func (b *filterBlock) contains(filter filter.Filter, offset uint64, key []byte) bool { i := int(offset >> b.baseLg) if i < b.filtersNum { o := b.data[b.oOffset+i*4:] n := int(binary.LittleEndian.Uint32(o)) m := int(binary.LittleEndian.Uint32(o[4:])) if n < m && m <= b.oOffset { return filter.Contains(b.data[n:m], key) } else if n == m { return false } } return true }