@Override
	public float floatAt(final int index, final float defaultValue) {
		return isEmptyAt(index)
			? defaultValue
			: requireNonNull(converter.convert(columns[index], Float.class));
	}
Wraps the given column values with the {@link Converter#DEFAULT} converter.

@param columns the row values
jenetics.incubator/src/main/java/io/jenetics/incubator/csv/ColumnsRow.java