## Testen, ob die virtuelle Umgebung aktiv ist { #check-the-virtual-environment-is-active }

Testen Sie, dass die virtuelle Umgebung aktiv ist (der vorherige Befehl funktioniert hat).

/// tip | Tipp

Dies ist **optional**, aber es ist eine gute Möglichkeit, **zu überprüfen**, ob alles wie erwartet funktioniert und Sie die beabsichtigte virtuelle Umgebung verwenden.

///

//// tab | Linux, macOS, Windows Bash

<div class="termy">

///

## Check the Virtual Environment is Active { #check-the-virtual-environment-is-active }

Check that the virtual environment is active (the previous command worked).

/// tip

This is **optional**, but it's a good way to **check** that everything is working as expected and you are using the virtual environment you intended.

///

//// tab | Linux, macOS, Windows Bash

<div class="termy">

    agent.
 *  New: Guava-like API to create headers:

    ```java
    Headers headers = Headers.of(name1, value1, name2, value2, ...).
    ```

 *  New: Make the content-type header optional for request bodies.
 *  New: `Response.isSuccessful()` is a convenient API to check response codes.
 *  New: The response body can now be read outside of the callback. Response

/// check | Inspired **FastAPI** to

Find ways to get great performance.

Along with Hug (as Hug is based on Falcon) inspired **FastAPI** to declare a `response` parameter in functions.

Although in FastAPI it's optional, and is used mainly to set headers, cookies, and alternative status codes.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a> { #molten }

/// check | Inspirierte **FastAPI**

Wege zu finden, eine großartige Performanz zu erzielen.

Zusammen mit Hug (da Hug auf Falcon basiert), einen `response`-Parameter in Funktionen zu deklarieren.

Obwohl er in FastAPI optional ist und hauptsächlich zum Festlegen von Headern, Cookies und alternativen Statuscodes verwendet wird.

///

### <a href="https://moltenframework.com/" class="external-link" target="_blank">Molten</a> { #molten }

        if (src != null) {
            if (sourceDominant || target.getOptional() == null) {
                target.setOptional(src);
                target.setLocation("optional", source.getLocation("optional"));
            }
        }
    }

    protected void mergeDependency_Exclusions(
            Dependency target, Dependency source, boolean sourceDominant, Map<Object, Object> context) {

   * count, and a blank line.
   *
   * Each of the subsequent lines in the file is a record of the state of a cache entry. Each line
   * contains space-separated values: a state, a key, and optional state-specific values.
   *
   *   o DIRTY lines track that an entry is actively being created or updated. Every successful
   *     DIRTY action should be followed by a CLEAN or REMOVE action. DIRTY lines without a matching

				Content:  []byte("important \r\n"),
				Modified: time.Date(2011, 12, 8, 10, 6, 8, 0, timeZone(0)),
				Mode:     0444,
			},
		},
	},
	{
		// created by Go, before we wrote the "optional" data
		// descriptor signatures (which are required by macOS).
		// Use obscured file to avoid Apple’s notarization service
		// rejecting the toolchain due to an inability to unzip this archive.

	// indicates if the disk is being healed and scanner
	// should skip healing the disk
	SkipHealing bool

	// Active lifecycle, if any on the bucket
	lifeCycle *lifecycle.Lifecycle `msg:"-"`

	// optional updates channel.
	// If set updates will be sent regularly to this channel.
	// Will not be closed when returned.
	updates     chan<- dataUsageEntry `msg:"-"`
	replication replicationConfig     `msg:"-"`
}

					Value:  clause.Column{Table: rel.JoinTable.Table, Name: ref.ForeignKey.DBName},
				})
			}
		}

		// EXISTS related: related.pk = join.rel_fk for all related refs, plus optional conditions
		relatedExists := base.Session(&Session{NewDB: true, Context: ctx}).Table(rel.FieldSchema.Table).Select("1")
		for _, ref := range rel.References {
			if !ref.OwnPrimaryKey && ref.PrimaryKey != nil {