}
    return -1;
  }

  /**
   * Returns the start position of the first occurrence of the specified {@code target} within
   * {@code array}, or {@code -1} if there is no such occurrence.
   *
   * <p>More formally, returns the lowest index {@code i} such that {@code Arrays.copyOfRange(array,
   * i, i + target.length)} contains exactly the same elements as {@code target}.
   *

Let's continue from the previous example. We wanted to **annotate the function with one type**, but we wanted to be able to return from the function something that actually includes **more data**.

We want FastAPI to keep **filtering** the data using the response model. So that even though the function returns more data, the response will only include the fields declared in the response model.

        That's a lot of work they are doing, but if more FastAPI users came to help others like them just a little bit more, it would be much less effort for them (and you and me 😅).

        By asking questions in a structured way (following this) it will be much easier to help you.

      primary: teal
      accent: blue
      toggle:
        icon: octicons/sun-24
        name: "Switch to Dark Mode"
    - media: "(prefers-color-scheme: dark)"
      scheme: slate
      primary: teal
      accent: blue
      toggle:
        icon: octicons/moon-24
        name: "Switch to Light Mode"
  features:
  - navigation.tabs

extra_css:
  - 'assets/css/app.css'

markdown_extensions:
  - smarty

constraints.Mod11Check.message = Suma kontrolna Modulo 11 dla {value} jest nieprawidłowa.
constraints.ModCheck.message = Suma kontrolna {modType} dla {value} jest nieprawidłowa.
constraints.NotBlank.message = {item} nie może być puste.
constraints.NotEmpty.message = {item} nie może być puste.
constraints.ParametersScriptAssert.message = Wyrażenie skryptowe "{script}" nie jest prawdziwe.
constraints.Range.message = {item} musi być w zakresie od {min} do {max}.

Hello Wade Wilson from Python

// The env var no longer exists afterwards
$ python main.py

Hello World from Python
```

</div>

/// tip

You can read more about it at <a href="https://12factor.net/config" class="external-link" target="_blank">The Twelve-Factor App: Config</a>.

///

## Types and Validation { #types-and-validation }

labels.elevateWordFile=Elevate Word File
labels.badWordFile=Bad Word File
labels.urlExpr=Condition
labels.boostExpr=Boost Expression
labels.confirmPassword=Confirm
labels.crawler=Crawler
labels.crudMode=Mode
labels.errorCountMax=Max Error Count
labels.errorCountMin=Min Error Count
labels.facet=Facet
labels.geo=Geo
labels.groups=Groups
labels.hash=Hash
labels.kuromojiFile=Kuromoji File
labels.maxSize=Max Size

   * more elements, and a {@code NoSuchElementException} if the stream is empty.
   */
  @SuppressWarnings("unchecked")
  public static <T extends @Nullable Object> Collector<T, ?, T> onlyElement() {
    return (Collector) ONLY_ELEMENT;
  }

  /**
   * This atrocity is here to let us report several of the elements in the stream if there were more
   * than one, not just two.
   */

And it normally is a complex and "difficult" topic.

In many frameworks and systems just handling security and authentication takes a big amount of effort and code (in many cases it can be 50% or more of all the code written).

**FastAPI** provides several tools to help you deal with **Security** easily, rapidly, in a standard way, without having to study and learn all the security specifications.

  @Param({"1000", "2000"})
  int maximumSize;

  @Param("5000")
  int distinctKeys;

  @Param("4")
  int segments;

  // 1 means uniform likelihood of keys; higher means some keys are more popular
  // tweak this to control hit rate
  @Param("2.5")
  double concentration;

  Random random = new Random();

  LoadingCache<Integer, Integer> cache;

  int max;