Led converter in Go

led.go

package main
import (
    "fmt"
    "strings"
    "strconv"
)
func main() {
    fmt.Printf("%s\n", convertToLCD( 1234567890 ) )
}
// Convert a given number into an "LCD" esque representation: 
// ie
// 42 =     _
//      |_| _|
//        ||_
func convertToLCD( n int ) string {
    i , result , numbers  := 0 , "" , strings.Split( all_numbers, ".\n" )

    for   _, char :=  range strconv.Itoa( n )  {
        current := numbers[ char  - '0'  ]

        if  i == 0   {
            result = current
        } else {
            r1, r2, r3 := 3*i, 6*i+1, 9*i+2
            result = result[0    : r1] + current[0:4] +
                     result[r1+1 : r2] + current[4:8] +
                     result[r2+1 : r3] + current[8:12]
        }
        i++
    }
    return result
}
const all_numbers = 
` _ 
| |
|_|
.
   
  |
  |
.
 _ 
 _|
|_ 
.
 _ 
 _|
 _|
.
   
|_|
  |
.
 _ 
|_ 
 _|
.
 _ 
|_ 
|_|
.
 _ 
  |
  |
.
 _ 
|_|
|_|
.
 _ 
|_|
 _|
`

Output:

$ 6g led.go  ; 6l led.6  ; ./6.out 
    _  _     _  _  _  _  _  _ 
  | _| _||_||_ |_   ||_||_|| |
  ||_  _|  | _||_|  ||_| _||_|