Why is my Go code throwing an "Error: 'no new variables on left side of :='"?

In the provided Go code:

package main

import "fmt"

func main() {
    myArray  :=[...]int{12,14,26}  ;     
    fmt.Println(myArray)

    myArray  :=[...]int{11,12,14} //error on this line
    fmt.Println(myArray) ;
}

The first statement correctly declares and initializes the myArray variable using the ":=" notation. However, in the second statement, attempts to reassign values to the existing myArray variable using ":=" again.

In Go, ":=" is a shorthand for declaring and initializing a new variable. It assigns the value on the right-hand side to the identifier on the left-hand side. In other words, in the first statement, ":=" is valid because it introduces a new variable myArray and assigns it the list of integers.

However, when re-assigning values to an existing variable, ":=" cannot be used. Instead, the regular assignment operator "=" should be used as shown below:

myArray = [...]int{11,12,14}

By removing the colon (":") from the second statement, the code correctly assigns new values to the myArray variable using the "=" operator. The corrected code is:

package main

import "fmt"

func main() {
    myArray  :=[...]int{12,14,26}  ;     
    fmt.Println(myArray)

    myArray = [...]int{11,12,14} //correct assignment
    fmt.Println(myArray) ;
}

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