What main actions can be performed on a data array?

Basic operations with a data array in Go include:

• Array initialization
• Reading and writing elements by index
• Iterating over array elements
• Copying an array
• Getting the length of an array

Example:

package main
import "fmt"

func main() {
    var arr [3]int = [3]int{1, 2, 3} // array initialization
    fmt.Println(arr[0])               // read element
    arr[1] = 10                      // write element

    for i, v := range arr {          // iterate over array
        fmt.Printf("arr[%d] = %d\n", i, v)
    }

    length := len(arr)               // array length
    fmt.Println("Length:", length)
}