# Reference - Code API

Here's the reference or code API, the classes, functions, parameters, attributes, and
all the FastAPI parts you can use in your applications.

If you want to **learn FastAPI** you are much better off reading the

    private fun areClassesOrInterfacesIncompatible(classesOrInterfaces: Collection<ClassDescriptor>): Boolean {
        val classes = classesOrInterfaces.filter { !it.isInterfaceLike }
        return when {
            classes.size >= 2 -> true
            !classes.any { it.isFinalOrEnum } -> false
            classesOrInterfaces.size > classes.size -> true
            else -> false
        }
    }
}

 This is strictly the immutable model for Maven settings in <<<org.apache.maven.api.settings>>> package.

 The following are generated from this model:

   * {{{./apidocs/index.html}Java sources}} with <<<Builder>>> inner classes for immutable instances creation.

 See also corresponding {{{../../maven-settings/index.html}Maven classical settings model documentation}}.

 * limitations under the License.
 */
@file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")

package okhttp3

import java.io.IOException
import okhttp3.internal.SuppressSignatureCheck

/** Data classes that correspond to each of the methods of [ConnectionListener]. */
@SuppressSignatureCheck
sealed class ConnectionEvent {
  abstract val timestampNs: Long
  open val connection: Connection?
    get() = null

  <version>1.1.6</version>
  <name>Plexus Components Parent Project</name>
  <!--
    TODO: should this be pushed down to all the dependencies?
      - a more stable API JAR may be useful, for the interfaces and classes such as AbstractLogEnabled
  -->
  <dependencies>
    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-container-default</artifactId>
      <version>1.0-alpha-8</version>

    But remember that when you import `Query`, `Path`, `Cookie` and others from `fastapi`, those are actually functions that return special classes.

!!! info
    To declare cookies, you need to use `Cookie`, because otherwise the parameters would be interpreted as query parameters.

## Recap

    Aber erinnern Sie sich, dass, wenn Sie `Query`, `Path`, `Cookie` und andere von `fastapi` importieren, diese tatsächlich Funktionen sind, welche spezielle Klassen zurückgeben.

!!! info
    Um Cookies zu deklarieren, müssen Sie `Cookie` verwenden, da diese Parameter sonst als Query-Parameter interpretiert werden würden.

## Zusammenfassung

        // resolve individual parts of it because in FIR, the entire qualified access is one element.
        if (referencedClass.isLocal) {
            // TODO: handle local classes after KT-47135 is fixed
            return referencedSymbolsByFir
        } else {
            var qualifiedAccess: KtDotQualifiedExpression = fullQualifiedAccess
            val referencedClassId =

Pour parler de tâches "synchrones" (en opposition à "asynchrones"), on utilise souvent le terme "séquentiel", car l'ordinateur / le programme va effectuer toutes les étapes d'une tâche séquentiellement avant de passer à une autre tâche, même si ces étapes impliquent de l'attente.

### Concurrence et Burgers

L'idée de code **asynchrone** décrite ci-dessus est parfois aussi appelée **"concurrence"**. Ce qui est différent du **"parallélisme"**.

    * `Optional`
    * ...and others.

=== "Python 3.8+"

    * `List`
    * `Tuple`
    * `Set`
    * `Dict`
    * `Union`
    * `Optional`
    * ...and others.

### Classes as types

You can also declare a class as the type of a variable.

Let's say you have a class `Person`, with a name:

```Python hl_lines="1-3"
{!../../../docs_src/python_types/tutorial010.py!}
```