Interface Salient\Contract\Collection\CollectionInterface

`<TKey is array-key, TValue>`

`extends`	`ArrayAccess<TKey, TValue>, Arrayable<TKey, TValue\|mixed[]>, Countable, IteratorAggregate<TKey, TValue>, JsonSerializable, Jsonable`

An array-like collection of items

Salient\Contract\Collection\CollectionInterface extends ArrayAccess<TKey, TValue>, Arrayable<TKey, TValue|mixed[]>, Countable, IteratorAggregate<TKey, TValue>, JsonSerializable, Jsonable
- Salient\Collection\ImmutableCollection implements CollectionInterface<TKey, TValue>, Immutable uses ImmutableCollectionTrait
- Salient\Collection\AbstractTypedCollection implements CollectionInterface<TKey, TValue> uses CollectionTrait
  - Salient\Sync\Support\SyncErrorCollection implements SyncErrorCollectionInterface
- Salient\Collection\Collection implements CollectionInterface<TKey, TValue> uses CollectionTrait
- Salient\Contract\Sync\SyncErrorCollectionInterface extends CollectionInterface<int, SyncErrorInterface>, Stringable
  - Salient\Sync\Support\SyncErrorCollection implements SyncErrorCollectionInterface
- Salient\Contract\Collection\ListInterface extends CollectionInterface<int, TValue>
  - Salient\Collection\AbstractTypedList implements ListInterface<TValue> uses ListTrait
  - Salient\Collection\ImmutableListCollection implements ListInterface<TValue>, Immutable uses ImmutableListTrait
  - Salient\Collection\ListCollection implements ListInterface<TValue> uses ListTrait
- Salient\Contract\Http\HttpHeadersInterface extends CollectionInterface<string, string[]>, Immutable, Stringable
  - Salient\Http\HttpHeaders implements HttpHeadersInterface uses ReadableCollectionTrait, ImmutableArrayAccessTrait, HasMutator

Located at Toolkit/Contract/Collection/CollectionInterface.php

Methods


					
	public

__construct(Arrayable<TKey, TValue>|iterable<TKey, TValue> $items = [])

Implemented by

Salient\Http\HttpHeaders::__construct()


					
	public
					static

empty(): static

Get a new collection with no items


					
	public

copy(): static

Get a copy of the collection


					
	public

set(TKey $key, TValue $value): static

Add or replace an item with a given key

Implemented by

Salient\Http\HttpHeaders::set()


					
	public

has(TKey $key): bool

Check if an item with a given key exists


					
	public

get(TKey $key): TValue

Get the item with the given key

Throws

OutOfRangeException

if there is no such item in the collection.


					
	public

unset(TKey $key): static

Remove an item with a given key

Implemented by

Salient\Http\HttpHeaders::unset()


					
	public

merge(Arrayable<TKey, TValue>|iterable<TKey, TValue> $items): static

Merge the collection with the given items

Implemented by

Salient\Http\HttpHeaders::merge()


					
	public

sort(): static

Sort items in the collection

Implemented by

Salient\Http\HttpHeaders::sort()


					
	public

reverse(): static

Reverse the order of items in the collection

Implemented by

Salient\Http\HttpHeaders::reverse()


					
	public

forEach<T is TValue|TKey|array{TKey, TValue}>(
	callable(T, T|null $next, T|null $prev): mixed $callback,
	int-mask-of<CollectionInterface::*> $mode = CollectionInterface::CALLBACK_USE_VALUE,
): $this

Pass each item in the collection to a callback

The callback's return values are discarded.


					
	public

map<T is TValue|TKey|array{TKey, TValue}, TReturn>(
	callable(T, T|null $next, T|null $prev): TReturn $callback,
	int-mask-of<CollectionInterface::*> $mode = CollectionInterface::CALLBACK_USE_VALUE,
): static<TKey, TReturn>

Pass each item in the collection to a callback and populate a new collection with its return values

Implemented by

Salient\Http\HttpHeaders::map()


					
	public

filter<T is TValue|TKey|array{TKey, TValue}>(
	callable(T, T|null $next, T|null $prev): bool $callback,
	int-mask-of<CollectionInterface::*> $mode = CollectionInterface::CALLBACK_USE_VALUE,
): static

Reduce the collection to items that satisfy a callback

Implemented by

Salient\Http\HttpHeaders::filter()


					
	public

find<T is TValue|TKey|array{TKey, TValue}>(
	callable(T, T|null $next, T|null $prev): bool $callback,
	int-mask-of<CollectionInterface::*> $mode = CollectionInterface::CALLBACK_USE_VALUE | CollectionInterface::FIND_VALUE,
): ($mode is 8|9|10|11 ? TKey : TValue)|null

Get the first item that satisfies a callback, or null if there is no such item in the collection


					
	public

only(TKey[] $keys): static

Reduce the collection to items with keys in an array

Implemented by

Salient\Http\HttpHeaders::only()


					
	public

onlyIn(array<TKey, true> $index): static

Reduce the collection to items with keys in an index

Implemented by

Salient\Http\HttpHeaders::onlyIn()


					
	public

except(TKey[] $keys): static

Reduce the collection to items with keys not in an array

Implemented by

Salient\Http\HttpHeaders::except()


					
	public

exceptIn(array<TKey, true> $index): static

Reduce the collection to items with keys not in an index

Implemented by

Salient\Http\HttpHeaders::exceptIn()


					
	public

slice(int $offset, ?int $length = null): static

Extract a slice of the collection

Implemented by

Salient\Http\HttpHeaders::slice()


					
	public

hasValue(TValue $value, bool $strict = false): bool

Check if a value is in the collection


					
	public

keyOf(TValue $value, bool $strict = false): TKey|null

Get the first key at which a value is found, or null if it's not in the collection


					
	public

firstOf(TValue $value): TValue|null

Get the first item equal but not necessarily identical to a value, or null if it's not in the collection


					
	public

all(): array<TKey, TValue>

Get all items in the collection


					
	public

first(): TValue|null

Get the first item, or null if the collection is empty


					
	public

last(): TValue|null

Get the last item, or null if the collection is empty


					
	public

nth(int $n): TValue|null

Get the nth item (1-based), or null if there is no such item in the collection

If $n is negative, the nth item from the end of the collection is returned.


					
	public

pop(TValue|null &$last = null): static

Pop an item off the end of the collection

Parameters

$last

Receives the value removed from the collection, or null if the collection is empty.

Implemented by

Salient\Http\HttpHeaders::pop()


					
	public

shift(TValue|null &$first = null): static

Shift an item off the beginning of the collection

Parameters

$first

Receives the value removed from the collection, or null if the collection is empty.

Implemented by

Salient\Http\HttpHeaders::shift()

Methods inherited from ArrayAccess
`offsetExists(), offsetGet(), offsetSet(), offsetUnset()`

Methods inherited from Salient\Contract\Core\Arrayable
`toArray()`

Methods inherited from Countable
`count()`

Methods inherited from IteratorAggregate
`getIterator()`

Methods inherited from JsonSerializable
`jsonSerialize()`

Methods inherited from Salient\Contract\Core\Jsonable
`toJson()`

Constants
`public`	`CALLBACK_USE_VALUE = 1` Pass the value of each item to the callback Pass the value of each item to the callback	#
`public`	`CALLBACK_USE_KEY = 2` Pass the key of each item to the callback Pass the key of each item to the callback	#
`public`	`CALLBACK_USE_BOTH = 3` Pass a key-value pair to the callback for each item Pass a key-value pair to the callback for each item	#
`public`	`FIND_VALUE = 4` Return the first item that satisfies the callback Return the first item that satisfies the callback	#
`public`	`FIND_KEY = 8` Return the key of the first item that satisfies the callback Return the key of the first item that satisfies the callback	#

Namespaces

Interfaces

Interface Salient\Contract\Collection\CollectionInterface

`<TKey is array-key, TValue>`

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Parameters

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