[]T转[]*T类型

gistfile1.go

// http://play.golang.org/p/068n_JHmQU

package main

import (
	"fmt"
	"image"
	"reflect"
)

func main() {
	v0 := []image.Point{
		image.Point{X: 1, Y: 101},
		image.Point{X: 2, Y: 202},
	}
	fmt.Printf("%T, %v\n", v0, v0)

	v1 := MapSliceToPtr(v0)
	fmt.Printf("%T, %v\n", v1, v1)
}

func MapSliceToPtr(slice interface{}) interface{} {
	val := reflect.ValueOf(slice)
	if val.Kind() != reflect.Slice {
		panic(fmt.Sprintf("MapSlice called with non-slice value of type %T", slice))
	}
	out := reflect.MakeSlice(
		reflect.SliceOf(reflect.PtrTo(reflect.TypeOf(slice).Elem())),
		val.Len(),
		val.Cap(),
	)
	for i := 0; i < val.Len(); i++ {
		v := reflect.New(reflect.TypeOf(slice).Elem())
		v.Elem().Set(val.Index(i))
		out.Index(i).Set(v)
	}
	return out.Interface()
}