PHP Collection::clear方法代碼示例

 /**
  * Set the list of roles
  * @param Collection $roles
  */
 public function setRoles(Collection $roles)
 {
     $this->roles->clear();
     foreach ($roles as $role) {
         $this->roles[] = $role;
     }
 }

 /**
  * setGroups
  *
  * Set the users groups.
  *
  * @param  UserGroup[]|\Traversable  $groups  The collection of user groups to set.
  *
  * @return $this
  */
 public function setGroups($groups)
 {
     $this->groups->clear();
     foreach ($groups as $group) {
         $this->addGroup($group);
     }
     return $this;
 }

 /**
  * Set tags
  *
  * @param Collection $tags Tags
  *
  * @return Product self Object
  */
 public function setTags(Collection $tags)
 {
     $this->tags->clear();
     if (!$tags->isEmpty()) {
         foreach ($tags as $tag) {
             $this->addTag($tag);
         }
     }
     return $this;
 }

 /**
  * setUsers
  *
  * Replace all current users with the provided collection.
  *
  * @param  UserInterface[]|Collection  $users  The new users collection to set.
  *
  * @return $this
  * @throws Exception\InvalidArgumentException  If the collection is not an array or \Traversable instance.
  */
 public function setUsers($users)
 {
     if (!is_array($users) && !$users instanceof \Traversable) {
         throw new Exception\InvalidArgumentException(sprintf('The \'users\' argument must be an \'array\' or object of type \'%s\'; \'%s\' given in \'%s\'', \Traversable::class, is_object($users) ? get_class($users) : gettype($users), __METHOD__));
     }
     $this->users->clear();
     foreach ($users as $user) {
         $this->addUser($user);
     }
     return $this;
 }

 /**
  * Map a data to a collection of model objects.
  *
  * @param array $data An array of data.
  * @param callable $callable The callable you want to call for each row of data.
  * @return Collection A collection of objects.
  */
 protected function mapToObjects(array $data, callable $callable = null)
 {
     $this->collection->clear();
     if (count($data) > 0) {
         foreach ($data as $row) {
             if (is_callable($callable)) {
                 $this->collection->add(call_user_func($callable, $row));
             } else {
                 $this->collection->add($this->instantiateObject($row));
             }
         }
     }
     return clone $this->collection;
 }

 /**
  * @param TranslationInterface[]|Collection $translations
  */
 public function setTranslations($translations)
 {
     $this->translations->clear();
     foreach ($translations as $translation) {
         $this->addTranslation($translation);
     }
 }

 /**
  * {@inheritdoc}
  */
 public function clear()
 {
     if ($this->initialized && $this->isEmpty()) {
         return;
     }
     if ($this->isOrphanRemovalEnabled()) {
         $this->initialize();
         foreach ($this->coll as $element) {
             $this->uow->scheduleOrphanRemoval($element);
         }
     }
     $this->mongoData = array();
     $this->coll->clear();
     // Nothing to do for inverse-side collections
     if (!$this->mapping['isOwningSide']) {
         return;
     }
     // Nothing to do if the collection was initialized but contained no data
     if ($this->initialized && empty($this->snapshot)) {
         return;
     }
     $this->changed();
     $this->uow->scheduleCollectionDeletion($this);
     $this->takeSnapshot();
 }

 public function testClear()
 {
     $this->_coll[] = 'one';
     $this->_coll[] = 'two';
     $this->_coll->clear();
     $this->assertEquals($this->_coll->isEmpty(), true);
 }

 /**
  * {@inheritdoc}
  */
 public function setVariants(Collection $variants)
 {
     $this->variants->clear();
     foreach ($variants as $variant) {
         $this->addVariant($variant);
     }
 }

 /**
  * Sets this variant option values.
  *
  * @param Collection $options
  *
  * @return $this Self object
  */
 public function setOptions(Collection $options)
 {
     /*
      * We want to be able to assign an empty
      * ArrayCollection to variant options
      *
      * When the collection is not empty, each
      * option in the collection will be added
      * separately since it needs to update the
      * parent product attribute list
      */
     if ($options->isEmpty()) {
         $this->options = $options;
     } else {
         $this->options->clear();
     }
     /**
      * @var ValueInterface $option
      */
     foreach ($options as $option) {
         /*
          * We need to update the parent product attribute collection
          */
         $this->addOption($option);
     }
     return $this;
 }

 /**
  * Set addresses.
  *
  * This method could not be named setAddresses because of bug CRM-253.
  *
  * @param Collection|AbstractAddress[] $addresses
  * @return BasePerson
  */
 public function resetAddresses($addresses)
 {
     $this->addresses->clear();
     foreach ($addresses as $address) {
         $this->addAddress($address);
     }
     return $this;
 }

 /**
  * Set children locales
  *
  * @param Collection|Locale[] $locales
  *
  * @return Locale
  */
 public function resetLocales($locales)
 {
     $this->childLocales->clear();
     foreach ($locales as $locale) {
         $this->addChildLocale($locale);
     }
     return $this;
 }

 /**
  * {@inheritdoc}
  */
 public function clear()
 {
     if ($this->initialized && $this->isEmpty()) {
         return;
     }
     $this->coll->clear();
     $this->changed();
     $this->takeSnapshot();
 }

 /**
  * {@inheritdoc}
  */
 public function clear()
 {
     $this->_initialize();
     $result = $this->_coll->clear();
     if ($this->_mapping->isOwningSide) {
         $this->_changed();
         $this->_dm->getUnitOfWork()->scheduleCollectionDeletion($this);
     }
     return $result;
 }

 /**
  * {@inheritDoc}
  */
 public function partition(Closure $p)
 {
     $array = $this->toArray();
     $this->collection->clear();
     foreach ($array as $key => $element) {
         $this->collection->set($key, $element);
     }
     $partitions = $this->collection->partition($p);
     return [new static($partitions[0]), new static($partitions[1])];
 }