gistfile1.txt

func parse(input io.Reader) (p *point, err error) {
	// handle read errors
	read := func(data interface{}) {
		if err == nil {
			err = binary.Read(input, binary.BigEndian, data)
		}
	}

	p := &point{}
	read(&p.Longitude)
	read(&p.Latitude)
	read(&p.Distance)
	read(&p.ElevationGain)
	read(&p.ElevationLoss)

	if r.err != nil {
		p = nil
	}
}