Strings in Dart#

In Dart, strings are sequences of UTF-16 code units and are used to represent text. Dart strings are immutable, which means once you create a string, you cannot change its content. Below are detailed examples and explanations of how to work with strings in Dart.

Creating Strings#

Dart provides several ways to define strings:

Single and Double Quotes#

You can create strings with either single or double quotes; there’s no difference in their functionality.

String greeting = 'Hello';
String response = "Hi there";

Multiline Strings#

For strings that span multiple lines, you can use triple quotes with either single or double quotation marks.

String longText = '''
This is a string
that spans multiple
lines.
''';

String verboseText = """
Another example
of a multiline
string.
""";

Raw Strings#

If you want to create a string where the escape sequences are treated as plain text, use a raw string, which is prefixed with ‘r’.

String Operations#

Dart strings offer numerous methods for manipulation and query.

Concatenation#

Strings can be concatenated using the + operator or string interpolation for more readability and efficiency.

String firstName = 'John';
String lastName = 'Doe';
String fullName = firstName + ' ' + lastName;


String interpolatedFullName = '$firstName $lastName';