synchronous

Sometimes I need to call WCF service in Silverlight and block UI until it returns. Sure I can do it in three steps: Setup handlers and block UI Call service Unblock UI when everything is done. However, I'd like to add DoSomethingSync method to service client class and just call it whenever I need. Is it possible? Has anyone really implemented such a method? UPDATE: Looks like the answer is not to use sync calls at all. Will look for some easy to use pattern for async calls. Take a look at this post (taken from comments) for more. Here's the point; you shouldn't do sync IO in Silverlight. Stop

How do I use the Meteor wrapAsync ? Below is what I am trying to do if (tempTreatment.groupId === undefined) { // create new group Meteor.wrapAsync(Meteor.call('createTreatmentGroup', salon, tempTreatment.groupName, tempTreatment.groupName)); // get group id var getGroup = Meteor.wrapAsync(Meteor.call('getTreatmentGroup', salon, tempTreatment.groupName)); console.log(getGroup); tempTreatment.groupId = getGroup._id; } I want to run these two Meteor.call functions synchronosly but I get undefined on console.log(getGroup); which shuold just return an object. Meteor.wrapAsync is a server-side API

I have lot of confusion in promise. It's a synchronous or asynchronous ? return new Promise (function(resolved,reject){ //sync or async? }); The function you pass into the Promise constructor runs synchronously, but anything that depends on its resolution will be called asynchronously. Even if the promise resolves immediately, any handlers will execute asynchronously (similar to when you setTimeout(fn, 0) ) - the main thread runs to the end first. This is true no matter your Javascript environment - no matter whether you're in Node or a browser. console.log('start'); const myProm = new Promise

Function is : [1,2,3].map( function (item) { console.log(item); //return 'something'; }); My expected behaviour is getting only 1 as output, unless i uncomment the //return 'something' But i really get 1 2 3 What am i doing wrong ? UPDATE: i am testing that with nodejs. i really dont understand. var async = require("async"); [1,2,3].map( function (item) { console.log(item); //return 'something'; }); async.map([1,2,3], function (item,callback) { console.log(item); //callback(null,true) }, function (err,result) { console.log(result); } ); Both return the same 1 2 3 And i really would like to

This question already has an answer here: How should I call 3 functions in order to execute them one after the other? 10 answers I wanna synchronized functions just like jQuery's $.ajax({ .., async: false, .. }); . function A() { lalala .. }; function B() { dadada .. }; function C() { .. }; , those all including some effect like fadeIn, Out, slide... etc. However I just found if those functions called like below.. A(); B(); C(); All effect start at almost same time. In my understanding, this happens because the function called synchronously but it doesn't mean that function B() started after

I have the following HTML Code: <input type='file' multiple> And Here's my JS Code: var inputFiles = document.getElementsByTagName("input")[0]; inputFiles.onchange = function(){ var fr = new FileReader(); for(var i = 0; i < inputFiles.files.length; i++){ fr.onload = function(){ console.log(i) // Prints "0, 3, 2, 1" in case of 4 chosen files } } fr.readAsDataURL(inputFiles.files[i]); } So my question is, how can I make this loop synchronous ? That is first wait for the file to finish loading then move on to the next file. Someone told me to use JS Promises. But I can't make it to work. Here's