mv /ana, /ledger to /src/

src/ledger/delta.go

@@ -0,0 +1,38 @@
+package ledger
+
+import "fmt"
+
+type Currency string
+
+const (
+	USD = Currency("$")
+)
+
+type Delta struct {
+	Date        string
+	Name        string
+	Value       float64
+	Currency    Currency
+	Description string
+	isSet       bool
+}
+
+func newDelta(d, desc, name string, v float64, c string, isSet bool) Delta {
+	return Delta{
+		Date:        d,
+		Name:        name,
+		Value:       v,
+		Currency:    Currency(c),
+		Description: desc,
+		isSet:       isSet,
+	}
+}
+
+func (delta Delta) Debug() string {
+	return fmt.Sprintf("{@%s %s:\"%s\" %s%.2f %s}", delta.Date, delta.Name, delta.Description, func() string {
+		if !delta.isSet {
+			return ""
+		}
+		return "= "
+	}(), delta.Value, delta.Currency)
+}