Peela, a tiny (LIFO) Stack.
If you need a fast (FIFO) Queue, try Train.
$ npm install peela [-g]
// clone repo
$ git clone git@github.com:rootslab/peela.gitrequire
var Peela = require( 'peela' );See examples.
$ cd peela/
$ npm testCreate an instance, optionally with an Array of elements.
Peela( [ Array elements ] )
// or
new Peela( [ Array elements ] )// an array representing the stack.
Peela.stack : ArrayArguments within [ ] are optional.
/*
* Push one or multiple objects into the stack. it uses
* the same signature as Array#push.
* It returns the current number of items.
*/
Peela#push( [ Object obj1 [, Object obj2 .. ] ] ) : Number
/*
* Concatenate an Array to the stack head, optionally reversing it
* before the operation.
* It returns the current Peela instance.
*
* NOTE: It accepts a single argument, that could be also
* a generic element.
* NOTE: the action of reversing the array to concatenate, could be
* useful if you want to re-push ( previously popped ) K items into
* the stack, for example, try:
* var p = Peela( [ 0, 1, 2, 3, 4 ] );
* p.concat( p.pop( 3 ), true )
*/
Peela#concat( [ Array array [, Boolean reverse ] ] ) : Peela
/*
* Evict one or multiple elements, if a number k was specified,
* it returns an array of K elements, with K <= k.
* If k > size(), all elements are returned.
*
* NOTE: #pop() a single element from the stack, it does not
* return an Array, but the element itself.
* NOTE: For popping all elements you could also do Peela#pop( Infinity )
*/
Peela#pop( [ Number k ] ) : Array
/*
* Get the head element or an element at a certain index.
*/
Peela#head( [ Number index ] ) : Object
/*
* Get an element starting from the tail.
*/
Peela#tail( [ Number index ] ) : Object
/*
* Get the stack size.
*/
Peela#size() : Number
/*
* Return the index of an element in the stack, optionally
* starting the search from an offset index.
* If element was not found, it returns -1.
*/
Peela#indexOf( Object el [, Number offset ] ) : Object
/*
* Empty the stack for default.
* If bool is set to false, no action will be done.
* It returns the number of elements evicted.
*/
Peela#flush( [ Boolean bool ] ) : NumberCopyright (c) 2013-present < Guglielmo Ferri : 44gatti@gmail.com >
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