Method UpdateColumnNameMap

tensor/table/table.go:127–144

UpdateColumnNameMap updates the column name map, returning an error if any of the column names are duplicates.

()

// UpdateColumnNameMap updates the column name map, returning an error
// if any of the column names are duplicates.
func (dt *Table) UpdateColumnNameMap() error {
	nc := dt.NumColumns()
	dt.ColumnNameMap = make(map[string]int, nc)
	var errs []error
	for i, nm := range dt.ColumnNames {
		if _, has := dt.ColumnNameMap[nm]; has {
			err := fmt.Errorf("table.Table duplicate column name: %s", nm)
			slog.Warn(err.Error())
			errs = append(errs, err)
		} else {
			dt.ColumnNameMap[nm] = i
		}
	}
	if len(errs) > 0 {
		return errors.Join(errs...)
	}
	return nil
}

// AddColumn adds a new column to the table, of given type and column name
// (which must be unique).  The cells of this column hold a single scalar value: