func (row Row) HasColumn(col string) (found bool) {
	_, found = row[col]
	return
}
HasColumn is a predicate returning 'true' when the specified column is present.
package csvplus
import (
	"bytes"
	"encoding/csv"
	"encoding/gob"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"os"
	"sort"
	"strconv"
	"strings"
	"unsafe"
)
type Row map[string]string