How to write comments in Swift language?
Comments explain single or multiple lines of a code
Comments are written for a developer to understand the code better. These are ignored at runtime.
In Swift, You can write a comment in different following ways.
- Single-line comments
- Multi-Line comments
- Documentation commands
Swift comments are similar to C Comments. It is always good practice to add Comments to the below blocks or lines of code.
- Classes description
- before the method declaration
- Any complex logic code
- documentation comments
Single Line comments in Swift
These are also called inline comments.
- It always starts with double forward slashes (// ) symbol characters and ends with a line break.
- It is a description or piece of text for a single line of code.
- These comments are not required at the start in beginning of the line, but also can write in the middle or end of the line Syntax:
// This is single line comments in Swift Code
// Hello World application print("Hello World application")
Learned single-line comments, How do you write multi-line comments
Multi-line comments in Swift
These comments are written in multiple lines and are also called block comments.
Here is a way we can write a multi-line comment.
Multi-line Comments always start with
/* and followed by single or multiple lines and end with
/* multi line comments 1 multi line comments 2 multi line comments 3 */
You can also write multi line comments with single-line comment syntax as given below.
// multi line comments 1 // multi line comments 2 // multi line comments 3
This allows you to write multiple lines of code and be ignored by the compiler.
Block level comments in Swift Example:
// Hello world sample program // Basic program to print hello world to console /* First code to write in Swift programming language */ print("Hello World app");
You learned different types of comments in Swift programming language.
- single line comments (
- Multiple line comments (Starting line begins with
/*and ending line ends with