// Builds table from src iterator. func (t *tOps) createFrom(src iterator.Iterator) (f *tFile, n int, err error) { w, err := t.create() if err != nil { return } defer func() { if err != nil { w.drop() } }() for src.Next() { err = w.append(src.Key(), src.Value()) if err != nil { return } } err = src.Error() if err != nil { return } n = w.tw.EntriesLen() f, err = w.finish() return }