What are the primitive data types?

In Dart (the language used in Flutter), primitive data types are as follows:

• int: Integer values (without a decimal part). The range depends on the platform (up to 64 bits).
• double: Floating-point numbers (with a decimal part). Represented in 64-bit IEEE 754 format.
• bool: Boolean values (true or false).
• String: A sequence of characters enclosed in single or double quotes.

These types are objects in Dart (inherit from Object), but are often called "primitive" in the context of performance and direct representation in machine code.