Method RowsByStringIndex

tensor/table/table.go:402–424

RowsByStringIndex returns the list of rows that have given string value in given column index. if contains, only checks if row contains string; if ignoreCase, ignores case. Use named args for greater clarity.

(column int, str string, contains, ignoreCase bool)

// if contains, only checks if row contains string; if ignoreCase, ignores case.
// Use named args for greater clarity.
func (dt *Table) RowsByStringIndex(column int, str string, contains, ignoreCase bool) []int {
	col := dt.Columns[column]
	lowstr := strings.ToLower(str)
	var idxs []int
	for i := 0; i < dt.Rows; i++ {
		val := col.String1D(i)
		has := false
		switch {
		case contains && ignoreCase:
			has = strings.Contains(strings.ToLower(val), lowstr)
		case contains:
			has = strings.Contains(val, str)
		case ignoreCase:
			has = strings.EqualFold(val, str)
		default:
			has = (val == str)
		}
		if has {
			idxs = append(idxs, i)
		}
	}
	return idxs
}

// RowsByString returns the list of rows that have given
// string value in given column name.  returns nil if name invalid -- see also Try.