Kotlin number data types are used to define variables which hold numeric values and they are divided into two groups: (a) Integer types store whole numbers, positive or negative (b) Floating point types represent numbers with a fractional part, containing one or more decimals.įollowing table list down all the Kotlin number data types, keywords to define their variable types, size of the memory taken by the variables, and a value range which can be stored in those variables. Kotlin built in data type can be categorized as follows: Kotlin is a statically typed language, which means that the data type of every expression should be known at compile time. Kotlin treats everything as an object which means that we can call member functions and properties on any variable. For example, Kotlin data could be numeric, string, boolean etc. Kotlin data type is a classification of data which tells the compiler how the programmer intends to use the data.
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