/// tip | Astuce

L'attribut `model_config` est utilisé uniquement pour la configuration Pydantic. Vous pouvez en lire davantage ici : [Pydantic : Concepts : Configuration](https://docs.pydantic.dev/latest/concepts/config/).

///

Ici, nous définissons la configuration `env_file` à l'intérieur de votre classe Pydantic `Settings` et lui attribuons le nom du fichier dotenv que nous voulons utiliser.

        assertArgumentNotNull("obj", obj);

        final byte[] binary = fromObjectToBinary(obj);
        return fromBinaryToObject(binary);
    }

    /**
     * Converts an object to a byte array.
     *
     * @param obj the object to serialize (must not be {@literal null})
     * @return the byte array of the object
     */

    public static String toHexString(final int val, final int size) {
        final char[] c = new char[size];
        toHexChars(val, c, 0, size);
        return new String(c);
    }

    /**
     * Converts a long value to a hexadecimal string representation with specified padding.
     *
     * @param val the long value to convert to hexadecimal

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.versioning;

/**
 * Describes an artifact version in terms of its components, converts it to/from a string and
 * compares two versions.
 *
 */
public interface ArtifactVersion extends Comparable<ArtifactVersion> {
    int getMajorVersion();

    int getMinorVersion();

var baseErrs = []error{
	errDiskNotFound,
	errFaultyDisk,
	errFaultyRemoteDisk,
}

var baseIgnoredErrs = baseErrs

// Is a one place function which converts all os.PathError
// into a more FS object layer friendly form, converts
// known errors into their typed form for top level
// interpretation.
func osErrToFileErr(err error) error {
	if err == nil {
		return nil
	}
	if osIsNotExist(err) {

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

Das ist dank **Pydantic** ebenfalls möglich, da es [„`dataclasses` intern unterstützt“](https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel).

{* ../../docs_src/dataclasses_/tutorial001_py310.py hl[1,6:11,18:19] *}

This is still supported thanks to **Pydantic**, as it has [internal support for `dataclasses`](https://docs.pydantic.dev/latest/concepts/dataclasses/#use-of-stdlib-dataclasses-with-basemodel).

So, even with the code above that doesn't use Pydantic explicitly, FastAPI is using Pydantic to convert those standard dataclasses to Pydantic's own flavor of dataclasses.

    String getId();

    /**
     * Gets the version number for this search log event.
     *
     * @return The version number, or null if not versioned
     */
    Long getVersionNo();

    /**
     * Converts this search log event to a source map for indexing or logging.
     *
     * @return Map representation of the event data
     */
    Map<String, Object> toSource();

    /**

{* ../../docs_src/settings/app03_an_py310/config.py hl[9] *}

/// tip | Dica

O atributo `model_config` é usado apenas para configuração do Pydantic. Você pode ler mais em [Pydantic: Concepts: Configuration](https://docs.pydantic.dev/latest/concepts/config/).

///

Aqui definimos a configuração `env_file` dentro da sua classe `Settings` do Pydantic e definimos o valor como o nome do arquivo dotenv que queremos usar.

        dst[++dstIndex] = (byte) (val >>= 8);
        dst[++dstIndex] = (byte) (val >>= 8);
        dst[++dstIndex] = (byte) (val >> 8);
    }

    /**
     * Reads a Windows FILETIME value and converts it to Java time in milliseconds
     * @param src the source byte array
     * @param srcIndex the starting index in the source array
     * @return the time value in milliseconds since January 1, 1970 UTC
     */