Like many people these days I have been trying the different features that C++11 brings. One of my favorites is the &quot;range-based for loops&quot;.

I understand that:

    for(Type&amp; v : a) { ... }

Is equivalent to:

    for(auto iv = begin(a); iv != end(a); ++iv)
    {
      Type&amp; v = *iv;
      ...
    }

And that `begin()` simply returns `a.begin()` for standard containers.

But what if I want to *make my custom type &quot;range-based for loop&quot;-aware*?

Should I just specialize `begin()` and `end()`?

If my custom type belongs to the namespace `xml`, should I define `xml::begin()` or `std::begin()` ?

In short, what are the guidelines to do that?


How to make my custom type to work with &quot;range-based for loops&quot;?

I have always found startup profile files of other people both useful and instructive about the language. Moreover, while I have some customization for [Bash][1] and [Vim][2], I have nothing for R.

For example, one thing I always wanted is different colors for input and output text in a window terminal, and maybe even syntax highlighting.

  [1]: https://en.wikipedia.org/wiki/Bash_%28Unix_shell%29
  [2]: https://en.wikipedia.org/wiki/Vim_%28text_editor%29




Expert R users, what&#39;s in your .Rprofile?

**Is there a way that I can configure Visual Studio 2008 to understand CamelCase?**  Specifically, I&#39;d like to be able to get `Ctrl + right` or `left` cursor to take me to a subsection of a variable or type name.

i.e., if my cursor was at the start of this line:

&lt;!-- language: c# --&gt;

    LongNamedExampleClass longNamed = new LongNamedExampleClass();

and I hit `Ctrl + right`, I&#39;d like to jump to &quot;`Named`&quot; in the class name, rather than the start of the variable name.  If I hit it again, I&#39;d like to go to &quot;`Example`&quot;.  I hope that makes sense.

I used this navigational feature in Eclipse quite a lot, and find it difficult to unlearn something so ingrained.

Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys

I tried looking for the .emacs file for my Windows installation for Emacs, but I could not find it. Does it have the same filename under Windows as in Unix?

Do I have to create it myself? If so, under what specific directory does it go?


Where can I find my .emacs file for Emacs running on Windows?

I am fairly new to Emacs and I have been trying to figure out how to change the default folder for &lt;kbd&gt;C-x C-f&lt;/kbd&gt; on start-up. For instance when I first load Emacs and hit &lt;kbd&gt;C-x C-f&lt;/kbd&gt; its default folder is `C:\emacs\emacs-21.3\bin`, but I would rather it be the desktop. I believe there is some way to customize the `.emacs` file to do this, but I am still unsure what that is.

Update: There are three solutions to the problem that I found to work, however I believe solution 3 is Windows only.

  - Solution 1: Add `(cd &quot;C:/Users/Name/Desktop&quot;)` to the `.emacs` file

  - Solution 2: Add `(setq default-directory &quot;C:/Documents and Settings/USER_NAME/Desktop/&quot;)` to the `.emacs` file

  - Solution 3: Right click the Emacs short cut, hit properties and change the start in field to the desired directory.

Changing the default folder in Emacs

How do I change the font size used in Solution Explorer? The default font size is too small for me.

How do I change the font size of Solution Explorer (in Visual Studio)

I have an application that extends JavaScript via JavaScriptCore, in a webkit-gtk browser. Right now I have several classes that I add to the global context like so:

    void create_js(gpointer context, char* className, JSClassDefinition clasDefinition) {
        JSClassRef classDef = JSClassCreate(&amp;clasDefinition);
        JSObjectRef classObj = JSObjectMake(context, classDef, context);
        JSObjectRef globalObj = JSContextGetGlobalObject(context);
        JSStringRef str = JSStringCreateWithUTF8CString(className);
        JSObjectSetProperty(context, globalObj, str, classObj, kJSPropertyAttributeNone, NULL);
        JSStringRelease(str);
    }

Now, I&#39;d like to also add those classes to the WebWorker&#39;s context, so I can call them from workers instantiated in JS.

I&#39;ve tried getting the `Worker` object like so:

    JSStringRef workerStr = JSStringCreateWithUTF8CString(&quot;Worker&quot;);
    JSObjectRef worker = JSObjectGetProperty(context, globalObj, workerStr, NULL);
    JSObjectSetProperty(context, worker, str, classObj, kJSPropertyAttributeNone, NULL);
    JSStringRelease(workerStr);

But that adds it to the `WorkerConstructor` object, and when a `new Worker()` is called, the classes are not available.

How to Add a new native class to WebWorker&#39;s context in JavaScriptCore?

From http://items.sjbach.com/319/configuring-vim-right I got that you were supposed to be able to use &lt;kbd&gt;Space&lt;/kbd&gt; as the mapleader in vim. I&#39;ve tried but it does not seem to work. Anyone who have made it work? 

Tried:

    let mapleader = &lt;space&gt;



Can I use SPACE as mapleader in VIM?

I strain to read the tabs in the source code editor of Visual Studio 2012. 
I don&#39;t even understand what the different colors mean? They seem totally random. Black on brown or black on blue.... who choose that?  

![enter image description here][1]

So I would like to turn off the colouring for the tabs and revert to black on white, or a light grey.

I&#39;ve looked in:

&gt; Options&gt;&gt; Environment (General / Font and Colors)

but I cant see anything relevant. So how can I do this please?


  [1]: http://i.stack.imgur.com/iXHMt.png

VS2012 How to turn off editor tab colouring?

I am developing a REST interface for my app using Jackson to serialize my POJO domain objects to JSON representation. I want to customize the serialization for some types to add additional properties to the JSON representation that do not exist in POJOs (e.g. add some metadata, reference data, etc). I know how to write my own `JsonSerializer`, but in that case I would need to explicitly call `JsonGenerator.writeXXX(..)` methods for __each__ property of my object while all I need is just to __add__ an additional property. In other words I would like to be able to write something like:

    @Override
    public void serialize(TaxonomyNode value, JsonGenerator jgen, SerializerProvider provider) {
        jgen.writeStartObject();
        jgen.writeAllFields(value); // &lt;-- The method I&#39;d like to have
        jgen.writeObjectField(&quot;my_extra_field&quot;, &quot;some data&quot;);
        jgen.writeEndObject();
    }

or (even better) to somehow intercept the serialization before the `jgen.writeEndObject()` call, e.g.:

    @Override void beforeEndObject(....) {
        jgen.writeObjectField(&quot;my_extra_field&quot;, &quot;some data&quot;);
    }

I thought I could extend `BeanSerializer` and override its `serialize(..)` method but it&#39;s declared `final` and also I couldn&#39;t find an easy way to create a new instance of `BeanSerializer` without providing it with all the type metadata details practically duplicating a good portion of Jackson. So I&#39;ve given up on doing that.

__My question is__ - how to customize Jackson&#39;s serialization to add additional stuff to the JSON output for particular POJOs without introducing too much of the boilerplate code and reusing as much as possible of the default Jackson behaviour.

Jackson: How to add custom property to the JSON without modifying the POJO

is it possible to create a toggle button in Android that has an image but no text?
Ideally it would look like this:

![Toggle Button With Image][1]

Ive seen similar posts where the answer was to change the background but i want to preserve the Holo Light layout and just swap the text with an image.

I need to be able to programaticallly change the image source,

Any ideas how i would make this?

If this cant be done, is there a way i can make a normal button toggle on and off?

  [1]: http://i.stack.imgur.com/xidRQ.png



Android: Create a toggle button with image and no text

I need to add padding or margin to some of Material-UI components, but could not find an easy way to do it. Can I add these properties **to all components**? something like this:

    &lt;Button color=&quot;default&quot; padding={10} margin={5}&gt;

I know that this is possible using pure CSS and classes but I want to do it the Material-UI way.

How to add padding and margin to all Material-UI components?

I have been investigating for the whole day as I considered it would be worthwhile spending some time to learn best practice for customizing [Bootstrap](http://twitter.github.io/bootstrap/).


I can see that there is a friendly page available for customizing elements selectively from http://twitter.github.io/bootstrap/customize.html but I want to have more control than this without touching original bootstrap source files.


To start with, I basically wanted to test out changing the grid from 12 to 16 columns and to do this, I created my own variable less file and added @gridColumns:16; only to this file and imported this custom less inside bootstrap.less as follows. 


    // Core variables and mixins
    @import &quot;variables.less&quot;; // Modify this for custom colors, font-sizes, etc
    @import &quot;mixins.less&quot;;
    **@import &quot;../custom-variables.less&quot;; //Override variables**



Then, using [WinLess](http://winless.org/) I compiled the bootstrap.less file to get new bootstrap.css with overridden variable import call and linked the css with html file but the grid won&#39;t change to 16 columns.


Can anyone please point out what I am doing wrong?


Bootstrap variable overriding with LESS

I know how to remove/change `UISearchBar` background color around search field:

    [[self.searchBar.subviews objectAtIndex:0] removeFromSuperview];
    self.searchBar.backgroundColor = [UIColor grayColor];

![achieved UISearchBar customization][2]

But don&#39;t know how to do this inside it like that:

![desired UISearchBar customization][1]


  [1]: http://i.stack.imgur.com/mQbUj.png
  [2]: http://i.stack.imgur.com/TlLAH.png

This needs to be compatible with iOS 4.3+.



How to change inside background color of UISearchBar component on iOS

Having spent a number of years working primarily with MS SQL Server (and hence SQL Server Management Studio for common tasks), I am now beginning to work with MySql. To date I have been using &lt;em&gt;MySQL Workbench&lt;/em&gt; and am generally happy with it.

I would, however, like to be able to assign &lt;strong&gt;custom keyboard shortcuts&lt;/strong&gt; for certain commands (e.g. commands from &lt;a href=&quot;http://dev.mysql.com/doc/workbench/en/wb-keys.html&quot;&gt;this list&lt;/a&gt;). For example, I&#39;d prefer to stick to the MS-SQL approach of &#39;F5&#39; to execute queries, rather than hitting &#39;Modifier+Return&#39;. I haven&#39;t yet come across a simple way to do this. My questions are then:
&lt;ul&gt;
&lt;li&gt;Is this possible somehow in MySQL Workbench (e.g. additional plugin)?&lt;/li&gt;
&lt;li&gt;If not, do any of the alternatives to MySQL Workbench offer this functionality?&lt;/li&gt;
&lt;/ul&gt;

Environment:
&lt;ul&gt;
&lt;li&gt;Ubuntu 12.04 LTS, 32 bit&lt;/li&gt;
&lt;li&gt;MySQL server version 5.5.24-0ubuntu0.12.04.1&lt;/li&gt;
&lt;li&gt;MySQL Workbench Version 5.2.38, rev 8753&lt;/li&gt;
&lt;/ul&gt;

Cheers!

Customizing Keyboard Shortcuts in MySql Workbench

I&#39;ve been trying to customize the toggle button look but with no success.
Here is how I want it to look like:

![enter image description here][1]


  [1]: http://i.stack.imgur.com/0k0xG.png

Can someone give me a tutorial? 

Android toggle button custom look

I need to integrate a new payment gateway to our corporate website, which is based on Social Engine. There is an extension for this `CMS` called Advanced Payment Gateways which allows integration of new gateways. In fact, it gets your gateway name and generates a skeleton structure zipped as a file so you can unzip and upload to your server and thus merge with the application directory. 

I&#39;m going to explain how I implement my gateway without Social Engine, and I hope someone can tell me how I can incorporate that into Social Engine.     

 1. First I connect to my `PSP` service: 

        $client = new nusoap_client(&#39;https://example.com/pgwchannel/services/pgw?wsdl&#39;);

 2. I prepare the following parameters in an array to send to `bpPayRequest`: 

    	$parameters = array(
    		&#39;terminalId&#39; =&gt; $terminalId,
    		&#39;userName&#39; =&gt; $userName,
    		&#39;userPassword&#39; =&gt; $userPassword,
    		&#39;orderId&#39; =&gt; $orderId,
    		&#39;amount&#39; =&gt; $amount,
    		&#39;localDate&#39; =&gt; $localDate,
    		&#39;localTime&#39; =&gt; $localTime,
    		&#39;additionalData&#39; =&gt; $additionalData,
    		&#39;callBackUrl&#39; =&gt; $callBackUrl,
    		&#39;payerId&#39; =&gt; $payerId);
    
    	// Call the SOAP method
    	$result = $client-&gt;call(&#39;bpPayRequest&#39;, $parameters, $namespace);

 3. If payment request is accepted, the result is a comma separated string, with the first element being **0**.   
Then we can send the second element (reference id) to payment
    gateway as follows via `POST` method:

    
        echo &quot;&lt;script language=&#39;javascript&#39; type=&#39;text/javascript&#39;&gt;postRefId(&#39;&quot; . $res[1] . &quot;&#39;);&lt;/script&gt;&quot;;
    
    	&lt;script language=&quot;javascript&quot; type=&quot;text/javascript&quot;&gt;    
    		function postRefId (refIdValue) {
    			var form = document.createElement(&quot;form&quot;);
    			form.setAttribute(&quot;method&quot;, &quot;POST&quot;);
    			form.setAttribute(&quot;action&quot;, &quot;https://example.com/pgwchannel/startpay&quot;);         
    			form.setAttribute(&quot;target&quot;, &quot;_self&quot;);
    			var hiddenField = document.createElement(&quot;input&quot;);              
    			hiddenField.setAttribute(&quot;name&quot;, &quot;RefId&quot;);
    			hiddenField.setAttribute(&quot;value&quot;, refIdValue);
    			form.appendChild(hiddenField);
    
    			document.body.appendChild(form);         
    			form.submit();
    			document.body.removeChild(form);
    		}
    		&lt;/script&gt;

 4. The gateway will return the following parameters via `POST` method to the call back `URL` that we provided in payment request:  
`RefId` (reference id as produced in previous steps)  
`ResCode` (Result of payment: 0 denotes success)  
`saleOrderId` (order id as passed during payment request)  
`SaleReferenceId` (sale reference code is given by PSP to the merchant)  

 5. If `ResCode` in the previous step was **0**, then we&#39;d need to pass the call `bpVerifyRequest` with the following parameters to verify payment, otherwise the payment will be canceled.    

         $parameters = array(
    		&#39;terminalId&#39; =&gt; $terminalId,
    		&#39;userName&#39; =&gt; $userName,
    		&#39;userPassword&#39; =&gt; $userPassword,
    		&#39;orderId&#39; =&gt; $orderId,
    		&#39;saleOrderId&#39; =&gt; $verifySaleOrderId,
    		&#39;saleReferenceId&#39; =&gt; $verifySaleReferenceId);
    
    	// Call the SOAP method
    	$result = $client-&gt;call(&#39;bpVerifyRequest&#39;, $parameters, $namespace);

 6. In case the result of `bpVerifyRequest` is zero, payment is certain and the merchant has to provide goods or services purchased. However, there is an optional method `bpSettleRequest`, which is used to request a settlement. It is called as follows:   
```
	$parameters = array(
		&#39;terminalId&#39; =&gt; $terminalId,
		&#39;userName&#39; =&gt; $userName,
		&#39;userPassword&#39; =&gt; $userPassword,
		&#39;orderId&#39; =&gt; $orderId,
		&#39;saleOrderId&#39; =&gt; $settleSaleOrderId,
		&#39;saleReferenceId&#39; =&gt; $settleSaleReferenceId);

	// Call the SOAP method
	$result = $client-&gt;call(&#39;bpSettleRequest&#39;, $parameters, $namespace);
```

I get confused by looking at default gateways in the Payment Gateways plugin e.g. PayPal, Stripe, 2Checkout, etc.  How am I incorporate this code logic into the newly created gateway skeleton? (the structure is shown below):  
[![enter image description here][1]][1]

You can check out the complete source code here:  
[default.php](https://gist.github.com/anonymous/02dcf681b3cd0852a18fb7723e34447f)    
[callback.php](https://gist.github.com/anonymous/19a5b759f767cef6cd40158b9a3f0577)



  [1]: https://i.stack.imgur.com/PZyCe.png


How to add a custom payment gateway to Social Engine

I want to create a customized ListView (or similar) which will behave like a closed (circular) one:

   1. scrolling down - after the last item was reached the first begins  (.., n-1, n, 1, 2, ..)
   2. scrolling upward - after the first item was reached the last begins (.., 2, 1, n, n-1, ..)

It sounds simple conceptually but, apparently, there is no straightforward approach to do this.
Can anyone point me to the right solution ?
Thank you !

I have already received an answer (from Streets Of Boston on Android-Developers google groups), but it sounds somehow ugly :) - 

&gt; I did this by creating my own
&gt; list-adapter (subclassed from
&gt; BaseAdapter).
&gt; 
&gt; I coded my own list-adapter in such a
&gt; way that its getCount() method returns
&gt; a HUUUUGE number.
&gt; 
&gt; And if item &#39;x&#39; is selected, then this
&gt; item corresponds to adapter
&gt; position=&#39;adapter.getCount()/2+x&#39;
&gt; 
&gt; And for my adapter&#39;s method
&gt; getItem(int position), i look in my
&gt; array that backs up the adapter and
&gt; fetch the item on index:
&gt;     (position-getCount()/2) % myDataItems.length
&gt; 
&gt; You need to do some more &#39;special&#39;
&gt; stuff to make it all work correctly,
&gt; but you get the idea.
&gt; 
&gt; In principle, it is still possible to
&gt; reach the end or the beginning of the
&gt; list, but if you set getCount() to
&gt; around a million or so, this is hard
&gt; to do :-)

How to create a closed (circular) ListView?

I can&#39;t believe that neither a Google or SO search has turned up a definitive answer or even much discussion for this, but:

Is it possible to edit/customize keyboard shortcuts in the Google Chrome JavaScript debugger?  if so, how?

I&#39;m used to Eclipse&#39;s &lt;kbd&gt;F5&lt;/kbd&gt;/&lt;kbd&gt;F6&lt;/kbd&gt;/&lt;kbd&gt;F7&lt;/kbd&gt;/&lt;kbd&gt;F8&lt;/kbd&gt; debugger step into/over/out of/resume keys, and want the same bindings in Google Chrome.  &lt;kbd&gt;F10&lt;/kbd&gt;/&lt;kbd&gt;F11&lt;/kbd&gt; are default Expose keys for OSX and therefore not ideal for debugger control.

I&#39;m open to unorthodox solutions, e.g. Quicksilver/AppleScript.

Related, but not-quite-helpful, pages:

* https://stackoverflow.com/questions/1437412/
* [Chrome Keyboard Shortcuts Documentation](http://code.google.com/chrome/devtools/docs/shortcuts.html)

customize chrome developer tool javascript debugger keyboard shortcuts?

I&#39;m trying to show some data using a doughnut chart from Chart.js2.

My current chart looks like this:  
[![current chart][1]][1]

My desired output must show another attribute, which is the percentage, and looks like this:  
[![desired chart with percentage][2]][2]

I&#39;ve read the documentation, but I can&#39;t cope with this because it&#39;s very general and I&#39;m new to JavaScript.

My code for the first chart is the following:

    const renderCashCurrencyPie = (cashAnalysisBalances) =&gt; {
      if (cashAnalysisBalances) {
        const currenciesName = cashAnalysisBalances
        .map(curName =&gt; curName.currency);
    
        const availableCash = cashAnalysisBalances
        .map(avCash =&gt; avCash.availableCash);
    
        let currenciesCounter = 0;
        for (let i = 0; i &lt; currenciesName.length; i += 1) {
          if (currenciesName[i] !== currenciesName[i + 1]) {
            currenciesCounter += 1;
          }
        }
    
        const currenciesData = {
          labels: currenciesName,
          datasets: [{
            data: availableCash,
            backgroundColor: [
              &#39;#129CFF&#39;,
              &#39;#0C6DB3&#39;,
              &#39;#FF6384&#39;,
              &#39;#00FFFF&#39;
            ],
            hoverBackgroundColor: [
              &#39;#FF6384&#39;,
              &#39;#36A2EB&#39;,
              &#39;#FFCE56&#39;,
              &#39;#00FFFF&#39;
            ]
          }]
        };

[1]: https://i.stack.imgur.com/0VHP3.png
[2]: https://i.stack.imgur.com/aM5mq.png

How to customize the tooltip of a Chart.js 2.0 Doughnut Chart?

I did some digging in Android code, and saw the use of &lt;animated-rotate&gt; in the indeterminate progress bar. after trying to create my own drawable with this tag:

    &lt;animated-rotate xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:drawable=&quot;@drawable/spinner_pia&quot;
        android:pivotX=&quot;50%&quot;
        android:pivotY=&quot;50%&quot;
        android:framesCount=&quot;12&quot;
        android:frameDuration=&quot;100&quot; /&gt;

I get an error:
&quot;No resource identifier found for attribute &#39;frameDuration&#39; in package &#39;android&#39;&quot; - which means that frameDuration is a private attribute. 
Is there a way to use this &quot;animate-rotate&quot; feature?

My task is to replace the system&#39;s default indeterminate progress bar. I&#39;d like to do it with as little code as possible (just change few attributes if possible).
Using the ProgressBar view, setting:

    android:indeterminateOnly=&quot;true&quot;
    android:indeterminateBehavior=&quot;cycle&quot;
    android:indeterminateDuration=&quot;3500&quot;
    android:indeterminateDrawable=&quot;@drawable/pia_sivuvator&quot;

and point &quot;@drawable/pia_sivuvator&quot; to that &lt;animate-rotate&gt; object would&#39;ve make my task as elegant as they come but I&#39;m stuck on those private attributes.

help?


Android Animate Rotate

I created a ViewModel(`UserModel`) that implement `IUser&lt;int&gt;` (for customizing ASP.NET Identity 2.0)&lt;br /&gt;

    public class UserModel : IUser&lt;int&gt;
    {
        public int Id { get; set; }
    
        public string SecurityStamp { get; set; }
    
        [Display(Name = &quot;Name&quot;)]
        public string FirstName { get; set; }
    
        [Display(Name = &quot;Last Name&quot;)]
        public string LastName { get; set; }
    
        public string FullName { get; set; }
    
        [Display(Name = &quot;Username&quot;)]
        public string UserName { get; set; }
    
        [DataType(DataType.Password)]
        [Display(Name = &quot;Password&quot;)]
        public string Password { get; set; }
    
        [Display(Name = &quot;E-Mail&quot;)]
        public string Email { get; set; }
    
        [Display(Name = &quot;Photo&quot;)]
        public string PhotoPath { get; set; }
    
        public List&lt;Claim&gt; Claims { get; set; }
    
        [IgnoreMapping]
        public List&lt;CommentModel&gt; Comments { get; set; }
    }

Everything is well, but `GenerateUserIdentityAsync` method.&lt;br /&gt;
The following code is my `GenerateUserIdentityAsync` in UserModel:

    public async Task&lt;ClaimsIdentity&gt; GenerateUserIdentityAsync(UserManager&lt;UserModel, int&gt; manager)
    {
        this.SecurityStamp = Guid.NewGuid().ToString();
        this.Claims = new List&lt;Claim&gt;();
        
        ClaimsIdentity userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);//Exception : Value cannot be null. Parameter name: value
    
        return userIdentity;
    }

An exception has occurred in `CreateIdentityAsync` method with the following stack trace

    ArgumentNullException: Value cannot be null.
    Parameter name: value]
       System.Security.Claims.Claim..ctor(String type, String value, String valueType, String issuer, String originalIssuer, ClaimsIdentity subject, String propertyKey, String propertyValue) +10798181
       System.Security.Claims.Claim..ctor(String type, String value) +34
       Microsoft.AspNet.Identity.&lt;CreateAsync&gt;d__0.MoveNext() +1458
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
       System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
       Smartiz.UI.Models.&lt;GenerateUserIdentityAsync&gt;d__2.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Models\UserModels.cs:215
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
       System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +24
       Smartiz.UI.Controllers.&lt;SignInAsync&gt;d__58.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Controllers\AccountController.cs:448
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
       System.Runtime.CompilerServices.TaskAwaiter.GetResult() +21
       Smartiz.UI.Controllers.&lt;ExternalLoginCallback&gt;d__3c.MoveNext() in e:\Works\Smartiz\Smartiz.UI\Controllers\AccountController.cs:315
       System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
       System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
       System.Runtime.CompilerServices.TaskAwaiter.GetResult() +21
       System.Threading.Tasks.TaskHelpersExtensions.ThrowIfFaulted(Task task) +61
       System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +114
       System.Web.Mvc.Async.&lt;&gt;c__DisplayClass37.&lt;BeginInvokeAsynchronousActionMethod&gt;b__36(IAsyncResult asyncResult) +66
       System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
       System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
       System.Web.Mvc.Async.AsyncInvocationWithFilters.&lt;InvokeActionMethodFilterAsynchronouslyRecursive&gt;b__3d() +117
       System.Web.Mvc.Async.&lt;&gt;c__DisplayClass46.&lt;InvokeActionMethodFilterAsynchronouslyRecursive&gt;b__3f() +323
       System.Web.Mvc.Async.&lt;&gt;c__DisplayClass33.&lt;BeginInvokeActionMethodWithFilters&gt;b__32(IAsyncResult asyncResult) +44
       System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +47
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +136
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
       System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
       System.Web.Mvc.Async.&lt;&gt;c__DisplayClass2b.&lt;BeginInvokeAction&gt;b__1c() +72
       System.Web.Mvc.Async.&lt;&gt;c__DisplayClass21.&lt;BeginInvokeAction&gt;b__1e(IAsyncResult asyncResult) +185
       System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +42
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +133
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
       System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
       System.Web.Mvc.Controller.&lt;BeginExecuteCore&gt;b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +34
       System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
       System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
       System.Web.Mvc.Controller.&lt;BeginExecute&gt;b__15(IAsyncResult asyncResult, Controller controller) +39
       System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +62
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
       System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
       System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
       System.Web.Mvc.MvcHandler.&lt;BeginProcessRequest&gt;b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +39
       System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +70
       System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +139
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
       System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
       System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40
       System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
       System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9651188
       System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +155

Could you please guide me where my wrong is ?

Value cannot be null. Parameter name: value, CreateIdentityAsync?

I have an `NSTableView` with several text columns. By default, the `dataCell` for these columns is an instance of Apple&#39;s `NSTextFieldCell` class, which does all kinds of wonderful things, but it draws text aligned with the top of the cell, and I want the text to be vertically centered in the cell.

There is an internal flag in `NSTextFieldCell` that can be used to vertically center the text, and it works beautifully. However, since it is an internal flag, its use is not sanctioned by Apple and it could simply disappear without warning in a future release. I am currently using this internal flag because it is simple and effective. Apple has obviously spent some time implementing the feature, so I dislike the idea of re-implementing it.

So; my question is this: **What is the right way to implement something that behaves exactly like Apple&#39;s NStextFieldCell, but draws vertically centered text instead of top-aligned?**

For the record, here is my current &quot;solution&quot;:

    @interface NSTextFieldCell (MyCategories)
    - (void)setVerticalCentering:(BOOL)centerVertical;
    @end
    
    @implementation NSTextFieldCell (MyCategories)
    - (void)setVerticalCentering:(BOOL)centerVertical
    {
    	@try { _cFlags.vCentered = centerVertical ? 1 : 0; }
    	@catch(...) { NSLog(@&quot;*** unable to set vertical centering&quot;); }
    }
    @end

Used as follows:

    [[myTableColumn dataCell] setVerticalCentering:YES];

Is there a &quot;right&quot; way to have NSTextFieldCell draw vertically centered text?

How do we use a layer-list as a drawable for a button.
I have a button:
    &lt;selector xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;

	
	&lt;item android:state_pressed=&quot;true&quot;&gt;
		&lt;shape&gt;
			&lt;gradient android:endColor=&quot;@color/white&quot;
				android:startColor=&quot;@color/grey_blue_light&quot; android:angle=&quot;90&quot; /&gt;
			&lt;stroke android:width=&quot;1dp&quot; android:color=&quot;@color/aqua_blue&quot; /&gt;
			&lt;corners android:radius=&quot;3dp&quot; /&gt;
			&lt;padding android:left=&quot;10dp&quot; android:top=&quot;10dp&quot;
				android:right=&quot;10dp&quot; android:bottom=&quot;10dp&quot; /&gt;
		&lt;/shape&gt;
	&lt;/item&gt;


	&lt;item android:state_focused=&quot;true&quot;&gt;
		
	&lt;/item&gt;
	&lt;item&gt;
		
	&lt;/item&gt;
&lt;/selector&gt;

Now I need a layer-list to be used as a shape when say button state is pressed:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
    &lt;layer-list xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;&gt;
    &lt;item&gt;
        &lt;shape android:shape=&quot;oval&quot;&gt;
            &lt;solid android:color=&quot;@color/aqua_blue&quot; /&gt;
        &lt;/shape&gt;
    &lt;/item&gt;
    &lt;item android:top=&quot;1dp&quot; android:left=&quot;1dp&quot; android:right=&quot;1dp&quot; android:bottom=&quot;1dp&quot;&gt;
        &lt;shape android:shape=&quot;oval&quot;&gt;
            &lt;solid android:color=&quot;@color/aqua_blue&quot; /&gt;
        &lt;/shape&gt;
    &lt;/item&gt;
&lt;/layer-list&gt;

How do we use this layer list in the button selector?

Android Using layer-list for button selector

Is it possible to have **part** of the text of a legend in a particular style, let&#39;s say, **bold** or _italic_?

Styling part of label in legend in matplotlib

What would be the easiest way to create a C compiler for a custom CPU, assuming of course I already have an assembler for it?

Since a C compiler generates assembly, is there some way to just define standard bits and pieces of assembly code for the various C idioms, rebuild the compiler, and thereby obtain a cross compiler for the target hardware?

Preferably the compiler itself would be written in C, and build as a native executable for either Linux or Windows.


**Please note:** I am _not_ asking how to write the compiler itself. I did take that course in college, I know about general compiler-compilers, etc. In this situation, I&#39;d just like to configure some existing framework if at all possible. I don&#39;t want to modify the language, I just want to be able to target an arbitrary architecture. If the answer turns out to be &quot;it doesn&#39;t work that way&quot;, *that* information will be useful to myself and anyone else who might make similar assumptions.

All Customization Solutions on Gang of Coders

Total of 26 Customization Solutions

How to make my custom type to work with "range-based for loops"?

Expert R users, what's in your .Rprofile?