func NewSubsetIndexer(f *os.File) subset { return subset{ f: f, r: line.NewReader(f), Index: New(), } }
func NewColumnIndexer(f *os.File) column { return column{ f: f, r: line.NewReader(f), Index: New(), } }
func NewLineIndexer(f *os.File, nType string, snFormat string, snIndexPath string) Indexer { return &lineRecord{ f: f, r: line.NewReader(f), t: nType, snf: snFormat, snp: snIndexPath, Index: New(), } }