lithium\util\Collection::reduce PHP Method

Collection Class Documentation Usage Examples Of lithium\util\Collection::reduce Show file Open project: unionofrad/lithium

reduce() public method

Reduce, or fold, a collection down to a single value

See link: http://php.net/array_reduce

public reduce ( callback $reducer, mixed $initial = false ) : mixed
$reducer	callback	The reduce function, i.e. `function($carry, $item) { return ... }`
$initial	mixed	Initial value passed to the reduce function as `$carry`, defaults to `false`.
return	mixed	A single reduced value.

    public function reduce($reducer, $initial = false)
    {
        return array_reduce($this->_data, $reducer, $initial);
    }

Usage Example

Example #1

Show file

File: CollectionTest.php Project: rmarscher/lithium

 public function testCollectionReduceFilter()
 {
     $collection = new Collection(array('data' => array(1, 2, 3)));
     $filter = function ($memo, $item) {
         return $memo + $item;
     };
     $result = $collection->reduce($filter, 0);
     $this->assertEqual(6, $collection->reduce($filter, 0));
     $this->assertEqual(7, $collection->reduce($filter, 1));
 }

All Usage Examples Of lithium\util\Collection::reduce

Collection

__call

_init

_to

append

count

current

each

end

find

first