no new variables on left side of :=

Question

What\'s happening here?

package main

import \"fmt\"

func main() {

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

    myArray  :=[...         


        

Answer 1

As a side note, redeclaration can only appear in a multi-variable short declaration

Quoting from the Language specification:

Unlike regular variable declarations, a short variable declaration may redeclare variables provided they were originally declared earlier in the same block with the same type, and at least one of the non-blank variables is new. As a consequence, redeclaration can only appear in a multi-variable short declaration. Redeclaration does not introduce a new variable; it just assigns a new value to the original.

package main

import "fmt"


func main() {
    a, b := 1, 2
    c, b := 3, 4

    fmt.Println(a, b, c)
}

Here is a very good example about redeclaration of variables in golang: https://stackoverflow.com/a/27919847/4418897