PHP Collection::last方法代码示例

 /**
  * Handle every iteration of the parsing process.
  *
  * @param  \pandaac\Exporter\Contracts\Reader  $reader
  * @param  \Illuminate\Support\Collection  $collection
  * @return \Illuminate\Support\Collection
  */
 public function iteration(Reader $reader, Collection $collection)
 {
     // Item information
     if ($iteration = $this->item($reader)) {
         $collection->push($iteration);
     }
     if (!($reader->isElement() or $reader->isAttribute())) {
         return $collection;
     }
     if ($this->enabled('attributes')) {
         // Item attributes
         if ($iteration = $this->itemAttributes($reader)) {
             $item = $collection->last();
             if (!$item->get('attributes')) {
                 $item->put('attributes', new Collection());
             }
             $item->get('attributes')->push($iteration);
             return $collection;
         }
         if ($this->enabled('properties')) {
             // Item attribute properties
             if ($iteration = $this->itemAttributeProperties($reader)) {
                 $attribute = $collection->last()->get('attributes')->last();
                 if (!$attribute->get('properties')) {
                     $attribute->put('properties', new Collection());
                 }
                 $attribute->get('properties')->push($iteration);
                 return $collection;
             }
         }
     }
     return $collection;
 }

 /**
  * Get the winner of the Round
  * @return bool|Player
  */
 public function victor()
 {
     if ($this->battles->isEmpty()) {
         return false;
     }
     return $this->battles->last()->victor();
 }

 /**
  * Renders the crumbs in the configured view.
  *
  * @return string
  */
 public function renderCrumbs()
 {
     $view = app()->make(View::class);
     $partial = config('ferrl.breadcrumb');
     $path = $this->path;
     $last = $this->path->last();
     return $view->make($partial, compact('path', 'last'))->render();
 }

 /**
  * Parse the detailed information from the monster file.
  *
  * @param  \pandaac\Exporter\Contracts\Reader  $reader
  * @param  \Illuminate\Support\Collection  $collection
  * @return \Illuminate\Support\Collection
  */
 protected function details(Reader $reader, Collection $collection)
 {
     $monster = $collection->last();
     if (!($path = $monster->get('path'))) {
         return false;
     }
     return $this->parseMonster($reader, $path);
 }

 public function getUserTrends(Collection $rounds)
 {
     $first = $rounds->first();
     $last = $rounds->last();
     $totalRounds = $rounds->count();
     $strokes = ($last->totalStrokes() - $first->totalStrokes()) / $totalRounds;
     $putts = ($last->totalPutts() - $first->totalPutts()) / $totalRounds;
     $strokesPar3 = ($last->totalStrokesPar(3) - $first->totalStrokesPar(3)) / $totalRounds;
     $strokesPar4 = ($last->totalStrokesPar(4) - $first->totalStrokesPar(4)) / $totalRounds;
     $strokesPar5 = ($last->totalStrokesPar(5) - $first->totalStrokesPar(5)) / $totalRounds;
     return compact('strokes', 'putts', 'strokesPar3', 'strokesPar4', 'strokesPar5');
 }

 /**
  * Handle every iteration of the parsing process.
  *
  * @param  \pandaac\Exporter\Contracts\Reader  $reader
  * @param  \Illuminate\Support\Collection  $collection
  * @return \Illuminate\Support\Collection
  */
 public function iteration(Reader $reader, Collection $collection)
 {
     // Vocation information
     if ($reader->is('vocation') and $iteration = $this->vocation($reader)) {
         $collection->push($iteration);
     }
     $vocation = $collection->last();
     // Vocation formula
     if ($this->enabled('formula') and $formula = $this->formula($reader)) {
         $vocation->put('formula', $formula);
     }
     // Vocation skills
     if ($this->enabled('skills') and $skill = $this->skill($reader)) {
         $vocation->get('skills')->push($skill);
     }
     return $collection;
 }

 /**
  *  取得 集合中 满足 闭包条件的  第一个元素 first
  *  首先 call  Collection 的 first method
  *  first method call Arr::first($this->items, $callback, $default);
  *  它返回的是一个值
  *
  *  对应的
  * 取得 集合中 满足 闭包条件的  最后一个元素 last
  */
 public function first()
 {
     debug($this->collection);
     //返回第一个满足条件的 $value
     $first = $this->collection->first(function ($key, $value) {
         return $value['price'] == 100;
     });
     debug($first);
     $last = $this->collection->last(function ($key, $value) {
         return $value['price'] == 100;
     });
     debug($last);
     //这里就直接返回第一个集合元素
     $first = $this->collection->first();
     debug($first);
     return view('index');
 }

 /**
  * Handle every iteration of the parsing process.
  *
  * @param  \pandaac\Exporter\Contracts\Reader  $reader
  * @param  \Illuminate\Support\Collection  $collection
  * @return \Illuminate\Support\Collection
  */
 public function iteration(Reader $reader, Collection $collection)
 {
     // Quest information
     if ($reader->is('quest') and $iteration = $this->quest($reader)) {
         $collection->push($iteration);
     }
     // Quest missions
     if ($this->enabled('missions')) {
         $quest = $collection->last();
         // Mission information
         if ($iteration = $this->mission($reader)) {
             $quest->last()->push($iteration);
         }
         // Mission states
         if ($this->enabled('states')) {
             if ($iteration = $this->missionState($reader)) {
                 $quest->get('missions')->last()->get('states')->put($iteration->get('id'), $iteration->get('description'));
             }
         }
     }
     return $collection;
 }

 /**
  * Remove the last prefix if it matches the controller.
  *
  * @param \Illuminate\Support\Collection $prefixes
  *
  * @return mixed
  */
 protected function removeControllerFromPrefixes($prefixes)
 {
     if ($prefixes->last() == $this->controller) {
         $prefixes->pop();
     }
     return $prefixes;
 }

 public function testLastWithDefaultAndWithoutCallback()
 {
     $data = new Collection();
     $result = $data->last(null, 'default');
     $this->assertEquals('default', $result);
 }

 /**
  * Remove Label
  *
  * @return $this
  */
 public function withoutLabel()
 {
     $this->form->last()->forget('label');
     return $this;
 }

 /**
  * @return Record|null
  */
 public function last()
 {
     return $this->results->last();
 }

 /**
  * Get the current flash message.
  * 
  * @return string
  */
 public function getMessage()
 {
     return $this->current->last()->message;
 }

 /**
  * @return $this
  */
 private function setClassName()
 {
     return $this->writeInTemplate("class_name", $this->endpoint->last());
 }