Swift is a powerful and easy-to-learn programming language designed for developing iOS, macOS, watchOS, and tvOS applications. It combines the features of modern programming languages and has the advantages of safety, efficiency and expressiveness. In this tutorial, we'll cover the basics and syntax of Swift, with some sample code to get you started.
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Installing Swift
First, you need to install the Swift development environment. You can download the latest version of Swift from the Swift official website (https://swift.org). Depending on your operating system, choose the version that suits you and follow the instructions to install it. -
Writing your first Swift program
Let's start with a simple "Hello, World!" program. Create a new file, name it "hello.swift" and open it with any text editor.
Enter the following code into the file:
print("Hello, World!")
Save the file and execute the following commands in the terminal to compile and run the program:
swift hello.swift
You should see the output in the terminal: "Hello, World!".
- Variables and Constants
In Swift, you use variables and constants to store and manipulate data. The value of a variable can be changed, whereas the value of a constant cannot be changed after initialization. </