In Golang, an integer is a data type used to represent whole numbers. This data type allows us to work with whole numbers without decimals, such as counting the quantity of items or indices in a list. There are two main categories of integers in Golang: unsigned integers and signed integers.

Unsigned Integer

In Golang, the term "unsigned" is used to refer to an integer data type that only stores non-negative values (zero and positive numbers) and does not provide space to store negative values. Unsigned integer data types are denoted as "uint" (unsigned integer).

Here is a cheat sheet of the usage of unsigned integer data types in Golang.

Unsigned Integer Code Example

(file main.go):

package main

import "fmt"

func main() {
	var number8 uint8
	number8 = 20
	fmt.Println(number8)
}

We can see that if we run it with:

go run main.go

Then it will produce

20

Signed Integer

In Golang, the term "integer" can represent a signed integer, which is a whole number that includes both positive and negative values.

Here is a cheat sheet of the usage of signed integer data types in Golang.

Contoh Kode Signed Integer

(file main.go):

package main

import "fmt"

func main() {
	var number8 int8
	number8 = 20
	fmt.Println(number8)
}

We can see that if we run it with:

go run main.go

Then it will produce

20