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The Sequence interface

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Introducción

A Sequence describes the behaviour of values arranged in a single, linear dimension. Some languages refer to this as a "List". It’s similar to an array that uses incremental integer keys, with the exception of a few characteristics:

  • Values will always be indexed as [0, 1, 2, …, size - 1].
  • Only allowed to access values by index in the range [0, size - 1].

Use cases:

Sinopsis de la Interfaz

Ds\Sequence implements Ds\Collection , ArrayAccess {
/* Métodos */
abstract public allocate ( int $capacity ) : void
abstract public apply ( callable $callback ) : void
abstract public capacity ( ) : int
abstract public contains ( mixed ...$values ) : bool
abstract public filter ( callable $callback = ? ) : Ds\Sequence
abstract public find ( mixed $value ) : mixed
abstract public first ( ) : mixed
abstract public get ( int $index ) : mixed
abstract public insert ( int $index , mixed ...$values ) : void
abstract public join ( string $glue = ? ) : string
abstract public last ( ) : mixed
abstract public map ( callable $callback ) : Ds\Sequence
abstract public merge ( mixed $values ) : Ds\Sequence
abstract public pop ( ) : mixed
abstract public push ( mixed ...$values ) : void
abstract public reduce ( callable $callback , mixed $initial = ? ) : mixed
abstract public remove ( int $index ) : mixed
abstract public reverse ( ) : void
abstract public reversed ( ) : Ds\Sequence
abstract public rotate ( int $rotations ) : void
abstract public set ( int $index , mixed $value ) : void
abstract public shift ( ) : mixed
abstract public slice ( int $index , int $length = ? ) : Ds\Sequence
abstract public sort ( callable $comparator = ? ) : void
abstract public sorted ( callable $comparator = ? ) : Ds\Sequence
abstract public sum ( ) : int|float
abstract public unshift ( mixed $values = ? ) : void
}

Historial de cambios

Versión Descripción
PECL ds 1.3.0 The interface now extends ArrayAccess.

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