"

Control Structures

Conditional statements and loops look familiar:

let score = 85if score >= 80 {    print("Excellent!")} else {    print("Try again")}

for i in 1...5 {    print("Step \\(i)")}

3. SwiftUI: Creating an Interface Without Storyboards

SwiftUI is a modern framework for building user interfaces. In 2025, it has become the standard for new projects. Instead of dragging and dropping elements in Interface Builder, you describe the interface declaratively.

ContentView Structure

Open the ContentView.swift file in your project. By default, it will contain the following code:

import SwiftUI

struct ContentView: View {    var body: some View {        VStack {            Image(systemName: "globe")                .imageScale(.large)                .foregroundStyle(.tint)            Text("Hello, world!")        }        .padding()    }}

#Preview {    ContentView()}

Adding Interactivity

Let's make an app that counts button presses. Replace the contents of ContentView with the following code:

import SwiftUI

str