List.removeMultiple implemented in Golang

mylist.go

package main

import ("fmt")

type (
    T interface{}
    MyList []T
)

func (listp *MyList) removeMultiple(toRemove MyList) {
    list := *listp
    toRemoveMap := make(map[T]bool)
    for _, item := range toRemove { toRemoveMap[item] = true }

    i := 0
    upper := len(list) - 1
    for i <= upper {
        if _, ok := toRemoveMap[list[i]]; ok {
            list[i], list[upper] = list[upper], list[i]
            upper--
        } else {
            i++
        }
    }

    *listp = list[0:(upper + 1)]
}

func main() {
    list := MyList{ 1, 0, 2, 4, "wtf", 1024, "test", 250 }
    toRemove := MyList{ "wtf", 1, 4, 250 }

    fmt.Println("Original:", list)
    fmt.Println("Removing:", toRemove)
    list.removeMultiple(toRemove)
    fmt.Println("After:", list)
}