Basic types

In Kotlin, everything is an object in the sense that you can call member functions and properties on any variable. Some types can have a special internal representation – for example, numbers, characters and booleans can be represented as primitive values at runtime – but to the user they look like ordinary classes.

This section describes the basic types used in Kotlin:

• Numbers and their unsigned counterparts

• Booleans

• Characters

• Strings

• Arrays