Same name and namespace in other branches
  1. 8.9.x core/lib/Drupal/Component/Assertion/Inspector.php \Drupal\Component\Assertion\Inspector::assertAllStrings()
  2. 9 core/lib/Drupal/Component/Assertion/Inspector.php \Drupal\Component\Assertion\Inspector::assertAllStrings()

Asserts that all members are strings.

Use this only if it is vital that the members not be objects, otherwise test with ::assertAllStringable().

Parameters

mixed $traversable: Variable to be examined.

Return value

bool TRUE if $traversable can be traversed and all members are strings.

13 calls to Inspector::assertAllStrings()
Cache::mergeTags in core/lib/Drupal/Core/Cache/Cache.php
Merges arrays of cache tags and removes duplicates.
CacheCollector::__construct in core/lib/Drupal/Core/Cache/CacheCollector.php
Constructs a CacheCollector object.
CKEditor4To5UpgradePluginManager::validateAndBuildMaps in core/modules/ckeditor5/src/Plugin/CKEditor4To5UpgradePluginManager.php
Validates plugin definitions: avoids conflicts. Builds maps for later use.
CKEditor5PluginDefinition::validateDrupalAspects in core/modules/ckeditor5/src/Plugin/CKEditor5PluginDefinition.php
Validates the Drupal aspects of the CKEditor 5 plugin definition.
CKEditor5PluginManager::getProvidedElements in core/modules/ckeditor5/src/Plugin/CKEditor5PluginManager.php

... See full list

File

core/lib/Drupal/Component/Assertion/Inspector.php, line 83

Class

Inspector
Generic inspections for the assert() statement.

Namespace

Drupal\Component\Assertion

Code

public static function assertAllStrings($traversable) {
  return static::assertAll('is_string', $traversable);
}