text: package pflag
  
  import (
  	"fmt"
  	"strconv"
  	"strings"
  )
  
  // -- intSlice Value
  type intSliceValue struct {
  	value   *[]int
  	changed bool
  }
  
  func newIntSliceValue(val []int, p *[]int) *intSliceValue {
  	isv := new(intSliceValue)
  	isv.value = p
  	*isv.value = val
  	return isv
  }
  
  func (s *intSliceValue) Set(val string) error {
  	ss := strings.Split(val, ",")
  	out := make([]int, len(ss))
  	for i, d := range ss {
  		var err error
  		out[i], err = strconv.Atoi(d)
  		if err != nil {
  			return err
  		}
  
  	}
  	if !s.changed {
  		*s.value = out
  	} else {
  		*s.value = append(*s.value, out...)
  	}
  	s.changed = true
  	return nil
  }
  
  func (s *intSliceValue) Type() string {
  	return "intSlice"
  }
  
  func (s *intSliceValue) String() string {
  	out := make([]string, len(*s.value))
  	for i, d := range *s.value {
  		out[i] = fmt.Sprintf("%d", d)
  	}
  	return "[" + strings.Join(out, ",") + "]"
  }
  
  func (s *intSliceValue) Append(val string) error {
  	i, err := strconv.Atoi(val)
  	if err != nil {
  		return err
  	}
  	*s.value = append(*s.value, i)
  	return nil
  }
  
  func (s *intSliceValue) Replace(val []string) error {
  	out := make([]int, len(val))
  	for i, d := range val {
  		var err error
  		out[i], err = strconv.Atoi(d)
  		if err != nil {
  			return err
  		}
  	}
  	*s.value = out
  	return nil
  }
  
  func (s *intSliceValue) GetSlice() []string {
  	out := make([]string, len(*s.value))
  	for i, d := range *s.value {
  		out[i] = strconv.Itoa(d)
  	}
  	return out
  }
  
  func intSliceConv(val string) (interface{}, error) {
  	val = strings.Trim(val, "[]")
  	// Empty string would cause a slice with one (empty) entry
  	if len(val) == 0 {
  		return []int{}, nil
  	}
  	ss := strings.Split(val, ",")
  	out := make([]int, len(ss))
  	for i, d := range ss {
  		var err error
  		out[i], err = strconv.Atoi(d)
  		if err != nil {
  			return nil, err
  		}
  
  	}
  	return out, nil
  }
  
  // GetIntSlice return the []int value of a flag with the given name
  func (f *FlagSet) GetIntSlice(name string) ([]int, error) {
  	val, err := f.getFlagType(name, "intSlice", intSliceConv)
  	if err != nil {
  		return []int{}, err
  	}
  	return val.([]int), nil
  }
  
  // IntSliceVar defines a intSlice flag with specified name, default value, and usage string.
  // The argument p points to a []int variable in which to store the value of the flag.
  func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) {
  	f.VarP(newIntSliceValue(value, p), name, "", usage)
  }
  
  // IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
  	f.VarP(newIntSliceValue(value, p), name, shorthand, usage)
  }
  
  // IntSliceVar defines a int[] flag with specified name, default value, and usage string.
  // The argument p points to a int[] variable in which to store the value of the flag.
  func IntSliceVar(p *[]int, name string, value []int, usage string) {
  	CommandLine.VarP(newIntSliceValue(value, p), name, "", usage)
  }
  
  // IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash.
  func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) {
  	CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage)
  }
  
  // IntSlice defines a []int flag with specified name, default value, and usage string.
  // The return value is the address of a []int variable that stores the value of the flag.
  func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int {
  	p := []int{}
  	f.IntSliceVarP(&p, name, "", value, usage)
  	return &p
  }
  
  // IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int {
  	p := []int{}
  	f.IntSliceVarP(&p, name, shorthand, value, usage)
  	return &p
  }
  
  // IntSlice defines a []int flag with specified name, default value, and usage string.
  // The return value is the address of a []int variable that stores the value of the flag.
  func IntSlice(name string, value []int, usage string) *[]int {
  	return CommandLine.IntSliceP(name, "", value, usage)
  }
  
  // IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash.
  func IntSliceP(name, shorthand string, value []int, usage string) *[]int {
  	return CommandLine.IntSliceP(name, shorthand, value, usage)
  }
  