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Go Arrays with Examples

Arrays:

Arrays is used to store multiple values of same types in a single variable.
We can create an array with two different ways.

Using var keyword  

    var arr  [3] int

Using Shortcut variable declaration 

     arr := [3] int {"a","b","c"}
Example:
package main
import "fmt"
func main() {
	var arr1 = [3]string{"a", "b", "c"}
	// shothand declaration
	arr2 := [3]string{"1", "2", "3"}
	// if we use ellipsis, length of the array is determined by the initialized elements like arr :=  []string{"1","2"}
	var arr3 = [...]string{"hello"}
	fmt.Println("Array 1 length:", len(arr1))
	fmt.Println("Array 2 length:", len(arr2))
	fmt.Println("Array 3 length:", len(arr3))
}
Output:

Array 1 length: 3
Array 2 length: 3
Array 3 length: 1

Comparing Two Arrays Example:
  • We are able to compare two arrays using (==) operator.
package main
import "fmt"
func main() {
	arr1 := [3]string{"a", "b", "c"}
	arr2 := [3]string{"a", "b", "c"}
	arr3 := [3]string{"1", "2", "3"}

	fmt.Println(arr1 == arr2)
	fmt.Println(arr2 == arr3)
}
Output:


true
false
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