Collection::flip() - Code Metrics - Inspection of "97% code coverage" - Novactive/NovaCollection - Measure and Improve Code Quality continuously with Scrutinizer

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Push — develop ( a1ecb7...a37349 )

by Sébastien

created 2017-02-20 04:00 UTC

Collection::flip() A

↳ Parent: Collection

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	5
nc	2
nop	0
dl	0
loc	9
ccs	6
cts	6
cp	1
crap	2
rs	9.6666
c	0
b	0
f	0

<?php
/**
 * Novactive Collection.
 *
 * @author    Luke Visinoni <[email protected], [email protected]>
 * @author    Sébastien Morel <[email protected], [email protected]>
 * @copyright 2017 Novactive
 * @license   MIT
 */

namespace Novactive\Collection;

use ArrayAccess;
use Countable;
use InvalidArgumentException;
use Iterator;
use JsonSerializable;
use RuntimeException;
use Traversable;

/**
 * Class Collection.
 */
class Collection implements ArrayAccess, Iterator, Countable, JsonSerializable
{
    /**
     * @var array
     */
    protected $items;

    /**
     * Collection constructor.
     *
     * @param array $items
     */
    public function __construct(array $items = [])
    {
        $this->items = $items;
        $this->rewind();
    }

    /**
     * @return array
     */
    public function toArray()
    {
        return $this->items;
    }

    /**
     * Set the value to the key no matter what.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return $this
     */
    public function set($key, $value)
    {
        $this->items[$key] = $value;

        return $this;
    }

    /**
     * Get the value related to the key.
     *
     * @param string $key
     * @param mixed  $default
     *
     * @return mixed|null
     */
    public function get($key, $default = null)
    {
        if ($this->containsKey($key)) {
            return $this->items[$key];
        }

        return $default;
    }

    /**
     * Get the item at the given index (numerically).
     *
     * @param int $index
     *
     * @return mixed|null
     */
    public function atIndex($index)
    {
        $i = 0;
        foreach ($this->items as $key => $value) {
            if ($i++ == $index) {
                return $value;
            }
        }

        return null;
    }

    /**
     * Get the key of a value if exists.
     *
     * @param mixed $value
     *
     * @return mixed|null
     */
    public function keyOf($value)
    {
        foreach ($this->items as $key => $iValue) {
            if ($value === $iValue) {
                return $key;
            }
        }

        return null;
    }

    /**
     * Get the index of a value if exists (numerically).
     *
     * @param mixed $value
     *
     * @return int|null
     */
    public function indexOf($value)
    {
        $i = 0;
        foreach ($this->items as $key => $iValue) {
            if ($value === $iValue) {
                return $i;
            }
            $i++;
        }

        return null;
    }

    /**
     * Test is the key exists.
     *
     * @param string $key
     *
     * @return bool
     */
    public function containsKey($key)
    {
        return isset($this->items[$key]) || array_key_exists($key, $this->items);
    }

    /**
     * Test if this values exists.
     *
     * @param mixed $value
     *
     * @performanceCompared true
     *
     * @return bool
     */
    public function contains($value)
    {
        return in_array($value, $this->items, true);
    }

    /**
     * Add a new value to the collection, next numeric index will be used.
     *
     * @param mixed $item
     *
     * @return $this
     */
    public function add($item)
    {
        $this->items[] = $item;

        return $this;
    }

    /**
     * Append the items at the end of the collection not regarding the keys.
     *
     * @param Traversable|array $values $items
     *
     * @return $this
     */
    public function append($values)
    {
        if (!is_array($values) && !($values instanceof Traversable)) {
            $this->doThrow('Invalid input type for append.', $values);
        }

        foreach ($values as $value) {
            $this->add($value);
        }

        return $this;
    }

    /**
     * Clear the collection of all its items.
     *
     * @return $this
     */
    public function clear()
    {
        $this->items = [];

        return $this;
    }

    /**
     * Remove the $key/value in the collection.
     *
     * @param string $key
     *
     * @return $this
     */
    public function remove($key)
    {
        unset($this->items[$key]);

        return $this;
    }

    /**
     *  Remove the $key/value in the collection and return the removed value.
     *
     * @param string $key
     *
     * @return mixed
     */
    public function pull($key)
    {
        if (!$this->containsKey($key)) {
            return null;
        }
        $removed = $this->items[$key];
        unset($this->items[$key]);

        return $removed;
    }

    /**
     * Get the first time and reset and rewind.
     *
     * @param callable|null $callback
     *
     * @return mixed
     */
    public function first(callable $callback = null)
    {
        if ($callback === null) {
            return reset($this->items);
        }

        return $this->filter($callback)->first();
    }

    /**
     * Shift an element off the beginning of the collection(in-place).
     *
     * @performanceCompared true
     */
    public function shift()
    {
        reset($this->items);

        return $this->pull($this->key());
    }

    /**
     * Shift an element off the end of the collection(in-place).
     *
     * @performanceCompared true
     */
    public function pop()
    {
        return array_pop($this->items);
    }

    /**
     * Get the last item.
     *
     * @param callable|null $callback
     *
     * @return mixed
     */
    public function last(callable $callback = null)
    {
        if ($callback === null) {
            return end($this->items);
        }

        return $this->filter($callback)->last();
    }

    /**
     * Map and return a new Collection.
     *
     * @param callable $callback
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function map(callable $callback)
    {
        $collection = Factory::create();
        $index      = 0;
        foreach ($this->items as $key => $value) {
            $collection->set($key, $callback($value, $key, $index++));
        }

        return $collection;
    }

    /**
     * Map (in-place).
     *
     * @param callable $callback
     *
     * @return $this
     */
    public function transform(callable $callback)
    {
        $index = 0;
        foreach ($this->items as $key => $value) {
            $this->set($key, $callback($value, $key, $index++));
        }

        return $this;
    }

    /**
     * Filter and return a new Collection.
     *
     * @param callable $callback
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function filter(callable $callback)
    {
        $collection = Factory::create();
        $index      = 0;
        foreach ($this->items as $key => $value) {
            if ($callback($value, $key, $index++)) {
                $collection->set($key, $value);
            }
        }

        return $collection;
    }

    /**
     * Filter (in-place).
     *
     * @param callable $callback
     *
     * @return $this
     */
    public function prune(callable $callback)
    {
        $index = 0;
        foreach ($this->items as $key => $value) {
            if (!$callback($value, $key, $index++)) {
                $this->remove($key);
            }
        }

        return $this;
    }

    /**
     * Combine and return a new Collection.
     * It takes the keys of the current Collection and assign the values.
     *
     * @param Traversable|array $values
     * @param bool              $inPlace
     *
     * @performanceCompared true
     *
     * @return mixed
     */
    public function combine($values, $inPlace = false)
    {
        if (!is_array($values) && !($values instanceof Traversable)) {
            $this->doThrow('Invalid input type for '.($inPlace ? 'replace' : 'combine').'.', $values);
        }

        if (count($values) != count($this->items)) {
            $this->doThrow(
                'Invalid input for '.($inPlace ? 'replace' : 'combine').', number of items does not match.',
                $values
            );
        }
        $values = Factory::getArrayForItems($values);

        return Factory::create(array_combine($this->items, $values));
    }

    /**
     * Combine (in-place).
     *
     * @param Traversable|array $values
     *
     * @return $this
     */
    public function replace($values)
    {
        $this->items = $this->combine($values, true)->toArray();

        return $this;
    }

    /**
     * Opposite of Combine
     * It keeps the values of the current Collection and assign new keys.
     *
     * @param Traversable|array $keys
     *
     * @return Collection
     */
    public function combineKeys($keys)
    {
        if (!is_array($keys) && !($keys instanceof Traversable)) {
            $this->doThrow('Invalid input type for combineKeys.', $keys);
        }

        if (count($keys) != count($this->items)) {
            $this->doThrow('Invalid input for combineKeys, number of items does not match.', $keys);
        }
        $collection = Factory::create();
        $this->rewind();
        foreach ($keys as $key) {
            $collection->set($key, $this->current());
            $this->next();
        }
        $this->rewind();

        return $collection;
    }

    /**
     * CombineKeys (in-place).
     *
     * @param Traversable|array $keys
     *
     * @return $this
     */
    public function reindex($keys)
    {
        $this->items = $this->combineKeys($keys)->toArray();

        return $this;
    }

    /**
     * Reduce.
     *
     * @param callable $callback
     * @param null     $initial
     *
     * @performanceCompared true
     *
     * @return mixed
     */
    public function reduce(callable $callback, $initial = null)
    {
        $accumulator = $initial;
        $index       = 0;
        foreach ($this->items as $key => $value) {
            $accumulator = $callback($accumulator, $value, $key, $index++);
        }

        return $accumulator;
    }

    /**
     * Run the callback on each element (passive).
     *
     * @param callable $callback
     *
     * @performanceCompared true
     *
     * @return $this
     */
    public function each(callable $callback)
    {
        $index = 0;
        foreach ($this->items as $key => $value) {
            $callback($value, $key, $index++);
        }

        return $this;
    }

    /**
     * Flip the keys and the values and return a new Collection.
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function flip()
    {
        $collection = Factory::create();
        foreach ($this->items as $key => $value) {
            $collection->set($value, $key);
        }

        return $collection;
    }

    /**
     * Flip (in-place).
     *
     * @return $this
     */
    public function invert()
    {
        $this->items = $this->flip()->toArray();

        return $this;
    }

    /**
     * Merge the items and the collections and return a new Collection.
     *
     * Note that is a real merge, numerical keys are merged too.(unlike array_merge)
     *
     * @param Traversable|array $items
     * @param bool              $inPlace
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function merge($items, $inPlace = false)
    {
        if (!is_array($items) && !($items instanceof Traversable)) {
            $this->doThrow('Invalid input type for '.($inPlace ? 'coalesce' : 'merge').'.', $items);
        }
        $collection = $inPlace ? $this : clone $this;
        foreach ($items as $key => $value) {
            $collection->set($key, $value);
        }

        return $collection;
    }

    /**
     * Merge (in-place).
     *
     * @param Traversable|array $items
     *
     * @return $this
     */
    public function coalesce($items)
    {
        return $this->merge($items, true);
    }

    /**
     * Union the collection with Items.
     *
     * @param Traversable|array $items
     * @param bool              $inPlace
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function union($items, $inPlace = false)
    {
        if (!is_array($items) && !($items instanceof Traversable)) {
            $this->doThrow('Invalid input type for '.($inPlace ? 'absorb' : 'union'), $items);
        }
        $collection = $inPlace ? $this : clone $this;
        foreach ($items as $key => $value) {
            if (!$collection->containsKey($key)) {
                $collection->set($key, $value);
            }
        }

        return $collection;
    }

    /**
     * Union (in-place).
     *
     * @param Traversable|array $items
     *
     * @return $this
     */
    public function absorb($items)
    {
        $this->union($items, true);

        return $this;
    }

    /**
     * Assert that the callback result is $expected for all.
     *
     * @param callable $callback
     * @param bool     $expected
     *
     * @return bool
     */
    public function assert(callable $callback, $expected)
    {
        $index = 0;
        foreach ($this->items as $key => $value) {
            if ($callback($value, $key, $index++) !== $expected) {
                return false;
            }
        }

        return true;
    }

    /**
     * Return all the values.
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function values()
    {
        return Factory::create(array_values($this->items));
    }

    /**
     * Return all the keys.
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function keys()
    {
        return Factory::create(array_keys($this->items));
    }

    /**
     * Pass the collection to the given callback and return the result.
     *
     * @param callable $callback
     *
     * @return mixed
     */
    public function pipe(callable $callback)
    {
        return $callback($this);
    }

    /**
     * Shuffle. (random in-place).
     *
     * @return $this
     */
    public function shuffle()
    {
        shuffle($this->items);

        return $this;
    }

    /**
     * Shuffle and return a new Collection.
     *
     * @return Collection
     */
    public function random()
    {
        $array = $this->items;
        shuffle($array);

        return Factory::create($array);
    }

    /**
     * Deduplicate the collection and return a new Collection.
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function unique()
    {
        return Factory::create(array_unique($this->items));
    }

    /**
     * @param string $separator
     *
     * @return string
     */
    public function implode($separator)
    {
        return implode($this->items, $separator);
    }

    /**
     * Unique (in-place).
     *
     * @return $this
     */
    public function distinct()
    {
        $this->items = array_unique($this->items);

        return $this;
    }

    /**
     * Merge the values items by items.
     *
     * @param Traversable|array $items
     *
     * @return Collection
     */
    public function zip($items)
    {
        $collection = Factory::create($items);

        return $this->map(
            function ($value, $key, $index) use ($collection) {
                return [$value, $collection->atIndex($index)];
            }
        );
    }

    /**
     * Reverse the collection and return a new Collection.
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function reverse()
    {
        return Factory::create(array_reverse($this->items, true));
    }

    /**
     * Reverse (in-place).
     *
     * @return $this
     */
    public function inverse()
    {
        $this->items = array_reverse($this->items);

        return $this;
    }

    /**
     * @return bool
     */
    public function isEmpty()
    {
        return $this->count() == 0;
    }

    /**
     * Split in the collection in $count parts.
     *
     * @param int $count
     *
     * @return Collection
     */
    public function split($count = 1)
    {
        return $this->chunk(ceil($this->count() / $count));
    }

    /**
     * Chunk of $size sub collection.
     *
     * @param int $size
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function chunk($size)
    {
        return Factory::create(array_chunk($this->items, $size, true));
    }

    /**
     * Get a slice of the collection and inject it in a new one.
     *
     * @param int      $offset
     * @param int|null $length
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function slice($offset, $length = null)
    {
        return Factory::create(array_slice($this->items, $offset, $length, true));
    }

    /**
     * Keep a slice of the collection (in-place).
     *
     * @param int      $offset
     * @param int|null $length
     *
     * @return $this
     */
    public function keep($offset, $length = null)
    {
        $this->items = $this->slice($offset, $length)->toArray();

        return $this;
    }

    /**
     * Cut a slice of the collection (in-place).
     *
     * @param int      $offset
     * @param int|null $length
     *
     * @return $this
     */
    public function cut($offset, $length = null)
    {
        if ($length === null) {
            $length = PHP_INT_MAX;
        }
        if ($offset < 0) {
            $offset = $this->count() + $offset;
        }

        return $this->prune(
            function ($value, $key, $index) use ($offset, $length) {
                return !(($index >= $offset) && ($index < $offset + $length));
            }
        );
    }

    /**
     * Compares the collection against $items and returns the values that are not present in the collection.
     *
     * @param Traversable|array $items
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function diff($items)
    {
        $items = Factory::getArrayForItems($items);

        return Factory::create(array_diff($this->items, $items));
    }

    /**
     * Compares the collection against $items and returns the keys that are not present in the collection.
     *
     * @param Traversable|array $items
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function diffKeys($items)
    {
        $items = Factory::getArrayForItems($items);

        return Factory::create(array_diff_key($this->items, $items));
    }

    /**
     * Compares the collection against $items and returns the values that exist in the collection.
     *
     * @param Traversable|array $items
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function intersect($items)
    {
        $items = Factory::getArrayForItems($items);

        return Factory::create(array_intersect($this->items, $items));
    }

    /**
     * Compares the collection against $items and returns the keys that exist in the collection.
     *
     * @param Traversable|array $items
     *
     * @performanceCompared true
     *
     * @return Collection
     */
    public function intersectKeys($items)
    {
        $items = Factory::getArrayForItems($items);

        return Factory::create(array_intersect_key($this->items, $items));
    }

    /**
     * Return true if one item return true to the callback.
     *
     * @param callable $callback
     *
     * @return bool
     */
    public function exists(callable $callback)
    {
        $index = 0;
        foreach ($this->items as $key => $item) {
            if ($callback($item, $key, $index++) === true) {
                return true;
            }
        }

        return false;
    }

    /* --         ---          -- */
    /* -- INTERFACE COMPLIANCE -- */
    /* --         ---          -- */

    /* --                      -- */
    /* --    JsonSerializable  -- */
    /* --                      -- */

    /**
     * @return array
     */
    public function jsonSerialize()
    {
        return $this->toArray();
    }

    /* --                      -- */
    /* -- Array Access Methods -- */
    /* --                      -- */

    /**
     * {@inheritDoc}
     */
    public function offsetExists($offset)
    {
        return $this->containsKey($offset);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetGet($offset)
    {
        if (!$this->containsKey($offset)) {
            throw new RuntimeException("Unknown offset: {$offset}");
        }

        return $this->get($offset);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetUnset($offset)
    {
        $this->remove($offset);
    }

    /**
     * {@inheritDoc}
     */
    public function offsetSet($offset, $value)
    {
        if (!isset($offset)) {
            $this->add($value);
        }

        $this->set($offset, $value);
    }

    /* --                     -- */
    /* --  Iterator Methods   -- */
    /* --                     -- */

    /**
     * {@inheritDoc}
     */
    public function current()
    {
        return current($this->items);
    }

    /**
     * {@inheritDoc}
     */
    public function key()
    {
        return key($this->items);
    }

    /**
     * {@inheritDoc}
     */
    public function next()
    {
        return next($this->items);
    }

    /**
     * {@inheritDoc}
     */
    public function rewind()
    {
        reset($this->items);
    }

    /**
     * {@inheritDoc}
     */
    public function valid()
    {
        return $this->containsKey(key($this->items));
    }

    /* --                             -- */
    /* --  Countable Method           -- */
    /* --                             -- */

    /**
     * {@inheritDoc}
     */
    public function count()
    {
        return count($this->items);
    }

    /* --         ---          -- */
    /* --        OTHERS        -- */
    /* --         ---          -- */

    /**
     * @param string $message
     * @param mixed  $arguments
     *
     * @throws InvalidArgumentException
     */
    protected function doThrow($message, $arguments)
    {
        unset($arguments);
        throw new InvalidArgumentException($message);
    }

    /**
     * @return $this
     */
    public function dump()
    {
        return $this;
    }
}


1		<?php
2		/**
3		* Novactive Collection.
4		*
5		* @author Luke Visinoni <[email protected], [email protected]>
6		* @author Sébastien Morel <[email protected], [email protected]>
7		* @copyright 2017 Novactive
8		* @license MIT
9		*/
10
11		namespace Novactive\Collection;
12
13		use ArrayAccess;
14		use Countable;
15		use InvalidArgumentException;
16		use Iterator;
17		use JsonSerializable;
18		use RuntimeException;
19		use Traversable;
20
21		/**
22		* Class Collection.
23		*/
24		class Collection implements ArrayAccess, Iterator, Countable, JsonSerializable
25		{
26		/**
27		* @var array
28		*/
29		protected $items;
30
31		/**
32		* Collection constructor.
33		*
34		* @param array $items
35		*/
36	123	public function __construct(array $items = [])
37		{
38	123	$this->items = $items;
39	123	$this->rewind();
40	123	}
41
42		/**
43		* @return array
44		*/
45	29	public function toArray()
46		{
47	29	return $this->items;
48		}
49
50		/**
51		* Set the value to the key no matter what.
52		*
53		* @param string $key
54		* @param mixed $value
55		*
56		* @return $this
57		*/
58	23	public function set($key, $value)
59		{
60	23	$this->items[$key] = $value;
61
62	23	return $this;
63		}
64
65		/**
66		* Get the value related to the key.
67		*
68		* @param string $key
69		* @param mixed $default
70		*
71		* @return mixed\|null
72		*/
73	3	public function get($key, $default = null)
74		{
75	3	if ($this->containsKey($key)) {
76	3	return $this->items[$key];
77		}
78
79	1	return $default;
80		}
81
82		/**
83		* Get the item at the given index (numerically).
84		*
85		* @param int $index
86		*
87		* @return mixed\|null
88		*/
89	11	public function atIndex($index)
90		{
91	11	$i = 0;
92	11	foreach ($this->items as $key => $value) {
93	11	if ($i++ == $index) {
94	10	return $value;
95		}
96	7	}
97
98	1	return null;
99		}
100
101		/**
102		* Get the key of a value if exists.
103		*
104		* @param mixed $value
105		*
106		* @return mixed\|null
107		*/
108	10	public function keyOf($value)
109		{
110	10	foreach ($this->items as $key => $iValue) {
111	10	if ($value === $iValue) {
112	8	return $key;
113		}
114	9	}
115
116	2	return null;
117		}
118
119		/**
120		* Get the index of a value if exists (numerically).
121		*
122		* @param mixed $value
123		*
124		* @return int\|null
125		*/
126	6	public function indexOf($value)
127		{
128	6	$i = 0;
129	6	foreach ($this->items as $key => $iValue) {
130	6	if ($value === $iValue) {
131	4	return $i;
132		}
133	5	$i++;
134	5	}
135
136	2	return null;
137		}
138
139		/**
140		* Test is the key exists.
141		*
142		* @param string $key
143		*
144		* @return bool
145		*/
146	19	public function containsKey($key)
147		{
148	19	return isset($this->items[$key]) \|\| array_key_exists($key, $this->items);
149		}
150
151		/**
152		* Test if this values exists.
153		*
154		* @param mixed $value
155		*
156		* @performanceCompared true
157		*
158		* @return bool
159		*/
160	1	public function contains($value)
161		{
162	1	return in_array($value, $this->items, true);
163		}
164
165		/**
166		* Add a new value to the collection, next numeric index will be used.
167		*
168		* @param mixed $item
169		*
170		* @return $this
171		*/
172	6	public function add($item)
173		{
174	6	$this->items[] = $item;
175
176	6	return $this;
177		}
178
179		/**
180		* Append the items at the end of the collection not regarding the keys.
181		*
182		* @param Traversable\|array $values $items
183		*
184		* @return $this
185		*/
186	4	public function append($values)
187		{
188	4	if (!is_array($values) && !($values instanceof Traversable)) {
189	1	$this->doThrow('Invalid input type for append.', $values);
190		}
191
192	3	foreach ($values as $value) {
193	3	$this->add($value);
194	3	}
195
196	3	return $this;
197		}
198
199		/**
200		* Clear the collection of all its items.
201		*
202		* @return $this
203		*/
204	1	public function clear()
205		{
206	1	$this->items = [];
207
208	1	return $this;
209		}
210
211		/**
212		* Remove the $key/value in the collection.
213		*
214		* @param string $key
215		*
216		* @return $this
217		*/
218	8	public function remove($key)
219		{
220	8	unset($this->items[$key]);
221
222	8	return $this;
223		}
224
225		/**
226		* Remove the $key/value in the collection and return the removed value.
227		*
228		* @param string $key
229		*
230		* @return mixed
231		*/
232	2	public function pull($key)
233		{
234	2	if (!$this->containsKey($key)) {
235	1	return null;
236		}
237	2	$removed = $this->items[$key];
238	2	unset($this->items[$key]);
239
240	2	return $removed;
241		}
242
243		/**
244		* Get the first time and reset and rewind.
245		*
246		* @param callable\|null $callback
247		*
248		* @return mixed
249		*/
250	4	public function first(callable $callback = null)
251		{
252	4	if ($callback === null) {
253	4	return reset($this->items);
254		}
255
256	2	return $this->filter($callback)->first();
257		}
258
259		/**
260		* Shift an element off the beginning of the collection(in-place).
261		*
262		* @performanceCompared true
263		*/
264	1	public function shift()
265		{
266	1	reset($this->items);
267
268	1	return $this->pull($this->key());
269		}
270
271		/**
272		* Shift an element off the end of the collection(in-place).
273		*
274		* @performanceCompared true
275		*/
276	1	public function pop()
277		{
278	1	return array_pop($this->items);
279		}
280
281		/**
282		* Get the last item.
283		*
284		* @param callable\|null $callback
285		*
286		* @return mixed
287		*/
288	4	public function last(callable $callback = null)
289		{
290	4	if ($callback === null) {
291	4	return end($this->items);
292		}
293
294	2	return $this->filter($callback)->last();
295		}
296
297		/**
298		* Map and return a new Collection.
299		*
300		* @param callable $callback
301		*
302		* @performanceCompared true
303		*
304		* @return Collection
305		*/
306	3	public function map(callable $callback)
307		{
308	3	$collection = Factory::create();
309	3	$index = 0;
310	3	foreach ($this->items as $key => $value) {
311	3	$collection->set($key, $callback($value, $key, $index++));
312	3	}
313
314	3	return $collection;
315		}
316
317		/**
318		* Map (in-place).
319		*
320		* @param callable $callback
321		*
322		* @return $this
323		*/
324	2	public function transform(callable $callback)
325		{
326	2	$index = 0;
327	2	foreach ($this->items as $key => $value) {
328	2	$this->set($key, $callback($value, $key, $index++));
329	2	}
330
331	2	return $this;
332		}
333
334		/**
335		* Filter and return a new Collection.
336		*
337		* @param callable $callback
338		*
339		* @performanceCompared true
340		*
341		* @return Collection
342		*/
343	5	public function filter(callable $callback)
344		{
345	5	$collection = Factory::create();
346	5	$index = 0;
347	5	foreach ($this->items as $key => $value) {
348	5	if ($callback($value, $key, $index++)) {
349	5	$collection->set($key, $value);
350	5	}
351	5	}
352
353	5	return $collection;
354		}
355
356		/**
357		* Filter (in-place).
358		*
359		* @param callable $callback
360		*
361		* @return $this
362		*/
363	4	public function prune(callable $callback)
364		{
365	4	$index = 0;
366	4	foreach ($this->items as $key => $value) {
367	4	if (!$callback($value, $key, $index++)) {
368	4	$this->remove($key);
369	4	}
370	4	}
371
372	4	return $this;
373		}
374
375		/**
376		* Combine and return a new Collection.
377		* It takes the keys of the current Collection and assign the values.
378		*
379		* @param Traversable\|array $values
380		* @param bool $inPlace
381		*
382		* @performanceCompared true
383		*
384		* @return mixed
385		*/
386	7	public function combine($values, $inPlace = false)
387		{
388	7	if (!is_array($values) && !($values instanceof Traversable)) {
389	2	$this->doThrow('Invalid input type for '.($inPlace ? 'replace' : 'combine').'.', $values);
390		}
391
392	5	if (count($values) != count($this->items)) {
393	2	$this->doThrow(
394	2	'Invalid input for '.($inPlace ? 'replace' : 'combine').', number of items does not match.',
395		$values
396	2	);
397		}
398	3	$values = Factory::getArrayForItems($values);
399
400	3	return Factory::create(array_combine($this->items, $values));
401		}
402
403		/**
404		* Combine (in-place).
405		*
406		* @param Traversable\|array $values
407		*
408		* @return $this
409		*/
410	3	public function replace($values)
411		{
412	3	$this->items = $this->combine($values, true)->toArray();
413
414	1	return $this;
415		}
416
417		/**
418		* Opposite of Combine
419		* It keeps the values of the current Collection and assign new keys.
420		*
421		* @param Traversable\|array $keys
422		*
423		* @return Collection
424		*/
425	5	public function combineKeys($keys)
426		{
427	5	if (!is_array($keys) && !($keys instanceof Traversable)) {
428	1	$this->doThrow('Invalid input type for combineKeys.', $keys);
429		}
430
431	4	if (count($keys) != count($this->items)) {
432	1	$this->doThrow('Invalid input for combineKeys, number of items does not match.', $keys);
433		}
434	3	$collection = Factory::create();
435	3	$this->rewind();
436	3	foreach ($keys as $key) {
437	3	$collection->set($key, $this->current());
438	3	$this->next();
439	3	}
440	3	$this->rewind();
441
442	3	return $collection;
443		}
444
445		/**
446		* CombineKeys (in-place).
447		*
448		* @param Traversable\|array $keys
449		*
450		* @return $this
451		*/
452	1	public function reindex($keys)
453		{
454	1	$this->items = $this->combineKeys($keys)->toArray();
455
456	1	return $this;
457		}
458
459		/**
460		* Reduce.
461		*
462		* @param callable $callback
463		* @param null $initial
464		*
465		* @performanceCompared true
466		*
467		* @return mixed
468		*/
469	2	public function reduce(callable $callback, $initial = null)
470		{
471	2	$accumulator = $initial;
472	2	$index = 0;
473	2	foreach ($this->items as $key => $value) {
474	2	$accumulator = $callback($accumulator, $value, $key, $index++);
475	2	}
476
477	2	return $accumulator;
478		}
479
480		/**
481		* Run the callback on each element (passive).
482		*
483		* @param callable $callback
484		*
485		* @performanceCompared true
486		*
487		* @return $this
488		*/
489	1	public function each(callable $callback)
490		{
491	1	$index = 0;
492	1	foreach ($this->items as $key => $value) {
493	1	$callback($value, $key, $index++);
494	1	}
495
496	1	return $this;
497		}
498
499		/**
500		* Flip the keys and the values and return a new Collection.
501		*
502		* @performanceCompared true
503		*
504		* @return Collection
505		*/
506	3	public function flip()
507		{
508	3	$collection = Factory::create();
509	3	foreach ($this->items as $key => $value) {
510	3	$collection->set($value, $key);
511	3	}
512
513	3	return $collection;
514		}
515
516		/**
517		* Flip (in-place).
518		*
519		* @return $this
520		*/
521	2	public function invert()
522		{
523	2	$this->items = $this->flip()->toArray();
524
525	2	return $this;
526		}
527
528		/**
529		* Merge the items and the collections and return a new Collection.
530		*
531		* Note that is a real merge, numerical keys are merged too.(unlike array_merge)
532		*
533		* @param Traversable\|array $items
534		* @param bool $inPlace
535		*
536		* @performanceCompared true
537		*
538		* @return Collection
539		*/
540	8	public function merge($items, $inPlace = false)
541		{
542	8	if (!is_array($items) && !($items instanceof Traversable)) {
543	6	$this->doThrow('Invalid input type for '.($inPlace ? 'coalesce' : 'merge').'.', $items);
544		}
545	2	$collection = $inPlace ? $this : clone $this;
546	2	foreach ($items as $key => $value) {
547	2	$collection->set($key, $value);
548	2	}
549
550	2	return $collection;
551		}
552
553		/**
554		* Merge (in-place).
555		*
556		* @param Traversable\|array $items
557		*
558		* @return $this
559		*/
560	4	public function coalesce($items)
561		{
562	4	return $this->merge($items, true);
563		}
564
565		/**
566		* Union the collection with Items.
567		*
568		* @param Traversable\|array $items
569		* @param bool $inPlace
570		*
571		* @performanceCompared true
572		*
573		* @return Collection
574		*/
575	8	public function union($items, $inPlace = false)
576		{
577	8	if (!is_array($items) && !($items instanceof Traversable)) {
578	6	$this->doThrow('Invalid input type for '.($inPlace ? 'absorb' : 'union'), $items);
579		}
580	2	$collection = $inPlace ? $this : clone $this;
581	2	foreach ($items as $key => $value) {
582	2	if (!$collection->containsKey($key)) {
583	2	$collection->set($key, $value);
584	2	}
585	2	}
586
587	2	return $collection;
588		}
589
590		/**
591		* Union (in-place).
592		*
593		* @param Traversable\|array $items
594		*
595		* @return $this
596		*/
597	4	public function absorb($items)
598		{
599	4	$this->union($items, true);
600
601	1	return $this;
602		}
603
604		/**
605		* Assert that the callback result is $expected for all.
606		*
607		* @param callable $callback
608		* @param bool $expected
609		*
610		* @return bool
611		*/
612	1	public function assert(callable $callback, $expected)
613		{
614	1	$index = 0;
615	1	foreach ($this->items as $key => $value) {
616	1	if ($callback($value, $key, $index++) !== $expected) {
617	1	return false;
618		}
619	1	}
620
621	1	return true;
622		}
623
624		/**
625		* Return all the values.
626		*
627		* @performanceCompared true
628		*
629		* @return Collection
630		*/
631	9	public function values()
632		{
633	9	return Factory::create(array_values($this->items));
634		}
635
636		/**
637		* Return all the keys.
638		*
639		* @performanceCompared true
640		*
641		* @return Collection
642		*/
643	2	public function keys()
644		{
645	2	return Factory::create(array_keys($this->items));
646		}
647
648		/**
649		* Pass the collection to the given callback and return the result.
650		*
651		* @param callable $callback
652		*
653		* @return mixed
654		*/
655	2	public function pipe(callable $callback)
656		{
657	2	return $callback($this);
658		}
659
660		/**
661		* Shuffle. (random in-place).
662		*
663		* @return $this
664		*/
665	1	public function shuffle()
666		{
667	1	shuffle($this->items);
668
669	1	return $this;
670		}
671
672		/**
673		* Shuffle and return a new Collection.
674		*
675		* @return Collection
676		*/
677	1	public function random()
678		{
679	1	$array = $this->items;
680	1	shuffle($array);
681
682	1	return Factory::create($array);
683		}
684
685		/**
686		* Deduplicate the collection and return a new Collection.
687		*
688		* @performanceCompared true
689		*
690		* @return Collection
691		*/
692	1	public function unique()
693		{
694	1	return Factory::create(array_unique($this->items));
695		}
696
697		/**
698		* @param string $separator
699		*
700		* @return string
701		*/
702	1	public function implode($separator)
703		{
704	1	return implode($this->items, $separator);
705		}
706
707		/**
708		* Unique (in-place).
709		*
710		* @return $this
711		*/
712	1	public function distinct()
713		{
714	1	$this->items = array_unique($this->items);
715
716	1	return $this;
717		}
718
719		/**
720		* Merge the values items by items.
721		*
722		* @param Traversable\|array $items
723		*
724		* @return Collection
725		*/
726	2	public function zip($items)
727		{
728	2	$collection = Factory::create($items);
729
730	2	return $this->map(
731		function ($value, $key, $index) use ($collection) {
732	2	return [$value, $collection->atIndex($index)];
733		}
734	2	);
735		}
736
737		/**
738		* Reverse the collection and return a new Collection.
739		*
740		* @performanceCompared true
741		*
742		* @return Collection
743		*/
744	1	public function reverse()
745		{
746	1	return Factory::create(array_reverse($this->items, true));
747		}
748
749		/**
750		* Reverse (in-place).
751		*
752		* @return $this
753		*/
754	1	public function inverse()
755		{
756	1	$this->items = array_reverse($this->items);
757
758	1	return $this;
759		}
760
761		/**
762		* @return bool
763		*/
764	1	public function isEmpty()
765		{
766	1	return $this->count() == 0;
767		}
768
769		/**
770		* Split in the collection in $count parts.
771		*
772		* @param int $count
773		*
774		* @return Collection
775		*/
776	1	public function split($count = 1)
777		{
778	1	return $this->chunk(ceil($this->count() / $count));
779		}
780
781		/**
782		* Chunk of $size sub collection.
783		*
784		* @param int $size
785		*
786		* @performanceCompared true
787		*
788		* @return Collection
789		*/
790	2	public function chunk($size)
791		{
792	2	return Factory::create(array_chunk($this->items, $size, true));
793		}
794
795		/**
796		* Get a slice of the collection and inject it in a new one.
797		*
798		* @param int $offset
799		* @param int\|null $length
800		*
801		* @performanceCompared true
802		*
803		* @return Collection
804		*/
805	7	public function slice($offset, $length = null)
806		{
807	7	return Factory::create(array_slice($this->items, $offset, $length, true));
808		}
809
810		/**
811		* Keep a slice of the collection (in-place).
812		*
813		* @param int $offset
814		* @param int\|null $length
815		*
816		* @return $this
817		*/
818	6	public function keep($offset, $length = null)
819		{
820	6	$this->items = $this->slice($offset, $length)->toArray();
821
822	6	return $this;
823		}
824
825		/**
826		* Cut a slice of the collection (in-place).
827		*
828		* @param int $offset
829		* @param int\|null $length
830		*
831		* @return $this
832		*/
833	3	public function cut($offset, $length = null)
834		{
835	3	if ($length === null) {
836	1	$length = PHP_INT_MAX;
837	1	}
838	3	if ($offset < 0) {
839	1	$offset = $this->count() + $offset;
840	1	}
841
842	3	return $this->prune(
843	3	function ($value, $key, $index) use ($offset, $length) {
844	3	return !(($index >= $offset) && ($index < $offset + $length));
845		}
846	3	);
847		}
848
849		/**
850		* Compares the collection against $items and returns the values that are not present in the collection.
851		*
852		* @param Traversable\|array $items
853		*
854		* @performanceCompared true
855		*
856		* @return Collection
857		*/
858	1	public function diff($items)
859		{
860	1	$items = Factory::getArrayForItems($items);
861
862	1	return Factory::create(array_diff($this->items, $items));
863		}
864
865		/**
866		* Compares the collection against $items and returns the keys that are not present in the collection.
867		*
868		* @param Traversable\|array $items
869		*
870		* @performanceCompared true
871		*
872		* @return Collection
873		*/
874	1	public function diffKeys($items)
875		{
876	1	$items = Factory::getArrayForItems($items);
877
878	1	return Factory::create(array_diff_key($this->items, $items));
879		}
880
881		/**
882		* Compares the collection against $items and returns the values that exist in the collection.
883		*
884		* @param Traversable\|array $items
885		*
886		* @performanceCompared true
887		*
888		* @return Collection
889		*/
890	1	public function intersect($items)
891		{
892	1	$items = Factory::getArrayForItems($items);
893
894	1	return Factory::create(array_intersect($this->items, $items));
895		}
896
897		/**
898		* Compares the collection against $items and returns the keys that exist in the collection.
899		*
900		* @param Traversable\|array $items
901		*
902		* @performanceCompared true
903		*
904		* @return Collection
905		*/
906	1	public function intersectKeys($items)
907		{
908	1	$items = Factory::getArrayForItems($items);
909
910	1	return Factory::create(array_intersect_key($this->items, $items));
911		}
912
913		/**
914		* Return true if one item return true to the callback.
915		*
916		* @param callable $callback
917		*
918		* @return bool
919		*/
920	1	public function exists(callable $callback)
921		{
922	1	$index = 0;
923	1	foreach ($this->items as $key => $item) {
924	1	if ($callback($item, $key, $index++) === true) {
925	1	return true;
926		}
927	1	}
928
929	1	return false;
930		}
931
932		/* -- --- -- */
933		/* -- INTERFACE COMPLIANCE -- */
934		/* -- --- -- */
935
936		/* -- -- */
937		/* -- JsonSerializable -- */
938		/* -- -- */
939
940		/**
941		* @return array
942		*/
943	2	public function jsonSerialize()
944		{
945	2	return $this->toArray();
946		}
947
948		/* -- -- */
949		/* -- Array Access Methods -- */
950		/* -- -- */
951
952		/**
953		* {@inheritDoc}
954		*/
955	1	public function offsetExists($offset)
956		{
957	1	return $this->containsKey($offset);
958		}
959
960		/**
961		* {@inheritDoc}
962		*/
963	2	public function offsetGet($offset)
964		{
965	2	if (!$this->containsKey($offset)) {
966	1	throw new RuntimeException("Unknown offset: {$offset}");
967		}
968
969	1	return $this->get($offset);
970		}
971
972		/**
973		* {@inheritDoc}
974		*/
975	1	public function offsetUnset($offset)
976		{
977	1	$this->remove($offset);
978	1	}
979
980		/**
981		* {@inheritDoc}
982		*/
983	2	public function offsetSet($offset, $value)
984		{
985	2	if (!isset($offset)) {
986	1	$this->add($value);
987	1	}
988
989	2	$this->set($offset, $value);
990	2	}
991
992		/* -- -- */
993		/* -- Iterator Methods -- */
994		/* -- -- */
995
996		/**
997		* {@inheritDoc}
998		*/
999	13	public function current()
1000		{
1001	13	return current($this->items);
1002		}
1003
1004		/**
1005		* {@inheritDoc}
1006		*/
1007	6	public function key()
1008		{
1009	6	return key($this->items);
1010		}
1011
1012		/**
1013		* {@inheritDoc}
1014		*/
1015	13	public function next()
1016		{
1017	13	return next($this->items);
1018		}
1019
1020		/**
1021		* {@inheritDoc}
1022		*/
1023	123	public function rewind()
1024		{
1025	123	reset($this->items);
1026	123	}
1027
1028		/**
1029		* {@inheritDoc}
1030		*/
1031	8	public function valid()
1032		{
1033	8	return $this->containsKey(key($this->items));
1034		}
1035
1036		/* -- -- */
1037		/* -- Countable Method -- */
1038		/* -- -- */
1039
1040		/**
1041		* {@inheritDoc}
1042		*/
1043	17	public function count()
1044		{
1045	17	return count($this->items);
1046		}
1047
1048		/* -- --- -- */
1049		/* -- OTHERS -- */
1050		/* -- --- -- */
1051
1052		/**
1053		* @param string $message
1054		* @param mixed $arguments
1055		*
1056		* @throws InvalidArgumentException
1057		*/
1058	19	protected function doThrow($message, $arguments)
1059		{
1060	19	unset($arguments);
1061	19	throw new InvalidArgumentException($message);
1062		}
1063
1064		/**
1065		* @return $this
1066		*/
1067	2	public function dump()
1068		{
1069	2	return $this;
1070		}
1071		}
1072

Novactive / NovaCollection

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Collection::flip() A

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