Sequence::intersect() - Code Metrics - Inspection of "Merge branch 'master' of github.com:php-ds/polyfil..." - php-ds/polyfill - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e0916e...38b230 )

by Rudi

created 2016-07-31 18:35 UTC

Sequence::intersect() A

↳ Parent: Sequence

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	6
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	1

<?php
namespace Ds\Traits;

use Error;
use OutOfRangeException;
use Traversable;
use UnderflowException;

/**
 * Sequence
 *
 * @package Ds\Traits
 */
trait Sequence
{
    /**
     * @var array
     */
    private $internal = [];

    /**
     * @inheritDoc
     */
    public function __construct($values = null)
    {
        if (func_num_args()) {
            $this->push(...$values);
        }
    }

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

    /**
     * @inheritdoc
     */
    public function apply(callable $callback)
    {
        foreach ($this->internal as &$value) {
            $value = $callback($value);
        }
    }

    /**
     * @inheritdoc
     */
    public function merge($values): \Ds\Sequence
    {
        if ( ! is_array($values)) {
            $values = iterator_to_array($values);
        }

        return new self(array_merge($this->internal, $values));
    }

    /**
     * @inheritdoc
     */
    public function count(): int
    {
        return count($this->internal);
    }

    /**
     * @inheritDoc
     */
    public function contains(...$values): bool
    {
        foreach ($values as $value) {
            if ($this->find($value) === false) {
                return false;
            }
        }

        return true;
    }

    /**
     * @inheritDoc
     */
    public function filter(callable $callback = null): \Ds\Sequence
    {
        return new self(array_filter($this->internal, $callback ?: 'boolval'));
    }

    /**
     * @inheritDoc
     */
    public function find($value)
    {
        return array_search($value, $this->internal, true);
    }

    /**
     * @inheritDoc
     */
    public function first()
    {
        if (empty($this->internal)) {
            throw new UnderflowException();
        }

        return $this->internal[0];
    }

    /**
     * @inheritDoc
     */
    public function get(int $index)
    {
        $this->checkRange($index);

        return $this->internal[$index];
    }

    /**
     * @inheritDoc
     */
    public function insert(int $index, ...$values)
    {
        if ($index < 0 || $index > count($this->internal)) {
            throw new OutOfRangeException();
        }

        array_splice($this->internal, $index, 0, $values);
    }

    /**
     * @inheritDoc
     */
    public function join(string $glue = null): string
    {
        return implode($glue, $this->internal);
    }

    /**
     * @inheritDoc
     */
    public function last()
    {
        if ($this->isEmpty()) {
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
            throw new UnderflowException();
        }

        return end($this->internal);
    }

    /**
     * @inheritDoc
     */
    public function map(callable $callback): \Ds\Sequence
    {
        return new self(array_map($callback, $this->internal));
    }

    /**
     * @inheritDoc
     */
    public function pop()

    {
        if ($this->isEmpty()) {
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
            throw new UnderflowException();
        }

        $value = array_pop($this->internal);
        $this->adjustCapacity();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

        return $value;
    }

    /**
     * @inheritDoc
     */
    public function push(...$values)
    {
        if ($values) {

            array_push($this->internal, ...$values);
            $this->adjustCapacity();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
        }
    }

    /**
     * @inheritDoc
     */
    public function reduce(callable $callback, $initial = null)
    {
        return array_reduce($this->internal, $callback, $initial);
    }

    /**
     * @inheritDoc
     */
    public function remove(int $index)
    {
        $this->checkRange($index);

        $value = array_splice($this->internal, $index, 1, null)[0];
        $this->adjustCapacity();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

        return $value;
    }

    /**
     * @inheritDoc
     */
    public function reverse()
    {
        $this->internal = array_reverse($this->internal);
    }

    /**
     * @inheritDoc
     */
    public function reversed(): \Ds\Sequence
    {
        return new self(array_reverse($this->internal));
    }

    private function normalizeRotations(int $rotations, int $count)
    {
        if ($rotations < 0) {
            return $count - (abs($rotations) % $count);
        }

        return $rotations % $count;
    }

    /**
     * @inheritDoc
     */
    public function rotate(int $rotations)
    {
        if (count($this) < 2) {
            return;
        }

        $rotations = $this->normalizeRotations($rotations, count($this));

        while ($rotations--) {
            $this->push($this->shift());
        }
    }

    /**
     * @inheritDoc
     */
    public function set(int $index, $value)
    {
        $this->checkRange($index);
        $this->internal[$index] = $value;
    }

    /**
     * @inheritDoc
     */
    public function shift()

    {
        if ($this->isEmpty()) {
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
            throw new UnderflowException();
        }

        $value = array_shift($this->internal);
        $this->adjustCapacity();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}

        return $value;
    }

    /**
     * @inheritDoc
     */
    public function slice(int $offset, int $length = null): \Ds\Sequence
    {
        if (func_num_args() === 1) {
            $length = count($this);
        }

        return new self(array_slice($this->internal, $offset, $length));
    }

    /**
     * @inheritDoc
     */
    public function sort(callable $comparator = null)
    {
        if ($comparator) {
            usort($this->internal, $comparator);
        } else {
            sort($this->internal);
        }
    }

    /**
     * @inheritDoc
     */
    public function sorted(callable $comparator = null): \Ds\Sequence
    {
        $internal = $this->internal;

        if ($comparator) {
            usort($internal, $comparator);
        } else {
            sort($internal);
        }

        return new self($internal);
    }

    /**
     * @inheritDoc
     */
    public function sum()
    {
        return array_sum($this->internal);
    }

    /**
     * @inheritDoc
     */
    public function unshift(...$values)
    {
        if ($values) {

            array_unshift($this->internal, ...$values);
            $this->adjustCapacity();
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
        }
    }

    /**
     *
     */
    public function intersect(\Ds\Sequence $sequence): \Ds\Sequence
    {
        return $this->filter(function($value) use ($sequence) {
            return $sequence->contains($value);
        });
    }

    /**
     *
     */
    public function diff(\Ds\Sequence $sequence): \Ds\Sequence
    {
        return $this->filter(function($value) use ($sequence) {
            return ! $sequence->contains($value);
        });
    }

    /**
     *
     */
    public function union(\Ds\Sequence $sequence): \Ds\Sequence
    {
        return $this->merge($sequence);
    }

    /**
     *
     */
    public function xor(\Ds\Sequence $sequence): \Ds\Sequence
    {
        return $this->union($sequence)->filter(function($value) {
            return $this->contains($value) ^ $sequence->contains($value);

        });
    }

    /**
     *
     *
     * @param int $index
     */
    private function checkRange(int $index)
    {
        if ($index < 0 || $index >= count($this->internal)) {
            throw new OutOfRangeException();
        }
    }

    /**
     *
     */
    public function getIterator()
    {
        foreach ($this->internal as $value) {
            yield $value;
        }
    }

    /**
     * @inheritdoc
     */
    public function clear()
    {
        $this->internal = [];
        $this->capacity = self::MIN_CAPACITY;
class MyClass { }

$x = new MyClass();
$x->foo = true;
    }

    /**
     * @inheritdoc
     */
    public function offsetSet($offset, $value)
    {
        if ($offset === null) {
            $this->push($value);
        } else {
            $this->set($offset, $value);
        }
    }

    /**
     * @inheritdoc
     */
    public function &offsetGet($offset)
    {
        $this->checkRange($offset);
        return $this->internal[$offset];
    }

    /**
     * @inheritdoc
     */
    public function offsetUnset($offset)
    {
        // Unset should be quiet, so we shouldn't allow 'remove' to throw.
        if (is_integer($offset) && $offset >= 0 && $offset < count($this)) {
            $this->remove($offset);
        }
    }

    /**
     * @inheritdoc
     */
    public function offsetExists($offset)
    {
        if ($offset < 0 || $offset >= count($this)) {
            return false;
        }

        return $this->get($offset) !== null;
    }
}


1		<?php
2		namespace Ds\Traits;
3
4		use Error;
5		use OutOfRangeException;
6		use Traversable;
7		use UnderflowException;
8
9		/**
10		* Sequence
11		*
12		* @package Ds\Traits
13		*/
14		trait Sequence
15		{
16		/**
17		* @var array
18		*/
19		private $internal = [];
20
21		/**
22		* @inheritDoc
23		*/
24		public function __construct($values = null)
25		{
26		if (func_num_args()) {
27		$this->push(...$values);
28		}
29		}
30
31		/**
32		* @inheritdoc
33		*/
34		public function toArray(): array
35		{
36		return $this->internal;
37		}
38
39		/**
40		* @inheritdoc
41		*/
42		public function apply(callable $callback)
43		{
44		foreach ($this->internal as &$value) {
45		$value = $callback($value);
46		}
47		}
48
49		/**
50		* @inheritdoc
51		*/
52		public function merge($values): \Ds\Sequence
53		{
54		if ( ! is_array($values)) {
55		$values = iterator_to_array($values);
56		}
57
58		return new self(array_merge($this->internal, $values));
59		}
60
61		/**
62		* @inheritdoc
63		*/
64		public function count(): int
65		{
66		return count($this->internal);
67		}
68
69		/**
70		* @inheritDoc
71		*/
72		public function contains(...$values): bool
73		{
74		foreach ($values as $value) {
75		if ($this->find($value) === false) {
76		return false;
77		}
78		}
79
80		return true;
81		}
82
83		/**
84		* @inheritDoc
85		*/
86		public function filter(callable $callback = null): \Ds\Sequence
87		{
88		return new self(array_filter($this->internal, $callback ?: 'boolval'));
89		}
90
91		/**
92		* @inheritDoc
93		*/
94		public function find($value)
95		{
96		return array_search($value, $this->internal, true);
97		}
98
99		/**
100		* @inheritDoc
101		*/
102		public function first()
103		{
104		if (empty($this->internal)) {
105		throw new UnderflowException();
106		}
107
108		return $this->internal[0];
109		}
110
111		/**
112		* @inheritDoc
113		*/
114		public function get(int $index)
115		{
116		$this->checkRange($index);
117
118		return $this->internal[$index];
119		}
120
121		/**
122		* @inheritDoc
123		*/
124		public function insert(int $index, ...$values)
125		{
126		if ($index < 0 \|\| $index > count($this->internal)) {
127		throw new OutOfRangeException();
128		}
129
130		array_splice($this->internal, $index, 0, $values);
131		}
132
133		/**
134		* @inheritDoc
135		*/
136		public function join(string $glue = null): string
137		{
138		return implode($glue, $this->internal);
139		}
140
141		/**
142		* @inheritDoc
143		*/
144		public function last()
145		{
146		if ($this->isEmpty()) {
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `isEmpty()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
147		throw new UnderflowException();
148		}
149
150		return end($this->internal);
151		}
152
153		/**
154		* @inheritDoc
155		*/
156		public function map(callable $callback): \Ds\Sequence
157		{
158		return new self(array_map($callback, $this->internal));
159		}
160
161		/**
162		* @inheritDoc
163		*/
164	View Code Duplication	public function pop()
		0 ignored issues – show Duplication introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
165		{
166		if ($this->isEmpty()) {
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `isEmpty()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
167		throw new UnderflowException();
168		}
169
170		$value = array_pop($this->internal);
171		$this->adjustCapacity();
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `adjustCapacity()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
172
173		return $value;
174		}
175
176		/**
177		* @inheritDoc
178		*/
179		public function push(...$values)
180		{
181		if ($values) {
		0 ignored issues – show Bug Best Practice introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report The expression `$values` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
182		array_push($this->internal, ...$values);
183		$this->adjustCapacity();
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `adjustCapacity()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
184		}
185		}
186
187		/**
188		* @inheritDoc
189		*/
190		public function reduce(callable $callback, $initial = null)
191		{
192		return array_reduce($this->internal, $callback, $initial);
193		}
194
195		/**
196		* @inheritDoc
197		*/
198		public function remove(int $index)
199		{
200		$this->checkRange($index);
201
202		$value = array_splice($this->internal, $index, 1, null)[0];
203		$this->adjustCapacity();
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `adjustCapacity()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
204
205		return $value;
206		}
207
208		/**
209		* @inheritDoc
210		*/
211		public function reverse()
212		{
213		$this->internal = array_reverse($this->internal);
214		}
215
216		/**
217		* @inheritDoc
218		*/
219		public function reversed(): \Ds\Sequence
220		{
221		return new self(array_reverse($this->internal));
222		}
223
224		private function normalizeRotations(int $rotations, int $count)
225		{
226		if ($rotations < 0) {
227		return $count - (abs($rotations) % $count);
228		}
229
230		return $rotations % $count;
231		}
232
233		/**
234		* @inheritDoc
235		*/
236		public function rotate(int $rotations)
237		{
238		if (count($this) < 2) {
239		return;
240		}
241
242		$rotations = $this->normalizeRotations($rotations, count($this));
243
244		while ($rotations--) {
245		$this->push($this->shift());
246		}
247		}
248
249		/**
250		* @inheritDoc
251		*/
252		public function set(int $index, $value)
253		{
254		$this->checkRange($index);
255		$this->internal[$index] = $value;
256		}
257
258		/**
259		* @inheritDoc
260		*/
261	View Code Duplication	public function shift()
		0 ignored issues – show Duplication introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
262		{
263		if ($this->isEmpty()) {
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `isEmpty()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
264		throw new UnderflowException();
265		}
266
267		$value = array_shift($this->internal);
268		$this->adjustCapacity();
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `adjustCapacity()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
269
270		return $value;
271		}
272
273		/**
274		* @inheritDoc
275		*/
276		public function slice(int $offset, int $length = null): \Ds\Sequence
277		{
278		if (func_num_args() === 1) {
279		$length = count($this);
280		}
281
282		return new self(array_slice($this->internal, $offset, $length));
283		}
284
285		/**
286		* @inheritDoc
287		*/
288		public function sort(callable $comparator = null)
289		{
290		if ($comparator) {
291		usort($this->internal, $comparator);
292		} else {
293		sort($this->internal);
294		}
295		}
296
297		/**
298		* @inheritDoc
299		*/
300		public function sorted(callable $comparator = null): \Ds\Sequence
301		{
302		$internal = $this->internal;
303
304		if ($comparator) {
305		usort($internal, $comparator);
306		} else {
307		sort($internal);
308		}
309
310		return new self($internal);
311		}
312
313		/**
314		* @inheritDoc
315		*/
316		public function sum()
317		{
318		return array_sum($this->internal);
319		}
320
321		/**
322		* @inheritDoc
323		*/
324		public function unshift(...$values)
325		{
326		if ($values) {
		0 ignored issues – show Bug Best Practice introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report The expression `$values` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
327		array_unshift($this->internal, ...$values);
328		$this->adjustCapacity();
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report It seems like `adjustCapacity()` must be provided by classes using this trait. How about adding it as abstract method to this trait? This check looks for methods that are used by a trait but not required by it. To illustrate, let’s look at the following code example trait Idable { public function equalIds(Idable $other) { return $this->getId() === $other->getId(); } } The trait `Idable` provides a method `equalsId` that in turn relies on the method `getId()`. If this method does not exist on a class mixing in this trait, the method will fail. Adding the `getId()` as an abstract method to the trait will make sure it is available. Loading history...
329		}
330		}
331
332		/**
333		*
334		*/
335		public function intersect(\Ds\Sequence $sequence): \Ds\Sequence
336		{
337		return $this->filter(function($value) use ($sequence) {
338		return $sequence->contains($value);
339		});
340		}
341
342		/**
343		*
344		*/
345		public function diff(\Ds\Sequence $sequence): \Ds\Sequence
346		{
347		return $this->filter(function($value) use ($sequence) {
348		return ! $sequence->contains($value);
349		});
350		}
351
352		/**
353		*
354		*/
355		public function union(\Ds\Sequence $sequence): \Ds\Sequence
356		{
357		return $this->merge($sequence);
358		}
359
360		/**
361		*
362		*/
363		public function xor(\Ds\Sequence $sequence): \Ds\Sequence
364		{
365		return $this->union($sequence)->filter(function($value) {
366		return $this->contains($value) ^ $sequence->contains($value);
		0 ignored issues – show Bug introduced 2016-07-31 18:41 UTC by Report Bug Copy Issue Report The variable `$sequence` does not exist. Did you forget to declare it? This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug. Loading history...
367		});
368		}
369
370		/**
371		*
372		*
373		* @param int $index
374		*/
375		private function checkRange(int $index)
376		{
377		if ($index < 0 \|\| $index >= count($this->internal)) {
378		throw new OutOfRangeException();
379		}
380		}
381
382		/**
383		*
384		*/
385		public function getIterator()
386		{
387		foreach ($this->internal as $value) {
388		yield $value;
389		}
390		}
391
392		/**
393		* @inheritdoc
394		*/
395		public function clear()
396		{
397		$this->internal = [];
398		$this->capacity = self::MIN_CAPACITY;
		0 ignored issues – show Bug introduced 2016-03-01 00:43 UTC by Report Bug Copy Issue Report The property `capacity` does not exist. Did you maybe forget to declare it? In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code: class MyClass { } $x = new MyClass(); $x->foo = true; Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: class MyClass { public $foo; } $x = new MyClass(); $x->foo = true; Loading history...
399		}
400
401		/**
402		* @inheritdoc
403		*/
404		public function offsetSet($offset, $value)
405		{
406		if ($offset === null) {
407		$this->push($value);
408		} else {
409		$this->set($offset, $value);
410		}
411		}
412
413		/**
414		* @inheritdoc
415		*/
416		public function &offsetGet($offset)
417		{
418		$this->checkRange($offset);
419		return $this->internal[$offset];
420		}
421
422		/**
423		* @inheritdoc
424		*/
425		public function offsetUnset($offset)
426		{
427		// Unset should be quiet, so we shouldn't allow 'remove' to throw.
428		if (is_integer($offset) && $offset >= 0 && $offset < count($this)) {
429		$this->remove($offset);
430		}
431		}
432
433		/**
434		* @inheritdoc
435		*/
436		public function offsetExists($offset)
437		{
438		if ($offset < 0 \|\| $offset >= count($this)) {
439		return false;
440		}
441
442		return $this->get($offset) !== null;
443		}
444		}
445

php-ds / polyfill

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Sequence::intersect() A

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