if (length == elements.length) {
        dedupAndCoalesce(true);
      } else if (forceCopyElements) {
        this.elements = Arrays.copyOf(elements, elements.length);
        // we don't currently need to copy the counts array, because we don't use it directly
        // in built ISMs
      }
      forceCopyElements = false;
    }

    private void dedupAndCoalesce(boolean maybeExpand) {
      if (length == 0) {

It's all based on standard **Python type** declarations (thanks to Pydantic). No new syntax to learn. Just standard modern Python.

If you need a 2 minute refresher of how to use Python types (even if you don't use FastAPI), check the short tutorial: [Python Types](python-types.md){.internal-link target=_blank}.

You write standard Python with types:

```Python
from datetime import date

from pydantic import BaseModel

### Raise an `HTTPException` in your code { #raise-an-httpexception-in-your-code }

`HTTPException` is a normal Python exception with additional data relevant for APIs.

Because it's a Python exception, you don't `return` it, you `raise` it.

Artık key isimlerini yanlış yazma, dokümantasyona dönüp deliler gibi yukarı aşağı sayfada gezmek ve en sonunda `username` mi yoksa `user_name` mi kullandım gibi sorular yok.

### Kısa

  private static final Iterable<@Nullable Integer> iterableFourNulls =
      Arrays.asList((Integer) null, null, null, null);

  /*
   * Both of these fields *are* immutable/constant. They don't use the type ImmutableList because
   * they need to behave slightly differently.
   */
  @SuppressWarnings("ConstantCaseForConstants")
  private static final List<Integer> UNDERREPORTING_SIZE_LIST;

    private void deepCopy(MavenProject project) {
        // disown the parent

        // copy fields
        file = project.file;
        basedir = project.basedir;

        // don't need a deep copy, they don't get modified or added/removed to/from - but make them unmodifiable to be
        // sure!
        if (project.getDependencyArtifacts() != null) {

   * {@code lexicographical(Collections.reverseOrder(comparator))} (consider how each would order
   * {@code [1]} and {@code [1, 1]}).
   */
  // Note: 90% of the time we don't add type parameters or wildcards that serve only to "tweak" the
  // desired return type. However, *nested* generics introduce a special class of problems that we
  // think tip it over into being worthwhile.

considered a vulnerability in TensorFlow.

### Resource allocation

A denial of service caused by one model could bring down the entire server, but
we don't consider this as a vulnerability, given that models can exhaust
resources in many different ways and solutions exist to prevent this from
happening (e.g., rate limits, ACLs, monitors to restart broken servers).

    verifyTableSize(100, 5, 8);
    verifyTableSize(100, 33, 64);
    verifyTableSize(60, 60, 128);
    verifyTableSize(120, 60, 256);
    // if the table is only double the necessary size, we don't bother resizing it
    verifyTableSize(180, 60, 128);
    // but if it's even bigger than double, we rebuild the table
    verifyTableSize(17, 17, 32);
    verifyTableSize(17, 16, 32);
    verifyTableSize(17, 15, 32);

In this case, it is an `async` function.

---

You could also define it as a normal function instead of `async def`:

{* ../../docs_src/first_steps/tutorial003_py39.py hl[7] *}

/// note

If you don't know the difference, check the [Async: *"In a hurry?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

///

### Step 5: return the content { #step-5-return-the-content }