public static function Inspector::assertAllStrings in Drupal 9

Same name and namespace in other branches

1. 8 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.

14 calls to Inspector::assertAllStrings()

ApcuBackend::set in core/lib/Drupal/Core/Cache/ApcuBackend.php

Stores data in the persistent cache.

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.

CacheTagsInvalidator::invalidateTags in core/lib/Drupal/Core/Cache/CacheTagsInvalidator.php

Marks cache items with any of the specified tags as invalid.

Connection::__construct in core/lib/Drupal/Core/Database/Connection.php

Constructs a Connection object.

... See full list

File

core/lib/Drupal/Component/Assertion/Inspector.php, line 77

Class

Inspector

Generic inspections for the assert() statement.

Namespace

Drupal\Component\Assertion

Code

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