接口类型断言，方法参数传递

实现移除某姓名或者某一年龄的人：

package main

import (
    "errors"
    "fmt"
)

type student struct {
    Name string
    Age  int
}
type StudentSlice []student

func (s *StudentSlice) Remove(element interface{}) error {
    for i, v := range *s {
        if value, ok := element.(int); ok {
            if v.Age == value {
                *s = append((*s)[:i], (*s)[i+1:]...)
            }
            continue
        } else if value, ok := element.(string); ok {
            if v.Name == value {
                *s = append((*s)[:i], (*s)[i+1:]...)
            }
            continue
        } else {
            fmt.Println("type error")
            return errors.New("Not Found.")
        }
    }
    return nil
}

func main() {
    students := StudentSlice{
        {Name: "zhou", Age: 24},
        {Name: "li", Age: 23},
        {Name: "wang", Age: 22},
    }
    students.Remove("li")
    students.Remove(22)
    fmt.Println(students)
}