SerializedAsyncQueue

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Mnicpt
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2,800 Kb
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36,432
  1. SerializedAsyncQueue Previews
  2. SerializedAsyncQueue HTML Codes
  3. SerializedAsyncQueue JS Codes

How do I make an serializedasyncqueue?

Queue that processes asynchronous functions in sequence. Functions are chained together through a callback function which is used to call the next function in the sequence. If you don't prefer to append a callback function at the end of your function parameters,. What is a serializedasyncqueue? How do you make a serializedasyncqueue? This script and codes were developed by Mnicpt on 30 July 2022, Saturday.

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SerializedAsyncQueue - Script Codes HTML Codes

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SerializedAsyncQueue - Script Codes JS Codes

/** * Queue that processes asynchronous functions in sequence. Functions are chained together * through a callback function which is used to call the next function in the sequence. * If you don't prefer to append a callback function at the end of your function parameters, * then wrap your functionality in a function with a callback parameter and provide your * implementation within. * * Properties: * queue - array of batched functions * processing - are there current functions being executed * * Methods: * enqueue - add batch of functions to queue * dequeue - remove next batch of functions to execute * processBatch - processes a single batch of functions * process - execute batch of functions in series * * */
var AsyncQueue = function() { this.queue = []; this.processing = false; this.enqueue = function(funcs) { var functions = []; for (var i = 0; i < funcs.length; i++) { functions.unshift(funcs[i]); } this.queue.unshift(functions); }; this.dequeue = function() { return this.queue.pop(); }; this.process = function() { if (this.processing) { this.enqueue(arguments); } else { this.processing = true; var functions = []; for (var i = 0; i < arguments.length; i++) { functions.unshift(arguments[i]); } var self = this; (function nextBatch() { processBatch(functions, function() { if (self.queue.length > 0) { functions = self.dequeue(); nextBatch(); } else { self.processing = false; } }); })(); } }; var processBatch = function(funcs, done) { var self = this; (function next() { if (funcs.length > 0) { var currentFunc = funcs.pop(); currentFunc.apply(self, Array.prototype.slice.call(arguments, 0).concat([next])); if (funcs.length == 0) { this.processing = false; done(); } } })(); }; } // tests describe("Async Function Queue Processor", function() { var queue = new AsyncQueue(); beforeEach(function(done) { done(); }); it("should process a single batch of asynchronous functions in series", function(done) { var value = 0; var A = function(callback) { setTimeout(function() { value = 10; callback(20); }, 200); }; var B = function(add, callback) { expect(value).toEqual(10); setTimeout(function() { var addedValue = value + add; value = addedValue; expect(value).toEqual(30); callback(); }, 200); }; var C = function(callback) { expect(value).toEqual(30); value += 10; setTimeout(function() { expect(value).toEqual(40); value += 10; callback(); }, 200); }; queue.process(A, B, C, function() { expect(value).toEqual(50); done(); }); }); it("should process multiple batches of asynchronous functions in series", function(done) { var num = 0; queue.process(function(callback) { expect(num++).toEqual(0); setTimeout(function() { expect(num++).toEqual(1); callback(); }, 100); }, function(callback) { expect(num++).toEqual(2); setTimeout(function() { expect(num++).toEqual(3); callback(); }, 100); }, function() { expect(num++).toEqual(4); }); queue.process(function(callback) { expect(num++).toEqual(5); setTimeout(function() { expect(num++).toEqual(6); callback(); }, 100); }, function(callback) { expect(num++).toEqual(7); setTimeout(function() { expect(num++).toEqual(8); callback(); }, 100); }, function() { expect(num++).toEqual(9); done(); }); }); });
SerializedAsyncQueue - Script Codes
SerializedAsyncQueue - Script Codes
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Developer Mnicpt
Username mnicpt
Uploaded July 30, 2022
Rating 3
Size 2,800 Kb
Views 36,432
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