golang []interface{} 不能是函数参数吗？

我的代码：

package sort_test

type SortList []interface{}

type SortFunc func(interface{}, interface{}) bool

func Do(list SortList, function SortFunc)

主包

package main

import (

        "sort_test"

)

func main() {

    list := []int{3, 4, 5, 6, 6, 77, 4, 4, 5, 6, 8, 345, 45, 424, 2, 67, 7, 830}

slice := list[:]

sort_test.Do(slice, function)

}

编译错误

src/algorithm/algorithm.go:32: cannot use slice (type []int) as type sort_test.SortList in argument to sort_test.Do

src/algorithm/algorithm.go:32: cannot use function (type func(int, int) bool) as type sort_test.SortFunc in argument to sort_test.Do

make: *** [algorithm] Error 2