Method Window

pkg/col/coldata/vec.eg.go:1294–1422

Window returns a "window" into the Vec. A "window" is similar to Golang's slice of the current Vec from [start, end), but the returned object is NOT allowed to be modified (the modification might result in an undefined behavior).

(start int, end int)

// allowed to be modified (the modification might result in an undefined
// behavior).
func (v *Vec) Window(start int, end int) *Vec {
	switch v.CanonicalTypeFamily() {
	case types.BoolFamily:
		switch v.t.Width() {
		case -1:
		default:
			col := v.Bool()
			return &Vec{
				t:                   v.t,
				canonicalTypeFamily: v.canonicalTypeFamily,
				col:                 col.Window(start, end),
				nulls:               v.nulls.Slice(start, end),
			}
		}
	case types.BytesFamily:
		switch v.t.Width() {
		case -1:
		default:
			col := v.Bytes()
			return &Vec{
				t:                   v.t,
				canonicalTypeFamily: v.canonicalTypeFamily,
				col:                 col.Window(start, end),
				nulls:               v.nulls.Slice(start, end),
			}
		}
	case types.DecimalFamily:
		switch v.t.Width() {
		case -1:
		default:
			col := v.Decimal()
			return &Vec{
				t:                   v.t,
				canonicalTypeFamily: v.canonicalTypeFamily,
				col:                 col.Window(start, end),
				nulls:               v.nulls.Slice(start, end),
			}
		}
	case types.IntFamily:
		switch v.t.Width() {
		case 16:
			col := v.Int16()
			return &Vec{
				t:                   v.t,
				canonicalTypeFamily: v.canonicalTypeFamily,
				col:                 col.Window(start, end),
				nulls:               v.nulls.Slice(start, end),
			}
		case 32:
			col := v.Int32()
			return &Vec{
				t:                   v.t,
				canonicalTypeFamily: v.canonicalTypeFamily,
				col:                 col.Window(start, end),
				nulls:               v.nulls.Slice(start, end),
			}
		case -1:
		default: