0, macSigningKey, 16, 24);
                break;
            case 3:
            case 4:
            case 5:
                macSigningKey = new byte[16];
                auth.getUserSessionKey(transport.server.encryptionKey, macSigningKey, 0);
                break;
            default:
                macSigningKey = new byte[40];

## Depreciar uma *operação de rota*

Se você precisar marcar uma *operação de rota* como <abbr title="obsoleta, recomendada não usá-la">descontinuada</abbr>, mas sem removê-la, passe o parâmetro `deprecated`:

```Python hl_lines="16"
{!../../docs_src/path_operation_configuration/tutorial006.py!}
```

Ela será claramente marcada como descontinuada nas documentações interativas:

<img src="/img/tutorial/path-operation-configuration/image04.png">

 
 #ifndef _UTMP_H
 # error "Never include <bits/utmp.h> directly; use <utmp.h> instead."
@@ -24,11 +24,13 @@
 #include <time.h>
 
 
-#define	UT_NAMESIZE	8
-#define	UT_LINESIZE	8
-#define	UT_HOSTSIZE	16
+#define UT_LINESIZE	32
+#define UT_NAMESIZE	32
+#define UT_HOSTSIZE	256
 
 
+/* The structure describing an entry in the database of
+   previous logins.  */
 struct lastlog
   {
     time_t ll_time;

        }
        return outData;
    }

    private static void encode(final byte[] inData, final int inIndex, final char[] outData, final int outIndex) {

        final int i = ((inData[inIndex] & 0xff) << 16) + ((inData[inIndex + 1] & 0xff) << 8) + (inData[inIndex + 2] & 0xff);
        outData[outIndex] = ENCODE_TABLE[i >> 18];
        outData[outIndex + 1] = ENCODE_TABLE[i >> 12 & 0x3f];

🚥 👆 💭, "📊", "🎓", &amp; "🍏" 📛 🎰 🏫 <abbr title="Technically, Deep Learning model architectures">🏷</abbr>.

///

### 📣 *➡ 🔢*

⤴️ ✍ *➡ 🔢* ⏮️ 🆎 ✍ ⚙️ 🔢 🎓 👆 ✍ (`ModelName`):

```Python hl_lines="16"
{!../../docs_src/path_params/tutorial005.py!}
```

### ✅ 🩺

↩️ 💪 💲 *➡ 🔢* 🔢, 🎓 🩺 💪 🎦 👫 🎆:

<img src="/img/tutorial/path-params/image03.png">

### 👷 ⏮️ 🐍 *🔢*

  // endpoint. These key/value pairs must conform with the label format.
  // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
  // Topology may include a maximum of 16 key/value pairs. This includes, but
  // is not limited to the following well known keys:
  // * kubernetes.io/hostname: the value indicates the hostname of the node

  // +optional
  optional bool hostIPC = 13;

  // Specifies the hostname of the Carp
  // If not specified, the carp's hostname will be set to a system-defined value.
  // +optional
  optional string hostname = 16;

  // If specified, the fully qualified Carp hostname will be "<hostname>.<subdomain>.<carp namespace>.svc.<cluster domain>".
  // If not specified, the carp will not have a domainname at all.
  // +optional

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## パラメータとして宣言

*パスオペレーション* に加えるために、パスパラメータやクエリパラメータと同じ様に宣言します:

```Python hl_lines="16"
{!../../docs_src/body/tutorial001.py!}
```

...そして、作成したモデル `Item` で型を宣言します。

## 結果

そのPythonの型宣言だけで **FastAPI** は以下のことを行います:

* リクエストボディをJSONとして読み取ります。
* 適当な型に変換します（必要な場合）。
* データを検証します。

build --distinct_host_configuration=false

# Disable clang extension that rejects type definitions within offsetof. 
# This was added in clang-16 by https://reviews.llvm.org/D133574.
# Can be removed once upb is updated, since a type definition is used within
# offset of in the current version of ubp.

const (
	true  = 0 == 0 // Untyped bool.
	false = 0 != 0 // Untyped bool.
)

// uint8 is the set of all unsigned 8-bit integers.
// Range: 0 through 255.
type uint8 uint8

// uint16 is the set of all unsigned 16-bit integers.
// Range: 0 through 65535.
type uint16 uint16

// uint32 is the set of all unsigned 32-bit integers.
// Range: 0 through 4294967295.
type uint32 uint32