Data Conversion in Go Lang

Go’s basic types are

• bool
• string
• int int8 int16 int32 int64
• uint uint8 uint16 uint32 uint64 uintptr
• byte // alias for uint8
• rune // alias for int32 and also represents a Unicode code point
• float32 float64
• complex64 complex128

The example below shows variables of several types, and also that variable declarations may be “factored” into blocks, as with import statements.

var (
    ToBe   bool       = false
    MaxInt uint64     = 1<<64 - 1
    z      complex128 = cmplx.Sqrt(-5 + 12i)
)

The int, uint, and uintptr types are usually 32 bits wide on 32-bit systems and 64 bits wide on 64-bit systems. When you need an integer value you should use int unless you have a specific reason to use a sized or unsigned integer type.

Reference: A Tour of Go

Conversion	int	float	bool	string
var i int	i	float64(i) float32(in)		strconv.Itoa(i) strconv.FormatInt(i, 10)
var f float	int(f)	f		strconv.FormatFloat(f, ‘E’, -1, 64)
var b bool			b	strconv.FormatBool(b)
var s string	strconv.Atoi(s) strconv.ParseInt(s, 10, 64)	strconv.ParseFloat(s, 32)	strconv.ParseBool(s)	s

Reference: strconv - Go Doc