Welcome to our lesson on Kotlin's basic data types. We'll delve into numbers, booleans, characters, strings, and arrays. Additionally, we'll explore how to declare these data types—either explicitly or implicitly. These fundamentals will empower you to create and manipulate data effectively in your Kotlin programs.
In Kotlin, numbers are categorized by their memory sizes and value ranges. For integral numbers, the most popular types are Int
and Long
, requiring 4 and 8 bytes of memory, respectively. For numbers with decimal points, we have Float
and Double
: Float
supports approximately seven decimal places, while Double
can handle around 15. There are also less popular data types such as Short
and Byte
, but we will omit them for now.
Let's explore these number types in action:
