<img src="/img/python-types/image05.png">

Without types, that's almost impossible to achieve.

Notice that the variable `item` is one of the elements in the list `items`.

And still, the editor knows it is a `str`, and provides support for that.

#### Tuple and Set { #tuple-and-set }

You would do the same to declare `tuple`s and `set`s:

			results = append(results, p.Interface())
		} else if rv.IsValid() {
			results = append(results, rv.Interface())
		}
	}

	// Process each argument; if an argument is a slice/array, expand its elements
	for _, value := range values {
		rv := reflect.ValueOf(value)
		if rv.Kind() == reflect.Slice || rv.Kind() == reflect.Array {
			for i := 0; i < rv.Len(); i++ {
				appendToResult(rv.Index(i))
			}
		} else {

      return containsKey(object);
    }

    @Override
    public int count(@Nullable Object element) {
      Collection<V> values = map.get(element);
      return (values == null) ? 0 : values.size();
    }

    @Override
    public ImmutableSet<K> elementSet() {
      return keySet();
    }

    @Override
    public int size() {
      return ImmutableMultimap.this.size();

import org.codelibs.core.net.URLUtil;
import org.codelibs.core.nio.ChannelUtil;

/**
 * Utility for copying.
 * <p>
 * The combinations of input and output types and the unit of elements copied are as follows:
 * </p>
 * <table border="1">
 * <caption>Elements for copying instances</caption>
 * <tr>
 * <th rowspan="2">Input type</th>
 * <th colspan="4">Output type</th>
 * </tr>
 * <tr>
 * <th>{@link OutputStream}</th>

   * For example, the cache may evict an entry because it hasn't been used recently or very often.
   *
   * <p>If {@code maximumSize} is zero, elements will be evicted immediately after being loaded into
   * cache. This can be useful in testing, or to disable caching temporarily.
   *
   * <p>This feature cannot be used in conjunction with {@link #maximumWeight}.
   *

NOTE: Due to the project size, the very first import can take a while and IntelliJ might become unresponsive for several seconds during this period.

    return rowKeyToIndex.containsKey(rowKey);
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    for (@Nullable V[] row : array) {
      for (V element : row) {
        if (Objects.equals(value, element)) {
          return true;
        }
      }
    }
    return false;
  }

  @Override
  public @Nullable V get(@Nullable Object rowKey, @Nullable Object columnKey) {

	a := make([][]byte, len(spans))
	for i, span := range spans {
		a[i] = s[span.start:span.end:span.end]
	}

	return a
}

// Join concatenates the elements of s to create a new byte slice. The separator
// sep is placed between elements in the resulting slice.
func Join(s [][]byte, sep []byte) []byte {
	if len(s) == 0 {
		return []byte{}
	}
	if len(s) == 1 {
		// Just return a copy.

        assertEquals(1, result.size());
        assertEquals("   ", result.get(0));
    }

    @Test
    public void testGetAsListWithListContainingNulls() {
        // Test with list containing null elements
        List<String> listWithNulls = new ArrayList<>();
        listWithNulls.add("valid");
        listWithNulls.add(null);
        listWithNulls.add("another");

    assertThat(manyValuesAccumulatorByAddAllStatsAccumulator.min()).isEqualTo(MANY_VALUES_MIN);
    // For datasets of many double values created by adding elements individually, we test many
    // combinations of finite and non-finite values:
    for (ManyValues values : ALL_MANY_VALUES) {
      StatsAccumulator accumulator = new StatsAccumulator();