t.Errorf("Scan into struct map, got %#v", results)
	}

	type ID uint64
	var id ID
	DB.Raw("select id from users where id = ?", user2.ID).Scan(&id)
	if uint(id) != user2.ID {
		t.Errorf("Failed to scan to customized data type")
	}

	var resInt interface{}
	resInt = &User{}
	if err := DB.Table("users").Select("id, name, age").Where("id = ?", user3.ID).Find(&resInt).Error; err != nil {

binary_digit  = "0" | "1" .
octal_digit   = "0" … "7" .
hex_digit     = "0" … "9" | "A" … "F" | "a" … "f" .
</pre>

<h2 id="Lexical_elements">Lexical elements</h2>

<h3 id="Comments">Comments</h3>

<p>
Comments serve as program documentation. There are two forms:
</p>

<ol>
<li>
<i>Line comments</i> start with the character sequence <code>//</code>
and stop at the end of the line.
</li>

  <interactiveMode>false</interactiveMode>
  <profiles>
    <profile>
      <id>oss-development</id>
      <repositories>
        <repository>
          <id>central</id>
          <url>https://repo1.maven.org/maven2/</url>
          <releases>
            <enabled>true</enabled>
            <updatePolicy>never</updatePolicy>

                """
                Custom operation ID to be used by this *path operation*.

                By default, it is generated automatically.

                If you provide a custom operation ID, you need to make sure it is
                unique for the whole API.

                You can customize the
                operation ID generation with the parameter

    )

    /**
     * The peer tells us to stop creating streams. It is safe to replay streams with
     * `ID > lastGoodStreamId` on a new connection.  In- flight streams with
     * `ID <= lastGoodStreamId` can only be replayed on a new connection if they are idempotent.
     *
     * @param lastGoodStreamId the last stream ID the peer processed before sending this message. If
     *     [lastGoodStreamId] is zero, the peer processed no frames.

- `GenerateKey`: Takes a key ID and generates a new data key from a master key referenced by the key ID. It returns the new data key in two different forms: The plain data key and the data key encrypted using the master key.

- `DecryptKey`: Takes a key ID and an encrypted data key and returns the plain data key - the decryption of the encrypted data key using the master key referenced by the key ID - on success or an error otherwise.

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>t05-a</artifactId>
  <packaging>jar</packaging>
  <version>2.0</version>
  <repositories>
    <repository>
      <id>central</id>
      <name>Fake Maven Central Repository</name>
      <url>file://dummy</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>

from pydantic import BaseModel


class Item(BaseModel):
    title: str
    timestamp: datetime
    description: Union[str, None] = None


app = FastAPI()


@app.put("/items/{id}")
def update_item(id: str, item: Item):
    json_compatible_item_data = jsonable_encoder(item)

</div>

## 여러 모델로 애플리케이션 업데이트

이제 애플리케이션을 약간 **리팩토링**하여 **보안**과 **유연성**을 개선해 보겠습니다.

이전 애플리케이션의 UI를 보면, 지금까지는 클라이언트가 생성할 `Hero`의 `id`를 직접 지정할 수 있다는 것을 알 수 있습니다. 😱

이는 허용되어선 안 됩니다. 클라이언트가 이미 데이터베이스에 저장된 `id`를 덮어쓸 위험이 있기 때문입니다. `id`는 **백엔드** 또는 **데이터베이스**가 결정해야 하며, **클라이언트**가 결정해서는 안 됩니다.

또한 hero의 `secret_name`을 생성하긴 했지만, 지금까지는 이 값을 어디에서나 반환하고 있습니다. 이는 그다지 **비밀스럽지** 않습니다... 😅

import (
	"encoding/json"
	"fmt"
	"strings"
)

// TargetID - holds identification and name strings of notification target.
type TargetID struct {
	ID   string
	Name string
}

// String - returns string representation.
func (tid TargetID) String() string {
	return tid.ID + ":" + tid.Name
}

// ToARN - converts to ARN.
func (tid TargetID) ToARN(region string) ARN {
	return ARN{TargetID: tid, region: region}
}