variables

// Empty
// Default values for numerics is 0, for strings is "" and for bool is false
var i int

// Long init and/or outside the scope of a function
// Type is inferred from the assignment
var i = 0

// Shortcut
// Type is inferred from the assignment
i := 0

// Multiple assignments
a, b, c := "string", 0, 3.5

// Block initialization outside of a function
var (
    a int
    b string
    c float64
    d float32
)

// Constants
const Pi = 3.14

const (
   // Pi is 3.14 and this comment is required
    Pi = 3.14
   // Tau is half of pi, also this comment is required
    Tau = Pi / 2
)