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linked-queue
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When I was using javascript Array and calling array.shift() method to get first element and It was terrible if array contains more than 100,000 elements.
var start = new Date().getTime()
for(var i = 0; i< 100000; i++){
array.shift();
}
var duration = new Date().getTime() - start;// duration is so large, greater than 3 minutes
I used Linked List to improve performance, and apply it for 1000,000 elements.
var start = new Date().getTime()
for(var i = 0; i< 1000000; i++){
queue.dequeue();
}
var duration = new Date().getTime() - start;// duration = 8 for 1000000 elements
var LQueue = require('linked-queue')
var queue = new LQueue()
queue.length === 0 //=> true
queue.enqueue(10)
queue.length //=> 1
queue.first() ; // => 10
queue.last() ; // => 10
queue.enqueueAll([11,12]); // queues elements: 10,11,12
queue.fist(); //=> 10
queue.last();// => 12
queue.length;// => 3
queue.dequeue()// return 10, queus elements: 11,12
queue.forEach(function(data){
console.log(data);
});
//=> print: 11 12
queue.dequeueAll(function(data){
console.log(data);
});
//=> print: 11 12
queue.length //return 0
queue.isEmpty(); //return true;
queue.enqueueAll([1,2]);
queue.length;//return 2
queue.clear();
queue.length// return 0
queue = new LQueue()
queue.enqueue(value)
Push a value on the end.
queue.enqueueAll(array)
Push all values of array on the end of queue.
value = queue.dequeue()
Remove a value off the beginning.
queue.dequeueAll(callbackfn)
Remove all values off the beginning. Each dequeued data will be call by callbackFn(data)
queue.length
return size of queue.
value = deque.forEach(callbackfn)
Get all values of queues without removing. Each data will be call by callbackFn(data)
value = queue.last()
Examine the value of the end without removing it.
value = queue.first()
Examine the value of the beginning without removing it.
queue.clear()
Remove all entries.
I was convinced by a blog posting
FAQs
Queues using linked list, faster than array.shift(), support enqueue,dequeue,enqueue all, dequeue all, clear, forEach, first, last
The npm package linked-queue receives a total of 374 weekly downloads. As such, linked-queue popularity was classified as not popular.
We found that linked-queue demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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