Dart var

Dart is object-oriented programming, and everything is treated as an object in Dart. An object is a variable or instance of the class used to access the class’s properties . Objects have two features – state and behavior.

Dart numbers (the type num ) are either integers (type int ) or doubles (type double ). It is easy to check if a number is an int , just do value is int .

Dart numbers can be classified as: The int data type is used to represent whole numbers. The double data type is used to represent 64-bit floating-point numbers. The num type is an inherited data type of the int and double types .

In the Dart programming language, an integer is represented by the int keyword. As we may know, integers include whole numbers (i.e., non-decimal positive and negative numbers). For every integer, four bytes are allocated in the memory.