func (r *Reader) ReadUint64() uint64 {
	if r.err != nil {
		return 0
	}
	var n int
	n, r.err = io.ReadFull(r.rd, r.b[:8])
	r.cnt += n
	if r.err != nil {
		return 0
	}
	return binary.LittleEndian.Uint64(r.b[:8])
}
func (r *Reader) ReadUint64() uint64 {
	if r.err != nil {
		return 0
	}
	var n int
	n, r.err = io.ReadFull(r.rd, r.b[:8])
	r.cnt += n
	if r.err != nil {
		return 0
	}
	return binary.LittleEndian.Uint64(r.b[:8])
}
func ( r * Reader ) ReadUint64 ( ) uint64 { if r . err != nil { return 0 } var n int n , r . err = io . ReadFull ( r . rd , r . b [ : 8 ] ) r . cnt += n if r . err != nil { return 0 } return binary . LittleEndian . Uint64 ( r . b [ : 8 ] ) }
// ReadUint64 reads and returns an uint64.
ReadUint64 reads and returns an uint64 .