我只想写一些像这样的代码:
func (w Writer) WriteVString(strs []string) (int, error) {
return writeV(func(index int, str interface{}) (int, error) {
return w.WriteString(str.(string))
}, strs) // it doesn't work
}
func (w Writer) WriteV(bs [][]byte) (int, error) {
return writeV(func(index int, b interface{}) (int, error) {
return w.Write(b.([]byte))
}, []interface{}{bs...}) // it also can't be compiled
}
type writeFunc func(int, interface{}) (int, error)
func writeV(fn writeFunc, slice []interface{}) (n int, err error) {
var m int
for index, s := range slice {
if …