minor #414 [Examples] Add and use print_vectors() function (OskarStark)

This PR was squashed before being merged into the main branch.

Discussion
----------

[Examples] Add and use `print_vectors()` function

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        | --
| License       | MIT

Commits
-------

5339140 [Examples] Add and use `print_vectors()` function

Author: OskarStark

examples/azure/embeddings.php

@@ -29,4 +29,4 @@
     country was very peaceful and prosperous. The people lived happily ever after.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/bootstrap.php

@@ -13,6 +13,7 @@
 use Psr\Log\LoggerInterface;
 use Symfony\AI\Platform\Metadata\Metadata;
 use Symfony\AI\Platform\Metadata\TokenUsage;
+use Symfony\AI\Platform\Result\ResultPromise;
 use Symfony\Component\Console\Logger\ConsoleLogger;
 use Symfony\Component\Console\Output\ConsoleOutput;
 use Symfony\Component\Dotenv\Dotenv;
@@ -71,3 +72,11 @@ function print_token_usage(Metadata $metadata): void
     echo 'Remaining tokens: '.$tokenUsage->remainingTokens.\PHP_EOL;
     echo 'Utilized tokens: '.$tokenUsage->totalTokens.\PHP_EOL;
 }
+
+function print_vectors(ResultPromise $result): void
+{
+    assert([] !== $result->asVectors());
+    assert(array_key_exists(0, $result->asVectors()));
+
+    echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+}

examples/gemini/embeddings.php

@@ -23,4 +23,4 @@
     country was very peaceful and prosperous. The people lived happily ever after.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/huggingface/feature-extraction.php

@@ -22,4 +22,4 @@
     'task' => Task::FEATURE_EXTRACTION,
 ]);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/misc/parallel-embeddings.php

@@ -28,5 +28,5 @@
 
 echo 'Waiting for the responses ...'.\PHP_EOL;
 foreach ($results as $result) {
-    echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+    print_vectors($result);
 }

examples/mistral/embeddings.php

@@ -24,4 +24,4 @@
     salt. The goal was to prevent deficiencies and promote better health in the population.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/openai/embeddings.php

@@ -23,4 +23,4 @@
     country was very peaceful and prosperous. The people lived happily ever after.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/vertexai/embeddings.php

@@ -23,4 +23,4 @@
     country was very peaceful and prosperous. The people lived happily ever after.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);

examples/voyage/embeddings.php

@@ -23,4 +23,4 @@
     country was very peaceful and prosperous. The people lived happily ever after.
     TEXT);
 
-echo 'Dimensions: '.$result->asVectors()[0]->getDimensions().\PHP_EOL;
+print_vectors($result);