deferred

not asynchronous function executed as jQuery Deferred

为君一笑 提交于 2019-12-04 01:13:09
Lets say I want to process some tasks in the synchronous manner, so I have this function: function executePromiseQueueSync(queue){ var seed = $.Deferred(), finalPromise; finalPromise = _.reduce(queue, function(memo, promise){ return memo.then(function(){ return promise.funct.apply(null, promise.argmnt); }); }, seed.promise()); seed.resolve(); return finalPromise; } Now I can use it to process some files: _.each(fileList, function(element, index, list){ _.each(element, function(el, idx, lst){ promisesQueue.push({funct: processFile, argmnt:[el, index + (len - fileList.length) ,len]}); }); });

twisted deferred/callbacks and asynchronous execution

不想你离开。 提交于 2019-12-03 14:15:56
I'm trying to figure out how can i make my code more asynchronous using twisted. A function returns a deferred object then i add a list of callbacks the first callback will be called after the deferred function provides some result through deferred_obj.callback then, in the chain of callbacks, the first callback will do something with the data and call the second callback and etc. however chained callbacks will not be considered asynchronous because they're chained and the event loop will keep firing each one of them concurrently until there is no more, right? However, if I have a deferred

How to make deferred deep linking?

夙愿已清 提交于 2019-12-03 14:08:25
问题 How to make deferred deep linking and generate unique mobile signature. I try using IP Address, screen-size, OS version, device name but still not get succeed. 回答1: The comment links to a great answer, certainly. High level, here are the steps: Your links should point to a page on your site that collects a digital fingerprint That page should collect, at minimum, IP address, OS, OS version and screen size (width and height). Should send to your server and place in a persistent store. Redis

JavaScript naming convention for promises? [closed]

喜夏-厌秋 提交于 2019-12-03 10:25:02
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . I feel it would be useful to have a naming convention for JavaScript variables which hold a promise . I don't generally like or

in JavaScript, how to wrap a promise in timeout?

随声附和 提交于 2019-12-03 10:13:52
It's a common pattern to implement timeout of some asynchronous function, using deffered/promise: // Create a Deferred and return its Promise function timeout(funct, args, time) { var dfd = new jQuery.Deferred(); // execute asynchronous code funct.apply(null, args); // When the asynchronous code is completed, resolve the Deferred: dfd.resolve('success'); setTimeout(function() { dfd.reject('sorry'); }, time); return dfd.promise(); } Now we can execute some asynchronous function called myFunc and handle timeout: // Attach a done and fail handler for the asyncEvent $.when( timeout(myFunc, [some

Q.js - Using deferred

六眼飞鱼酱① 提交于 2019-12-03 06:09:37
How do I get the value of the text from the example below? Q.js has an example on using Deferred: var deferred = Q.defer(); FS.readFile("foo.txt", "utf-8", function (error, text) { if (error) { deferred.reject(new Error(error)); } else { deferred.resolve(text); } }); return deferred.promise; In this case, there is a node async function being used. What I want to do is get the value of text from the deferred.promise being returned. When I console.log(deferred.promise) I get this: { promiseSend: [Function], valueOf: [Function] } What am I doing wrong (as I just copy/pasted the example from here:

Difference between Spring MVC's @Async, DeferredResult and Callable

狂风中的少年 提交于 2019-12-03 05:40:51
问题 I've a long-running task defined in a Spring service. It is started by a Spring MVC controller. I want to start the service and return back an HttpResponse to the caller before the service ends. The service saves a file on file system at end. In javascript I've created a polling job to check service status. In Spring 3.2 I've found the @Async annotation, but I don't understand how it is different from DeferredResult and Callable . When do I have to use @Async and when should I use

Dynamic multiple Deferred jQuery Ajax calls

China☆狼群 提交于 2019-12-03 05:40:37
问题 Using the Deferred pattern from jQuery http://api.jquery.com/jQuery.when/, I am trying to make multiple jsonp ajax calls and wait for the results before moving to the next step. I can accomplish this using a fixed amount of calls because I can set the number of resolved argument parameters in the ".done()" deferred object. But in my application it doesn't work because the number of calls is dynamic and always unknown. This first simplified example works because I can set the number of args in

What is the difference between .resolve() and .promise()?

混江龙づ霸主 提交于 2019-12-03 05:36:02
问题 I'm digging into jQuery's deferred features. I've tried several examples on the internet. I understood its concept, but I don't understand the difference between resolve() and promise() . What are differences between resolve() and promise() ? 回答1: Both resolve() and promise() are methods on the jQuery Deferred object. First a snippet from the jQuery documentation about Deferred: One model for understanding Deferred is to think of it as a chain-aware function wrapper. The deferred.then(),

How to make deferred deep linking?

醉酒当歌 提交于 2019-12-03 05:06:44
How to make deferred deep linking and generate unique mobile signature. I try using IP Address, screen-size, OS version, device name but still not get succeed. The comment links to a great answer, certainly. High level, here are the steps: Your links should point to a page on your site that collects a digital fingerprint That page should collect, at minimum, IP address, OS, OS version and screen size (width and height). Should send to your server and place in a persistent store. Redis works great for this because of its fast lookup times. Also record some sort of unique identifier for which