Pydanticについてより学びたい方は<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">ドキュメントを参照してください</a>.

///

**FastAPI** はすべてPydanticをベースにしています。

すべてのことは[チュートリアル - ユーザーガイド](tutorial/index.md){.internal-link target=_blank}で実際に見ることができます。

## **FastAPI**での型ヒント

**FastAPI** はこれらの型ヒントを利用していくつかのことを行います。

**FastAPI** では型ヒントを使って型パラメータを宣言すると以下のものが得られます:

* **エディタサポート**.
* **型チェック**.

// internal buffer only needs to be resliced.
// It returns the index where bytes should be written and whether it succeeded.
func (b *Buffer) tryGrowByReslice(n int) (int, bool) {
	if l := len(b.buf); n <= cap(b.buf)-l {
		b.buf = b.buf[:l+n]
		return l, true
	}
	return 0, false
}

// grow grows the buffer to guarantee space for n more bytes.
// It returns the index where bytes should be written.

    //                                                                      ==============
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        validate(form, messages -> {}, this::asDictIndexHtml);
        charMappingPager.clear();
        return asHtml(path_AdminDictMapping_AdminDictMappingJsp).renderWith(data -> {

    }

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

    @Override
    Multiset.Entry<K> getEntry(int index) {
      Map.Entry<K, ? extends Collection<V>> entry = map.entrySet().asList().get(index);
      return Multisets.immutableEntry(entry.getKey(), entry.getValue().size());
    }

    @Override
    boolean isPartialView() {
      return true;
    }

```Python hl_lines="1  4-6" title="app/dependencies.py"
{!../../docs_src/bigger_applications/app/dependencies.py!}
```

/// tip

👥 ⚙️ 💭 🎚 📉 👉 🖼.

✋️ 🎰 💼 👆 🔜 🤚 👍 🏁 ⚙️ 🛠️ [💂‍♂ 🚙](security/index.md){.internal-link target=_blank}.

///

## ➕1️⃣ 🕹 ⏮️ `APIRouter`

➡️ 💬 👆 ✔️ 🔗 💡 🚚 "🏬" ⚪️➡️ 👆 🈸 🕹 `app/routers/items.py`.

👆 ✔️ *➡ 🛠️* :

* `/items/`
* `/items/{item_id}`

    //                                                                      ==============
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        return asListHtml();
    }

    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse list(final OptionalThing<Integer> pageNumber, final SearchForm form) {

  - Set number the object operation was performed on.
  - The list of drives participating in this operation belong to the set.

## Explore Further

- [MinIO Quickstart Guide](https://min.io/docs/minio/linux/index.html#quickstart-for-linux)

func isHostIP(ipAddress string) bool {
	host, _, err := net.SplitHostPort(ipAddress)
	if err != nil {
		host = ipAddress
	}
	// Strip off IPv6 zone information.
	if i := strings.Index(host, "%"); i > -1 {
		host = host[:i]
	}
	return net.ParseIP(host) != nil
}

// extractHostPort - extracts host/port from many address formats
// such as, ":9000", "localhost:9000", "http://localhost:9000/"

fam.pk
biz.pk
web.pk
gov.pk
gob.pk
gok.pk
gon.pk
gop.pk
gos.pk
info.pk

// pl http://www.dns.pl/english/index.html
// Submitted by registry
pl
com.pl
net.pl
org.pl
// pl functional domains (http://www.dns.pl/english/index.html)
aid.pl
agro.pl
atm.pl
auto.pl
biz.pl
edu.pl
gmina.pl
gsm.pl
info.pl
mail.pl
miasta.pl
media.pl

            AdminMaintenanceAction.ROLE, //
            AdminMaintenanceAction.ROLE + VIEW, //
            AdminEsreqAction.ROLE, //
            AdminEsreqAction.ROLE + VIEW,//

    })
    public HtmlResponse index() {
        return redirect(getUserBean().map(user -> {
            final Class<? extends FessAdminAction> actionClass = getAdminActionClass(user);
            if (actionClass != null) {
                return actionClass;