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## FastAPI auf X (Twitter) folgen { #follow-fastapi-on-x-twitter }

 * Abstract base class for [Task][org.gradle.api.Task]s that verify and manipulate the given accepted API changes file.
 */
@CacheableTask
abstract class AbstractAcceptedApiChangesMaintenanceTask : DefaultTask() {

    /**
     * A directory that contains jsons with accepted API changes.
     * Any json is a directory is considered to contain accepted API changes.
     */
    @get:InputDirectory
    @get:PathSensitive(PathSensitivity.RELATIVE)

API changes and other small changes to the standard library go here....

use a synchronization mechanism such as a lock or channel
communication to establish a relative ordering.
</p>

<h3 id="chan">Channel communication</h3>

<p>
Channel communication is the main method of synchronization
between goroutines.  Each send on a particular channel
is matched to a corresponding receive from that channel,
usually in a different goroutine.
</p>

<p class="rule">

- [ ] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
- [ ] Each commit in the pull request should have a meaningful subject line and body.
  Note that commits might be squashed by a maintainer on merge.
- [ ] Write unit tests that match behavioral changes, where the tests fail if the changes to the runtime are not applied.

            }
        }

        boolean changed;

        // If file could not be found or was not valid, start from scratch
        if (metadata == null) {
            metadata = this.metadata;

            changed = true;
        } else {
            changed = metadata.merge(this.metadata);
        }

        // beware meta-versions!

             <b>fastapi run</b>

             Logs:

     <span style="background-color:#007166"><font color="#D3D7CF"> INFO </font></span>  Will watch for changes in these directories:
             <b>[</b><font color="#4E9A06">&apos;/home/user/code/awesomeapp&apos;</font><b>]</b>

Mais malheureusement, rien d'utile n'en résulte :

<img src="/img/python-types/image01.png">

### Ajouter des types

Modifions une seule ligne de la version précédente.

Nous allons changer seulement cet extrait, les paramètres de la fonction, de :


```Python
    first_name, last_name
```

à :

```Python
    first_name: str, last_name: str
```

C'est tout.

import groovy.transform.ToString

@Immutable @ToString
class AcceptedApiChange {
    String type
    String member
    String acceptation
    List<String> changes

    ApiChange toApiChange() {
        return new ApiChange(type, member, changes ?: [])
    }

package cmd

import "strconv"

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the stringer command to generate them again.
	var x [1]struct{}
	_ = x[invalidVersionType-0]
	_ = x[ObjectType-1]
	_ = x[DeleteType-2]
	_ = x[LegacyType-3]
	_ = x[lastVersionType-4]
}