public IndexedSeq<String> getColumnNames() { return getColumnIds().map(ColumnId::getName); }
public IndexedSeq<String> getColumnNames() { return getColumnIds().map(ColumnId::getName); }
@Test public void empty() { DataFrame dataFrame = DataFrame.empty(); assertEquals(0, dataFrame.getRowCount()); assertEquals(0, dataFrame.getColumnCount()); assertTrue(dataFrame.getColumnIds().isEmpty()); assertTrue(dataFrame.getColumnNames().isEmpty()); assertTrue(dataFrame.getColumns().isEmpty()); }
assertEquals(6, df.getColumnCount()); assertEquals(Array.of(NAME, AGE, HEIGHT, VEGETARIAN, DATE_OF_BIRTH, GENDER), df.getColumnIds()); assertEquals(Array.of(nameColumn, ageColumn, heightColumn, vegetarianColumn, dateOfBirthColumn, genderColumn), df.getColumns()); assertEquals(Array.of("Name", "Age", "Height", "Vegetarian", "Date Of Birth", "Gender"), df.getColumnNames());