Dart Constants

Dart Constants are immutable objects, which means that they can’t be changed or modified during the execution of the Dart program. It cannot be reassigned once we initialize the constant with a value. Dart will throw an exception if we try to modify the constant.

Dart Constants

The Dart constants can be defined using the following keywords:

• final keyword
• const keyword

These keywords can be used with or without a data type name.

final keyword

The final keyword denotes a single-time assignment of the variable. We can define the constant by using the final keyword. The general syntax to define a constant using the final keyword is as follows:

final constant_name;

final data_type constant_name

Example

final int MAX_ELEMENTS = 10;

const keyword

The const keyword represents the compile-time constant. We can define a constant by using the const keyword. The syntax is as follows:

const constant_name

const data_type constant_name

Example

const String bank_name=”Bank of America”;

—

Dart Tutorials

Dart tutorial on this website can be found at:

https://www.testingdocs.com/dart-tutorials-for-beginners/