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Comments in Dart

3 min readMar 22, 2025

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Comments in Dart are an essential part of writing clean, maintainable, and well-documented code. They help developers understand the purpose and functionality of the code, making it easier to read and debug. Dart provides three types of comments:

  1. Single-Line Comments
  2. Multi-Line Comments
  3. Documentation Comments

Let’s explore each type in detail.

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Comments in Dart Programming Languages

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1. Single-Line Comments

Single-line comments in Dart start with two forward slashes (//). They are used to provide short explanations or temporarily disable a line of code.

// This is a single-line comment.
print("Hello, World!"); // This comment explains what this line does.
// print("This line is commented out and will not run.");

Single-line comments are best for quick notes or explanations on a specific line of code.

2. Multi-Line Comments

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Usama Sarwar
Usama Sarwar

Written by Usama Sarwar

Helping founders turn ideas into market-ready web and mobile apps within 30 days using Google’s Flutter & Next.js without juggling multiple teams.

Dart Tutorials
Dart Tutorials

Published in Dart Tutorials

Dart Tutorials for beginners and advanced programmers