Why am I getting the 'no new variables on left side of :=' error in my Go code?

Error in Code: "no new variables on left side of :="

In the Go programming language, the error "no new variables on left side of :=" occurs when you try to reassign values ​​to an existing variable using the short declaration syntax.

This error is encountered in the following code snippet:

package main

import "fmt"

func main() {
    myArray  :=[...]int{12,14,26}  // Short declaration and assignment
    fmt.Println(myArray)

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

Reason:

In Go, the colon (:) is used for short declarations and assignments. This is the syntax used when declaring and assigning a variable for the first time, as shown in the first line of the example.

However, on the following line, you try to assign again to the existing variable myArray using a colon (:). This causes an error because the new variable is not declared on the left side.

Solution:

To fix this error, remove the colon (:) from the second statement:

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

Now, The variable myArray will be reassigned without error.

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