Does the Dart language support built-in primitive data types?

In Dart, there are no built-in primitive data types in the sense that languages like Java or C++ have. All types in Dart are objects, including numbers, boolean values, and strings.

For example, types int, double, bool, String are classes, and their values are objects. This allows you to use methods and properties directly on these types.

Example:

int a = 5;
print(a.isEven); // true

String s = 'Hello';
print(s.length); // 5

Thus, in Dart, there are no primitives; all types are objects.