Comment by EdiX

  func must(err error) {
    if err != nil { panic(err) }
  }  

  func (g *Gopher) DumpBinary(w io.Writer) (err error) {
    defer func() {
      err, _ = recover().(error)
    }
    must(binary.Write(w, binary.LittleEndian, int32(len(g.Name))))
    must(w.Write([]byte(g.Name)))
    must(binary.Write(w, binary.LittleEndian, g.Age))
    must(binary.Write(w, binary.LittleEndian, g.FurColor))
    return
  }