Variables in Go

variables.go

package main

import "fmt"

var global1 int                     // Declaring a variable with `var` keyword
var global2 int = 10                // Assigning a value to a variable right away
var global3 = "this is ok!"         // Go infer type based on your value
// bad_var := "this doesn't work"   // `:=` can be used only inside a function

func main() {
    local1 := 9                     // Inside a function, Go use type inferrence 
                                    // so that you don't have to state type explicitly
    var local2 = 5                  // This is ok 
    var local3 = 7                  // This is ok too
    fmt.Println(global1,
                global2,
                global3,
                local1,
                local2,
                local3,
    )
}