What you&#39;re experiencing is [source mapping][1]. This allows you to debug with readable code in your browser&#39;s developer tools when working with minified JS files.

The minified version of Underscore has this line at the end of the file:

    //# sourceMappingURL=underscore-min.map

Your browser&#39;s developers tools will try to download `underscore-min.map` when encountering this line.

If you want to get rid of the error, either:

1. Remove that line from `underscore-min.js`
1. Add [underscore-min.map](https://github.com/jashkenas/underscore/blob/master/underscore-min.map) and [underscore.js](https://github.com/jashkenas/underscore/blob/master/underscore.js) to your project.

[1]: http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/

I have `develop` &amp; `master` branches, my `develop` branch is messy now and i would like to reset it and make it as a copy of my `master`. i&#39;m not sure if merging the `master` into `develop` will make both of them identical. after trying to merge i got many conflicts i solved them using:

    git checkout develop
    git merge origin/master
    //got many conflicts
    git checkout . --theirs

is this enough for `develop` branch to be an identical copy to `master` ?

Thanks


 

how to reset develop branch to master

Is it possible to create a Chrome extension that modifies HTTP response bodies?

I have looked in the [Chrome Extension APIs](https://developer.chrome.com/extensions/api_index), but I haven&#39;t found anything to do this.

Modify HTTP responses from a Chrome extension

I have a web page that is part of a ASP.NET web site running on Azure.  It&#39;s run fine for quite a while now.  Out of the blue, I am suddenly having a problem with the browser trying to download a &quot;.map&quot; for Underscore.js.  I did some reading and apparently JQuery creates &quot;.map&quot; files as debugging aids for Javascript source files (&quot;.js&quot;).  However, if I look at the Scripts directory for my web site I see that this only happens for some JQuery source files and not all and I am not sure what the pattern is.

However, why would the browser be trying to load a &quot;map&quot; file for Underscore.js which is not part of JQuery?  Also, why would this suddenly start happening?  I added Underscore.js to the web page quite some time ago and never had this problem before.  

The exact error I get when I look in the Chrome Debugger Console tab is:

GET http://myazureapp.cloudapp.net/Scripts/underscore-min.map 404 (Not Found) Scripts/underscore-min.map:1

Missing Javascript &quot;.map&quot; file for Underscore.js when loading ASP.NET web page

I have a web page that is part of a ASP.NET web site running on Azure. It's run fine for quite a while now. Out of the blue, I am suddenly having a problem with the browser trying to download a ".map" for Underscore.js. I did some reading and apparently JQuery creates ".map" files as debugging aids for Javascript source files (".js"). However, if I look at the Scripts directory for my web site I see that this only happens for some JQuery source files and not all and I am not sure what the pattern is.
However, why would the browser be trying to load a "map" file for Underscore.js which is not part of JQuery? Also, why would this suddenly start happening? I added Underscore.js to the web page quite some time ago and never had this problem before.
The exact error I get when I look in the Chrome Debugger Console tab is:
GET <a href="http://myazureapp.cloudapp.net/Scripts/underscore-min.map" target="_blank" rel="noopener noreferrer">http://myazureapp.cloudapp.net/Scripts/underscore-min.map</a> 404 (Not Found) Scripts/underscore-min.map:1

I&#39;m trying to get google maps responsive and resize while keeping its center when windows resizes. I read other stack questions in regards such as:

[Responsive Google Map?][1] and [Center Google Maps (V3) on browser resize (responsive)][2]

from the second stack question [I got a link which helps me with part of the code][3] but I still have no luck. This is the code I am using, when I resize the window, the maps doesn&#39;t resize at all

        function initialize() {
          var mapOptions = {
           center: new google.maps.LatLng(40.5472,12.282715),
           zoom: 6,
           mapTypeId: google.maps.MapTypeId.ROADMAP
          };
          var map = new google.maps.Map(document.getElementById(&quot;map-canvas&quot;),
                    mapOptions);
        }
        google.maps.event.addDomListener(window, &#39;load&#39;, initialize);
	    google.maps.event.addDomListener(window, &quot;resize&quot;, function() {
         var center = map.getCenter();
         google.maps.event.trigger(map, &quot;resize&quot;);
         map.setCenter(center); 
        });

html

     &lt;div id=&quot;map-canvas&quot;/&gt;

css

    html { height: 100% }
    body { height: 100%; margin: 0; padding: 0; }
    #map-canvas { height: 100%; }


  [1]: https://stackoverflow.com/questions/15421369/responsive-google-map
  [2]: https://stackoverflow.com/questions/8792676/center-google-maps-v3-on-browser-resize-responsive
  [3]: http://hsmoore.com/keep-google-map-v3-centered-when-browser-is-resized/

Google maps responsive resize

For a specific use case I have to submit a single form the &quot;old way&quot;. Means, I use a form with action=&quot;&quot;. The response is streamed, so I am not reloading the page. I am completely aware that a typical AngularJS app would not submit a form that way, but so far I have no other choice.

That said, i tried to populate some hidden fields from Angular:

    &lt;input type=&quot;hidden&quot; name=&quot;someData&quot; ng-model=&quot;data&quot; /&gt; {{data}}

Please note, the correct value in data is shown.

The form looks like a standard form:

    &lt;form id=&quot;aaa&quot; name=&quot;aaa&quot; action=&quot;/reports/aaa.html&quot; method=&quot;post&quot;&gt;
    ...
    &lt;input type=&quot;submit&quot; value=&quot;Export&quot; /&gt;
    &lt;/form&gt;

If I hit submit, no value is sent to the server. If I change the input field to type &quot;text&quot; it works as expected. My assumption is the hidden field is not really populated, while the text field actually is shown due two-way-binding.

Any ideas how I can submit a hidden field populated by AngularJS?

AngularJS does not send hidden field value

I&#39;m building an app using meteor.js and MongoDB and I have a question about cursor.forEach().
I want to check some conditions in the beginning of each forEach iteration and then skip the element if I don&#39;t have to do the operation on it so I can save some time.

Here is my code:

    // Fetch all objects in SomeElements collection
    var elementsCollection = SomeElements.find();
    elementsCollection.forEach(function(element){
      if (element.shouldBeProcessed == false){
        // Here I would like to continue to the next element if this one 
        // doesn&#39;t have to be processed
      }else{
        // This part should be avoided if not neccessary
        doSomeLengthyOperation();
      }
    });
    
I know I could turn cursor to array using cursor.find().fetch() and then use regular for-loop to iterate over elements and use continue and break normally but I&#39;m interested if there is something similiar to use in forEach().



&quot;continue&quot; in cursor.forEach()

**Background**

I&#39;ve just started using grunt as of about 30mins ago. So bear with me.

But I have a rather simple script going that will look at my js and then compress it all into one file for me.

**Code**

    &quot;use strict&quot;;
    module.exports = function (grunt) {
    
        // load all grunt tasks
        require(&#39;matchdep&#39;).filterDev(&#39;grunt-*&#39;).forEach(grunt.loadNpmTasks);
    
        grunt.initConfig({
            pkg: grunt.file.readJSON(&#39;package.json&#39;),
            uglify: {
                options: {
                    beautify: true,
                    report: &#39;gzip&#39;
                },
                build: {
                    src: [&#39;docroot/js/*.js&#39;, &#39;docroot/components/pages/*.js&#39;, &#39;docroot/components/plugins/*.js&#39;],
                    dest: &#39;docroot/js/main.min.js&#39;
                }
            },
            watch: {
                options: {
                    dateFormat: function(time) {
                        grunt.log.writeln(&#39;The watch finished in &#39; + time + &#39;ms at&#39; + (new Date()).toString());
                        grunt.log.writeln(&#39;Waiting for more changes...&#39;);
                    }
                },
                js: {
                    files: &#39;&lt;%= uglify.build.src %&gt;&#39;,
                    tasks: [&#39;uglify&#39;]
                }
            }
        });
    
        grunt.registerTask(&#39;default&#39;, &#39;watch&#39;);
    
    }

**Question**

My main.min.js is getting included in the compile each time. Meaning my min.js is getting 2x, 4x, 8x, 16x etc etc. Is best way around this is to add an exception and ignore `main.min.js`?


How to ignore files grunt uglify

How to know in Firefox whether refresh button is clicked or browser back button is clicked... for both events `onbeforeunload()` method is a callback. For IE I am handling like this: 

    function CallbackFunction(event) {
        if (window.event) {
            if (window.event.clientX &lt; 40 &amp;&amp; window.event.clientY &lt; 0) {
                alert(&quot;back button is clicked&quot;);
   	        }else{
                alert(&quot;refresh button is clicked&quot;);
            }
    	}else{
            // want some condition here so that I can differentiate between
            // whether refresh button is clicked or back button is clicked.
        }
    }
    
    &lt;body onbeforeunload=&quot;CallbackFunction();&quot;&gt;	

But in Firefox **event.clientX** and **event.clientY**  are always 0. Is there any other way to find it?

How to know whether refresh button or browser back button is clicked in Firefox

- How can I get the id of the currently logged in user in **MVC 5**? I tried the StackOverflow suggestions, but they seem to be not for MVC 5. 
- Also, what is the MVC 5 best practice of assigning stuff to the users? (e.g. a `User` should have `Items`. Should I store the User&#39;s `Id` in `Item`? Can I extend the `User` class with an `List&lt;Item&gt;` navigation property?

I&#39;m using &quot;Individual User Accounts&quot; from the MVC template.

Tried these:

- https://stackoverflow.com/questions/1045197/how-do-i-get-the-current-user-in-an-mvc-application
- https://stackoverflow.com/questions/263486/how-to-get-current-user-in-asp-net-mvc
- https://stackoverflow.com/questions/13994967/get-logged-in-users-id - this throws the following:

&gt; &#39;Membership.GetUser()&#39; is null.

How to get current user, and how to use User class in MVC5?

I receive this error when trying to launch IIS Express from Visual Studio with a project that&#39;s configured to listen to an address other than localhost.  Visual Studio freezes for about 30 seconds before giving the error &quot;Unable to launch the IIS Express Web server&quot;.

I&#39;ve tried all the solutions posted to similar questions and I think I&#39;ve done everything correctly.  Here are the steps that I have taken:

1. Add the following reservation to HTTP.SYS:

    `netsh http add urlacl url=http://+:36899/ user=Everyone`

2. Run Visual Studio 2012 as an administrator (technically I don&#39;t think I should even have to since I set up HTTP.SYS manually).

3. Disable Windows Firewall.

4. Delete my IISExpress folder in my My Documents folder to ensure the default settings.

5. Allow Visual Studio to create the entry in applicationhost.config for my web project.  Then manually edit the config file to change `localhost` to `192.168.0.100` which is my local IP.  Then go back into the project properties in Visual Studio and change localhost to the IP and save the project so that my project is now set to `http://192.168.0.100:36899`.

I also tried changing the port and repeating the above steps just incase the port was in use for some reason.

I want to make my IIS Express developer instance accessible from my IP on the Internet for remote testing.

&quot;Unable to launch the IIS Express Web server&quot; error

The general answers such as [here][1] and [here][2]  to *fire-and-forget* questions is not to use async/await, but to use `Task.Run` or `TaskFactory.StartNew` passing in the synchronous method instead.&lt;br/&gt; However, sometimes the method that I want to *fire-and-forget* is async and there is no equivalent sync method. 

**Update Note/Warning:** As Stephen Cleary pointed out below, it is dangerous to continue working on a request after you have sent the response. The reason is because the AppDomain may be shut down while that work is still in progress. See the link in his response for more information. Anyways, I just wanted to point that out upfront, so that I don&#39;t send anyone down the wrong path.

I think my case is valid because the actual work is done by a different system (different computer on a different server) so I only need to know that the message has left for that system. If there is an exception there is nothing that the server or user can do about it and it does not affect the user, all I need to do is refer to the exception log and clean up manually (or implement some automated mechanism). If the AppDomain is shut down I will have a residual file in a remote system, but I will pick that up as part of my usual maintenance cycle and since its existence is no longer known by my web server (database) and its name is uniquely timestamped, it will not cause any issues while it still lingers. 

It would be ideal if I had access to a persistence mechanism as Stephen Cleary pointed out, but unfortunately I don&#39;t at this time. 

I considered just pretending that the DeleteFoo request has completed fine on the client side (javascript) while keeping the request open, but I need information in the response to continue, so it would hold things up. 

So, the original question...  

for example: 

    //External library
    public async Task DeleteFooAsync();

In my asp.net mvc code I want to call DeleteFooAsync in a fire-and-forget fashion - I don&#39;t want to hold up the response waiting for DeleteFooAsync to complete. If DeleteFooAsync fails (or throws an exception) for some reason, there is nothing that the user or the program can do about it so I just want to log an error. 

Now, I know that any exceptions will result in unobserved exceptions, so the simplest case I can think of is:

    //In my code
    Task deleteTask = DeleteFooAsync()

    //In my App_Start
    TaskScheduler.UnobservedTaskException += ( sender, e ) =&gt;
    {
        m_log.Debug( &quot;Unobserved exception! This exception would have been unobserved: {0}&quot;, e.Exception );
        e.SetObserved();
    };

Are there any risks in doing this? 

The other option that I can think of is to make my own wrapper such as: 

    private void async DeleteFooWrapperAsync()
    {
        try
        {
            await DeleteFooAsync();
        }
        catch(Exception exception )
        {
            m_log.Error(&quot;DeleteFooAsync failed: &quot; + exception.ToString());
        }
    }

and then call that with TaskFactory.StartNew (probably wrapping in an async action). However this seems like a lot of wrapper code each time I want to call an async method in a fire-and-forget fashion. 

My question is, what it the correct way to call an async method in a fire-and-forget fashion?

**UPDATE:**

Well, I found that the following in my controller (not that the controller action needs to be async because there are other async calls that are awaited):

    [AcceptVerbs( HttpVerbs.Post )]
    public async Task&lt;JsonResult&gt; DeleteItemAsync()
    {
        Task deleteTask = DeleteFooAsync();
        ...
    }

caused an exception of the form:

&gt; Unhandled Exception: System.NullReferenceException: Object reference
&gt; not set to an instance of an object. at System.Web.ThreadContext.AssociateWithCurrentThread(BooleansetImpersonationContext)

This is discussed [here][3] and seems to be to do with the SynchronizationContext and &#39;the returned Task was transitioned to a terminal state before all async work completed&#39;.

So, the only method that worked was: 

    Task foo = Task.Run( () =&gt; DeleteFooAsync() );

My understanding of why this works is because StartNew gets a new thread for DeleteFooAsync to work on.

Sadly, Scott&#39;s suggestion below does not work for handling exceptions in this case, because foo is not a DeleteFooAsync task anymore, but rather the task from Task.Run, so does not handle the exceptions from DeleteFooAsync. My UnobservedTaskException does eventually get called, so at least that still works. 

So, I guess the question still stands, how do you do fire-and-forget an async method in asp.net mvc?


  [1]: https://stackoverflow.com/a/12803259/746754
  [2]: https://stackoverflow.com/a/13800486/746754
  [3]: https://connect.microsoft.com/VisualStudio/feedback/details/745956/getting-null-reference-exception-in-asp-net-mvc-4-rc

Fire and forget async method in asp.net mvc

Is it possible to figure out the currently executing controller/action in OnActionExecuting?

How to get controller and action name in OnActionExecuting?

When I was trying to connect to SQL Server using the following code:

    SqlConnection con = new SqlConnection(&quot;Server=localhost,Authentication=Windows Authentication, Database=employeedetails&quot;);
    con.Open();
    SqlCommand cmd;
    string s = &quot;delete employee where empid=103&quot;;

I get the following error:

&gt; A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 25 - Connection string is not valid)

Connecting to SQL Server using windows authentication

The code in node.js is simple enough.

    _.each(users, function(u, index) {
      if (u.superUser === false) {
        //return false would break
        //continue?
      }
      //Some code
    });

My question is how can I continue to next index without executing &quot;Some code&quot; if superUser is set to false?

PS: I know an else condition would solve the problem. Still curious to know the answer.

How to &#39;continue&#39; inside a each loop : underscore, node.js

The ``map`` function in underscore.js, if called with a javascript object, returns an array of values mapped from the object&#39;s values.

    _.map({one: 1, two: 2, three: 3}, function(num, key){ return num * 3; });
    =&gt; [3, 6, 9]

is there a way to make it preserve the keys? ie, I want a function that returns

    {one: 3, two: 6, three: 9}

Map over object preserving keys

I have this array. How do I use underscore &#39;_.sortBy&#39; to sort it according to start date?

     
    [
        { 
            id: &#39;oljw832021kjnb389xzll323jk&#39;,
            start: { dateTime: &#39;2013-09-26T13:30:00-07:00&#39; },
            end: { dateTime: &#39;2013-09-26T14:30:00-07:00&#39; },
        },
        { 
            id: &#39;ed7l5tmckdp0lm90nvr4is3d4c&#39;,
            start: { dateTime: &#39;2013-09-26T15:30:00-07:00&#39; },
            end: { dateTime: &#39;2013-09-26T16:30:00-07:00&#39; },
        },
        { 
            id: &#39;etmasdsackdp0kjl0nvrkopioqw&#39;,
            start: { dateTime: &#39;2013-09-26T18:00:00-07:00&#39; },
            end: { dateTime: &#39;2013-09-26T19:00:00-07:00&#39; },
        }
    ]


Array with object sorting with Underscore sortBy

What&#39;s the correct way to merge two arrays in Javascript?

I&#39;ve got two arrays (for example):

    var a1 = [{ id : 1, name : &quot;test&quot;}, { id : 2, name : &quot;test2&quot;}]
    var a2 = [{ id : 1, count : &quot;1&quot;}, {id : 2, count : &quot;2&quot;}]

I want to be able to end up with something like:

    var a3 = [{ id : 1, name : &quot;test&quot;, count : &quot;1&quot;}, 
              { id : 2, name : &quot;test2&quot;, count : &quot;2&quot;}]

Where the two arrays are being joined based on the &#39;id&#39; field and extra data is simply being added. 

I tried to use `_.union` to do this, but it simply overwrites the values from the second array into the first one

JavaScript merging objects by id

I&#39;m using jquery, backbonejs, underscorejs and bootstrap for my company project. Sometimes I got this error in chrome. 

&gt; Uncaught TypeError: Cannot read property &#39;fn&#39; of undefined

My shim is like this in my main.js

    require.config({
    paths: {
        jquery: &#39;libs/jquery/jquery&#39;,
        underscore: &#39;libs/underscore/underscore&#39;,
        backbone: &#39;libs/backbone/backbone&#39;,
        backboneeventbinder: &#39;libs/backbone.eventbinder.min&#39;,
        bootstrap: &#39;libs/bootstrap&#39;,
        jquerytablesorter: &#39;libs/tablesorter/jquery.tablesorter&#39;,
        tablesorter: &#39;libs/tablesorter/tables&#39;,
        ajaxupload: &#39;libs/ajax-upload&#39;,
        templates: &#39;../templates&#39;
    },
    shim: {
        &#39;backbone&#39;: {
            deps: [&#39;underscore&#39;, &#39;jquery&#39;],
            exports: &#39;Backbone&#39;
        },
        &#39;underscore&#39;: {
            exports: &#39;_&#39;
        },
    }
    });
     require([&#39;app&#39;, ], function(App) {
      App.initialize();
    });

I already insert .noConflict() for jquery, underscorejs and backbonejs.

My app.js

    // Filename: app.js
    define([&#39;jquery&#39;, &#39;underscore&#39;, &#39;backbone&#39;, &#39;backboneeventbinder&#39;, &#39;bootstrap&#39;, &#39;ajaxupload&#39;, &#39;router&#39;, // Request router.js
    ], function($, _, Backbone, Bootstrap, Backboneeventbinder, Ajaxupload, Router) {
        $.noConflict();
        _.noConflict();
        Backbone.noConflict();
        var initialize = function() {
                Router.initialize();
            };
        return {
            initialize: initialize
        };
    });

This is screenshot from my chrome
![enter image description here][1]

Its kind like related to bootstrap.

Thanks a lot in advance.


  [1]: http://i.stack.imgur.com/dVvat.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Robert Oschler	View Question on Stackoverflow
Solution 1 - Javascript	RoryKoehein	View Answer on Stackoverflow

Missing Javascript ".map" file for Underscore.js when loading ASP.NET web page

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Modify HTTP responses from a Chrome extension

how to reset develop branch to master

Attributions