IceFireDB: Distributed disk storage database based on Raft and Redis protocol(github.com)

    func cmdLSET(m uhaha.Machine, args []string) (interface{}, error) {
     if len(args) != 4 {
      return nil, rafthub.ErrWrongNumArgs
     }
    
     index, err := ledis.StrInt64([]byte(args[2]), nil)
     if err != nil {
      return nil, err
     }

     if err := ldb.LSet([]byte(args[1]), int32(index), []byte(args[3])); err != nil {
      return nil, err
     }
     return redcon.SimpleString("OK"), nil
    }

    // no copy to change slice to string
    // use your own risk
    func String(b []byte) (s string) {
     pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
     pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
     pstring.Data = pbytes.Data
     pstring.Len = pbytes.Len
     return
    }

    // no copy to change string to slice
    // use your own risk
    func Slice(s string) (b []byte) {
     pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
     pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
     pbytes.Data = pstring.Data
     pbytes.Len = pstring.Len
     pbytes.Cap = pstring.Len
     return
    }