Update Decimal calculation

numeral.go

@@ -36,18 +36,18 @@ import (
 // Numeral represents a numeral that is consisted by its digits
 // and digit values.
 type Numeral struct {
-	digits      *list.List
-	digitValues []rune
-	digitPositions map [rune]int
+	digits         *list.List
+	digitValues    []rune
+	digitPositions map[rune]int
 }
 
 // NewNumeral initializes a numeral by providing the initial number in strings
 // along with the possible values that each digit can have.
 func NewNumeral(values []rune, initial string) (*Numeral, error) {
 	// initialise a new number.
 	number := Numeral{
-		digits:      list.New(),
-		digitValues: values,
+		digits:         list.New(),
+		digitValues:    values,
 		digitPositions: valuesToPositions(values),
 	}
 	// add digits to the number along with their state.
@@ -61,10 +61,10 @@ func NewNumeral(values []rune, initial string) (*Numeral, error) {
 	return &number, nil
 }
 
-func valuesToPositions(values []rune) map [rune]int {
-	var pos=map[rune]int{}
-	for i := 0; i < len(values) ; i++ {
-		pos[values[i]]=i
+func valuesToPositions(values []rune) map[rune]int {
+	var pos = map[rune]int{}
+	for i := 0; i < len(values); i++ {
+		pos[values[i]] = i
 	}
 	return pos
 }
@@ -184,7 +184,6 @@ func (n *Numeral) Decimal() int {
 		// get current ring.
 		r := d.Value.(*ring.Ring)
 		// get the index of the ring.
-		//i := indexOf(r.Value.(rune), n.digitValues)
 		i := n.digitPositions[r.Value.(rune)]
 		// Add digit's decimal counterpart to the decimal sum.
 		dec = dec + i*powInt(len(n.digitValues), di)