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:

Wherever you would use an array as a list (not concerned with keys).
A more efficient alternative to SplDoublyLinkedList and SplFixedArray.

Sinopsis de la Interfaz

Ds\Sequence implements Ds\Collection {

/* Métodos */

abstract public void allocate ( int $capacity )

abstract public void apply ( callable $callback )

abstract public int capacity ( void )

abstract public bool contains ([ mixed $...values ] )

abstract public Ds\Sequence filter ([ callable $callback ] )

abstract public mixed find ( mixed $value )

abstract public mixed first ( void )

abstract public mixed get ( int $index )

abstract public void insert ( int $index [, mixed $...values ] )

abstract public string join ([ string $glue ] )

abstract public mixed last ( void )

abstract public Ds\Sequence map ( callable $callback )

abstract public Ds\Sequence merge ( mixed $values )

abstract public mixed pop ( void )

abstract public void push ([ mixed $...values ] )

abstract public mixed reduce ( callable $callback [, mixed $initial ] )

abstract public mixed remove ( int $index )

abstract public void reverse ( void )

abstract public Ds\Sequence reversed ( void )

abstract public void rotate ( int $rotations )

abstract public void set ( int $index , mixed $value )

abstract public mixed shift ( void )

abstract public Ds\Sequence slice ( int $index [, int $length ] )

abstract public void sort ([ callable $comparator ] )

abstract public Ds\Sequence sorted ([ callable $comparator ] )

abstract public number sum ( void )

abstract public void unshift ([ mixed $values ] )

}

Tabla de contenidos

Ds\Sequence::allocate — Allocates enough memory for a required capacity.
Ds\Sequence::apply — Updates all values by applying a callback function to each value.
Ds\Sequence::capacity — Returns the current capacity.
Ds\Sequence::contains — Determines if the sequence contains given values.
Ds\Sequence::filter — Creates a new sequence using a callable to determine which values to include.
Ds\Sequence::find — Attempts to find a value's index.
Ds\Sequence::first — Returns the first value in the sequence.
Ds\Sequence::get — Returns the value at a given index.
Ds\Sequence::insert — Inserts values at a given index.
Ds\Sequence::join — Joins all values together as a string.
Ds\Sequence::last — Returns the last value.
Ds\Sequence::map — Returns the result of applying a callback to each value.
Ds\Sequence::merge — Returns the result of adding all given values to the sequence.
Ds\Sequence::pop — Removes and returns the last value.
Ds\Sequence::push — Adds values to the end of the sequence.
Ds\Sequence::reduce — Reduces the sequence to a single value using a callback function.
Ds\Sequence::remove — Removes and returns a value by index.
Ds\Sequence::reverse — Reverses the sequence in-place.
Ds\Sequence::reversed — Returns a reversed copy.
Ds\Sequence::rotate — Rotates the sequence by a given number of rotations.
Ds\Sequence::set — Updates a value at a given index.
Ds\Sequence::shift — Removes and returns the first value.
Ds\Sequence::slice — Returns a sub-sequence of a given range.
Ds\Sequence::sort — Sorts the sequence in-place.
Ds\Sequence::sorted — Returns a sorted copy.
Ds\Sequence::sum — Returns the sum of all values in the sequence.
Ds\Sequence::unshift — Adds values to the front of the sequence.