func ToStringE(i interface{}) (string, error) {
	i = indirectToStringerOrError(i)
	jww.TRACE.Println("ToStringE called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case string:
		return s, nil
	case bool:
		return strconv.FormatBool(s), nil
	case float64:
		return strconv.FormatFloat(i.(float64), 'f', -1, 64), nil
	case int64:
		return strconv.FormatInt(i.(int64), 10), nil
	case int:
		return strconv.FormatInt(int64(i.(int)), 10), nil
	case []byte:
		return string(s), nil
	case template.HTML:
		return string(s), nil
	case template.URL:
		return string(s), nil
	case template.JS:
		return string(s), nil
	case template.CSS:
		return string(s), nil
	case template.HTMLAttr:
		return string(s), nil
	case nil:
		return "", nil
	case fmt.Stringer:
		return s.String(), nil
	case error:
		return s.Error(), nil
	default:
		return "", fmt.Errorf("Unable to Cast %#v to string", i)
	}
}
ToStringE casts an empty interface to a string.
package cast
import (
	"fmt"
	"html/template"
	"reflect"
	"strconv"
	"strings"
	"time"
	jww "github.com/spf13/jwalterweatherman"
)
func ToTimeE(i interface{}) (tim time.Time, err error) {
	i = indirect(i)
	jww.TRACE.Println("ToTimeE called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case time.Time:
		return s, nil
	case string:
		d, e := StringToDate(s)
		if e == nil {
			return d, nil
		}
		return time.Time{}, fmt.Errorf("Could not parse Date/Time format: %v\n", e)
	default:
		return time.Time{}, fmt.Errorf("Unable to Cast %#v to Time\n", i)
	}
}
func ToDurationE(i interface{}) (d time.Duration, err error) {
	i = indirect(i)
	jww.TRACE.Println("ToDurationE called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case time.Duration:
		return s, nil
	case int64:
		d = time.Duration(s)
		return
	case float64:
		d = time.Duration(s)
		return
	case string:
		d, err = time.ParseDuration(s)
		return
	default:
		err = fmt.Errorf("Unable to Cast %#v to Duration\n", i)
		return
	}
}
func ToBoolE(i interface{}) (bool, error) {
	i = indirect(i)
	jww.TRACE.Println("ToBoolE called on type:", reflect.TypeOf(i))
	switch b := i.(type) {
	case bool:
		return b, nil
	case nil:
		return false, nil
	case int:
		if i.(int) != 0 {
			return true, nil
		}
		return false, nil
	case string:
		return strconv.ParseBool(i.(string))
	default:
		return false, fmt.Errorf("Unable to Cast %#v to bool", i)
	}
}
func ToFloat64E(i interface{}) (float64, error) {
	i = indirect(i)
	jww.TRACE.Println("ToFloat64E called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case float64:
		return s, nil
	case float32:
		return float64(s), nil
	case int64:
		return float64(s), nil
	case int32:
		return float64(s), nil
	case int16:
		return float64(s), nil
	case int8:
		return float64(s), nil
	case int:
		return float64(s), nil
	case string:
		v, err := strconv.ParseFloat(s, 64)
		if err == nil {
			return float64(v), nil
		}
		return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
	default:
		return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
	}
}
func ToInt64E(i interface{}) (int64, error) {
	i = indirect(i)
	jww.TRACE.Println("ToInt64E called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case int64:
		return s, nil
	case int:
		return int64(s), nil
	case int32:
		return int64(s), nil
	case int16:
		return int64(s), nil
	case int8:
		return int64(s), nil
	case string:
		v, err := strconv.ParseInt(s, 0, 0)
		if err == nil {
			return v, nil
		}
		return 0, fmt.Errorf("Unable to Cast %#v to int64", i)
	case float64:
		return int64(s), nil
	case bool:
		if bool(s) {
			return int64(1), nil
		}
		return int64(0), nil
	case nil:
		return int64(0), nil
	default:
		return int64(0), fmt.Errorf("Unable to Cast %#v to int64", i)
	}
}
func ToIntE(i interface{}) (int, error) {
	i = indirect(i)
	jww.TRACE.Println("ToIntE called on type:", reflect.TypeOf(i))
	switch s := i.(type) {
	case int:
		return s, nil
	case int64:
		return int(s), nil
	case int32:
		return int(s), nil
	case int16:
		return int(s), nil
	case int8:
		return int(s), nil
	case string:
		v, err := strconv.ParseInt(s, 0, 0)
		if err == nil {
			return int(v), nil
		}
		return 0, fmt.Errorf("Unable to Cast %#v to int", i)
	case float64:
		return int(s), nil
	case bool:
		if bool(s) {
			return 1, nil
		}
		return 0, nil
	case nil:
		return 0, nil
	default:
		return 0, fmt.Errorf("Unable to Cast %#v to int", i)
	}
}
func indirect(a interface{}) interface{} {
	if a == nil {
		return nil
	}
	if t := reflect.TypeOf(a); t.Kind() != reflect.Ptr {
		return a
	}
	v := reflect.ValueOf(a)
	for v.Kind() == reflect.Ptr && !v.IsNil() {
		v = v.Elem()
	}
	return v.Interface()
}
func indirectToStringerOrError(a interface{}) interface{} {
	if a == nil {
		return nil
	}
	var errorType = reflect.TypeOf((*error)(nil)).Elem()
	var fmtStringerType = reflect.TypeOf((*fmt.Stringer)(nil)).Elem()
	v := reflect.ValueOf(a)
	for !v.Type().Implements(fmtStringerType) && !v.Type().Implements(errorType) && v.Kind() == reflect.Ptr && !v.IsNil() {
		v = v.Elem()
	}
	return v.Interface()
}