Dart Multi-line Comment

A multi-line comment in Dart is a lexical construct that instructs the compiler to ignore all text enclosed within a specific pair of delimiters, allowing for block-level text that spans one or more lines. The syntax begins with a forward slash followed by an asterisk (/*) and terminates with an asterisk followed by a forward slash (*/).

/*
  This is a multi-line comment.
  The Dart compiler ignores everything between the delimiters.
*/

A distinguishing technical feature of Dart’s multi-line comments is that they fully support nesting. The Dart analyzer tracks the depth of the comment blocks, requiring an exact match between the number of opening /* and closing */ tokens to successfully terminate the outer comment. This prevents premature termination errors common in other C-family languages.

/*
  Level 1 comment block begins.
  
  /*
    Level 2 nested comment block.
    The compiler tracks this inner scope.
  */
  
  Level 1 comment block continues and concludes.
*/

Because the parser evaluates the entire comment block as a single whitespace character, multi-line comments can also be placed inline within a single statement without breaking the syntax.

int total = 100 /* inline block comment */ + 50;

Tired of Poor Dart Skills? Fix That With Deep Grasping!Learn More

Methods

Constructors

Classes

Getters & Setters

Variables

Fields

Parameters

Pattern Matching

Generics

Extensions

Type Aliases

Enums

Control Flow

Loops

Error Handling

Standard Library Types

Annotations

Libraries & Imports

Built-In Types

Comments

Cascade Operators

Spread Operators

Access Operators

Type Cast & Test Operators

Conditional Operators

Arithmetic Operators

Comparison Operators

Logical Operators

Increment & Decrement Operators

Unary Operators

Bitwise Operators

Assignment Operators

Dart Multi-line Comment