I think a good way could be to use `ng-attr-` followed by the expression you want to evaluate. 
In your case it would be something like:

    &lt;span ng-attr-data-toggle=&quot;{{ isValueTrue ? &#39;toggle&#39; : &#39;notToggle&#39; }}&quot;&gt;&lt;/span&gt;

Here&#39;s a &lt;kbd&gt;[fiddle](http://jsfiddle.net/gleezer/sCC72/2/)&lt;/kbd&gt; with an example.



`&lt;span ng-attr-data-toggle=&quot;{{isTrue &amp;&amp; &#39;dropdown&#39; || undefined }}&quot;&gt;&lt;/span&gt;`

will produce when isTrue=true : 
`&lt;span data-toggle=&quot;dropdown&quot;&gt;&lt;/span&gt;`

and when isTrue=false : 
`&lt;span&gt;&lt;/span&gt;`

At the moment, there is no angular directive that allows you to remove or add an attribute conditionally. You can do ng-switch around the span, one with that attr and another one without it.

    &lt;div ng-switch on=&quot;condition&quot;&gt;
    &lt;span data-toggle=&quot;dropdown&quot; ng-switch-when=&quot;value&quot;&gt;&lt;/span&gt;
    &lt;span ng-switch-default&gt;&lt;/span&gt;
    &lt;/div&gt;

or

    &lt;span data-toggle=&quot;dropdown&quot; ng-if=&quot;expression&quot;&gt;&lt;/span&gt;
    &lt;span ng-if=&quot;!expression&quot;&gt;&lt;/span&gt;

You can also create a directive for that same purpose (adding/removing attrs conditionally) but that would be a bit more complicated.

Additionally if what you want is manage the scope variable inside the directive you can pass it as another attribute.

Example:

    &lt;span data-toggle=&quot;dropdown&quot; when=&quot;isDropDown&quot;&gt;&lt;/span&gt;

My question is that

I have a size_t data, but now I want to convert it to double or int.

If I do something like 

     size_t data = 99999999;
     int convertdata = data;

the compiler will report warning. because it maybe overflow.

Do you have some method like the boost or some other method to do the convert?


How to cast the size_t to double or int C++

creating a hashmap from a json string in java?

I have json string like `{&quot;phonetype&quot;:&quot;N95&quot;,&quot;cat&quot;:&quot;WP&quot;}` and want to convert into a standard Hashmap.
                           
How can i do it?

creating Hashmap from a JSON String

I&#39;m working on the template for a directive. If a property in the scope is set to true, `data-toggle=&quot;dropdown&quot;` should be appended to the element. If the variable is false, this data attribute should not render as an attribute of the element.

For example, if scope variable is true, the template should render:

    &lt;span data-toggle=&quot;dropdown&quot;&gt;&lt;/span&gt;

If false, the template should render:

    &lt;span&gt;&lt;/span&gt;

What would the template look like to accomplish this? 

----
For example, I know that I can use `ng-class` to conditionally include a class. If I want the template to render this:

    &lt;span class=&quot;dropdown&quot;&gt;&lt;/span&gt;

Then my template would look like this:

    &quot;&lt;span ng-class=&quot;{ &#39;dropdown&#39;: isDropDown }&quot;&gt;&lt;/span&gt;

If scope variable `isDropDown` is `false`, then the template will simply render:

    &lt;span&gt;&lt;/span&gt;

So there&#39;s a way in a template to conditionally add a `class=&quot;dropdown&quot;`. Is there a syntax for templates that allows me to conditionally add `data-toggle=&quot;dropdown&quot;`?

---
One of the things I&#39;ve tried for the template is:

    &quot;&lt;span data-toggle=&quot;{ &#39;dropdown&#39;: isDropDown }&quot;&gt;&lt;/span&gt;

My thinking with the above template is that if the scope variable `isDropDown` is true, the value of `data-toggle` will be set to &quot;dropdown&quot;. If `isDropDown` is false, then the value of `data-toggle` would simply be an empty string `&quot;&quot;`. That doesn&#39;t seem to work though.

Conditionally adding data-attribute in Angular directive template

I'm working on the template for a directive. If a property in the scope is set to true, <code>data-toggle="dropdown"</code> should be appended to the element. If the variable is false, this data attribute should not render as an attribute of the element.
For example, if scope variable is true, the template should render:
<pre><code class="hljs language-ini">&#x3C;span data-toggle="dropdown">&#x3C;/span>
</code></pre>
If false, the template should render:
<pre><code class="hljs language-css">&#x3C;span>&#x3C;/span>
</code></pre>
What would the template look like to accomplish this?
<hr>
For example, I know that I can use <code>ng-class</code> to conditionally include a class. If I want the template to render this:
<pre><code class="hljs language-ini">&#x3C;span class="dropdown">&#x3C;/span>
</code></pre>
Then my template would look like this:
<pre><code class="hljs language-css">"&#x3C;span ng-class="{ 'dropdown': isDropDown }">&#x3C;/span>
</code></pre>
If scope variable <code>isDropDown</code> is <code>false</code>, then the template will simply render:
<pre><code class="hljs language-css">&#x3C;span>&#x3C;/span>
</code></pre>
So there's a way in a template to conditionally add a <code>class="dropdown"</code>. Is there a syntax for templates that allows me to conditionally add <code>data-toggle="dropdown"</code>?
<hr>
One of the things I've tried for the template is:
<pre><code class="hljs language-css">"&#x3C;span data-toggle="{ 'dropdown': isDropDown }">&#x3C;/span>
</code></pre>
My thinking with the above template is that if the scope variable <code>isDropDown</code> is true, the value of <code>data-toggle</code> will be set to "dropdown". If <code>isDropDown</code> is false, then the value of <code>data-toggle</code> would simply be an empty string <code>""</code>. That doesn't seem to work though.

I have a resource &#39;roles&#39; which has a many to many relationship with &#39;user&#39;.  To administer &#39;roles&#39; I need to send the role id and the user id to the server so that it removes the the role from the correct user (not necessarily the logged in user)

Here is what I was attempting but according to the [docs][1] this is not possible.  I know I can send the two ids in the uri but my laravel backend automatically sets up a resourceful route of resource/{resourceid} which I would like to use if possible.  Is there a way to do this that I am missing?

    var removeRole = function (roleid, userid) {
            var input =[];
            input.user = userid;
    
            $http.delete(&#39;/roles/&#39; + roleid, input).success(function (data, status) {
                console.log(data);
            });
        };


  [1]: http://docs.angularjs.org/api/ng/service/$http#delete

How to send data with angularjs $http.delete() request?

I&#39;m new on protractor, and I&#39;m trying to implement an e2e test.
I don&#39;t know if this is the right way to do this, but...
The page that I want to test is not a full angular page based, so... I&#39;m having some trouble.

On my first spec I have: 

    describe(&#39;should open contact page&#39;, function() {
    var ptor = protractor.getInstance();

    beforeEach(function(){

       var Login = require(&#39;./util/Login&#39;);
       new Login(ptor);
    });

I have created this Login class, but after login I want to open the contact page, but protractor immediately try to find element before the page is fully loaded.

I&#39;ve tried to use:

    browser.driver.wait(function() {

        expect(browser.findElement(by.xpath(&quot;//a[@href=&#39;#/contacts&#39;]&quot;)).isDisplayed());
        ptor.findElement(by.xpath(&quot;//a[@href=&#39;#/contacts&#39;]&quot;)).click();

    });

But it doesn&#39;t work... it always try to find the element before the page loads.
I tried this one too:

    browser.driver.wait(function() {
        expect(ptor.isElementPresent(by.xpath(&quot;//a[@href=&#39;#/contacts&#39;]&quot;)));          
        ptor.findElement(by.xpath(&quot;//a[@href=&#39;#/contacts&#39;]&quot;)).click();
    });

I&#39;m able to do that using `browser.sleep();` but I don&#39;t think that is a good option. Any idea? On my login class I have:

    ptor.ignoreSynchronization = true;

How can I wait for this `@href=&#39;#/contacts` before protractor tries to click on it?


How can I wait for a condition?

So currently I&#39;m using [Angular UI Bootstrap][1] but I&#39;ve noticed [Angular-Strap][2] has been re-written to not be jQuery wrapped directives.  

Going through the new code of Angular-Strap I&#39;ve noticed some pretty nice improvements such as touch and more enhanced functionality over Angular UI.  Angular Experts, what is your current perspective on the two at the moment?


  [1]: http://angular-ui.github.io/bootstrap/
  [2]: https://github.com/mgcrea/angular-strap

Angular-UI vs Angular-Strap

Is it possible in Angular to validate a single, isolated `&lt;input&gt;` in a similar way the forms are validated? I&#39;m thinking about something like this:

	&lt;div class=&quot;form-group&quot;&gt;
	    &lt;input name=&quot;myInput&quot; type=&quot;text&quot; class=&quot;form-control&quot; ng-model=&quot;bindTo&quot; ng-maxlength=&quot;5&quot;&gt;
	    &lt;span class=&quot;error&quot; ng-show=&quot;myInput.$error.maxlength&quot;&gt;Too long!&lt;/span&gt;
	&lt;/div&gt;

The example above doesn&#39;t work. Enclosing it in a `&lt;form&gt;` and replacing `ng-show` with `ng-show=&quot;myForm.myInput.$error.maxlength&quot;` helps. 

Is it possible to do this without using `&lt;form&gt;`?

AngularJS &lt;input&gt; validation with no enclosing &lt;form&gt;

I&#39;m using the angular-ui-router library and I have a problem with URLs.

I have the following code:

app.js:

    app.config(function ($stateProvider, $urlRouterProvider) {
    $stateProvider
        .state(&#39;state&#39;, {
            url: &#39;/state&#39;,
            templateUrl: &#39;templates/state.html&#39;,
            onEnter: function () {
                /*... code ...*/
            }
        })});
index.html:

    &lt;a href=&quot;#/state&quot;&gt;STATE&lt;/a&gt;

This works, but when I remove &#39;#&#39; from the `&lt;a&gt;` tag this doesn&#39;t work.

How can I delete the &#39;#&#39; sign from the URL?

How to delete &#39;#&#39; sign in angular-ui-router URLs

I wrote a directive for dialogs (myPopup) and another one for dragging this dialog (myDraggable), but I allways get the error: 

&gt; Multiple directives [myPopup, myDraggable] asking for new/isolated scope

Here is a Plunker: http://plnkr.co/edit/kMQ0hK5RnVw5xOBdDq5P?p=preview

What can I do?

JS code:

    var app = angular.module(&#39;myApp&#39;, []);
    
    function myController($scope) {
        $scope.isDraggable = true;
    }
    
    
    app.directive(&#39;myPopup&#39;, [
        function () {
            &quot;use strict&quot;;
    
            return {
                restrict: &#39;E&#39;,
                replace: true,
                transclude: true,
                template: &#39;&lt;div my-draggable=&quot;draggable&quot;class=&quot;dialog&quot;&gt;&lt;div class=&quot;title&quot;&gt;{{title}}&lt;/div&gt;&lt;div class=&quot;content&quot; ng-transclude&gt;&lt;/div&gt;&lt;/div&gt;&#39;,
                scope: {
                    title: &#39;@?dialogTitle&#39;,
                    draggable: &#39;@?isDraggable&#39;,
                    width: &#39;@?width&#39;,
                    height: &#39;@?height&#39;,
                },
                controller: function ($scope) {
                    // Some code
                },
                link: function (scope, element, attr) {
                    if (scope.width) {
                        element.css(&#39;width&#39;, scope.width);
                    }
    
                    if (scope.height) {
                        element.css(&#39;height&#39;, scope.height);
                    }                    
                }
            };
        }
    ]);
    
    app.directive(&#39;myDraggable&#39;, [&#39;$document&#39;,
        function ($document) {
        return {
            restrict: &#39;A&#39;,
            replace: false,
            scope: { enabled: &#39;=myDraggable&#39; },
    
            link: function (scope, elm, attrs) {
                var startX, startY, initialMouseX, initialMouseY;
                
                if (scope.enabled === true) {
                    elm.bind(&#39;mousedown&#39;, function ($event) {
                        startX = elm.prop(&#39;offsetLeft&#39;);
                        startY = elm.prop(&#39;offsetTop&#39;);
                        initialMouseX = $event.clientX;
                        initialMouseY = $event.clientY;
                        $document.bind(&#39;mousemove&#39;, mousemove);
                        $document.bind(&#39;mouseup&#39;, mouseup);
                        $event.preventDefault();
                    });
                }
    
                function getMaxPos() {
                    var computetStyle = getComputedStyle(elm[0], null);
                    var tx, ty;
                    var transformOrigin =
                        computetStyle.transformOrigin ||
                        computetStyle.webkitTransformOrigin ||
                        computetStyle.MozTransformOrigin ||
                        computetStyle.msTransformOrigin ||
                        computetStyle.OTransformOrigin;
                    tx = Math.ceil(parseFloat(transformOrigin));
                    ty = Math.ceil(parseFloat(transformOrigin.split(&quot; &quot;)[1]));
                    return {
                        max: {
                            x: tx + window.innerWidth - elm.prop(&#39;offsetWidth&#39;),
                            y: ty + window.innerHeight - elm.prop(&#39;offsetHeight&#39;)
                        },
                        min: {
                            x: tx,
                            y: ty
                        }
                    };
                }
    
                function mousemove($event) {
                    var x = startX + $event.clientX - initialMouseX;
                    var y = startY + $event.clientY - initialMouseY;
                    var limit = getMaxPos();
                    x = (x &lt; limit.max.x) ? ((x &gt; limit.min.x) ? x : limit.min.x) : limit.max.x;
                    y = (y &lt; limit.max.y) ? ((y &gt; limit.min.y) ? y : limit.min.y) : limit.max.y;
                    elm.css({
                        top: y + &#39;px&#39;,
                        left: x + &#39;px&#39;
                    });
                    $event.preventDefault();
                }
    
                function mouseup() {
                    $document.unbind(&#39;mousemove&#39;, mousemove);
                    $document.unbind(&#39;mouseup&#39;, mouseup);
                }
            }
        };
    }]);

Multiple directives [myPopup, myDraggable] asking for new/isolated scope

Why does `replace=true` or `replace=false` not have any impact in the code below?

Why isn&#39;t the &quot;some existing content&quot; being displayed when replace=false?

Or putting it more humbly, can you kindly explain what is the `replace=true/false` feature in directives and how to use it?

**Example**

JS/Angular:

	&lt;script&gt;
		angular.module(&#39;scopes&#39;, [])
			  .controller(&#39;Ctrl&#39;, function($scope) {
                    $scope.title = &quot;hello&quot;;

			  })
			  .directive(&#39;myDir&#39;, function() {
			    return {
			      restrict: &#39;E&#39;,
                  replace: true,
				  template: &#39;&lt;div&gt;{{title}}&lt;/div&gt;&#39;
			    };
		  });
	&lt;/script&gt;

HTML:

	&lt;div ng-controller=&quot;Ctrl&quot;&gt;
		&lt;my-dir&gt;&lt;h3&gt;some existing content&lt;/h3&gt;&lt;/my-dir&gt;
	&lt;/div&gt;

See it in Plunker here:

http://plnkr.co/edit/4ywZGwfsKHLAoGL38vvW?p=preview


How to use the &#39;replace&#39; feature for custom AngularJS directives?

I am new to angularjs. How can I detect userAgent in angularjs. Is it possible to use that in controller? Tried something like below but no luck!


      var browserVersion = int((/msie (\d+)/.exec(lowercase(navigator.userAgent)) || [])[1]);


I need to detect IE9 specifically!

How to detect browser using angularjs?

I&#39;m trying to make directive with differtent templates based on scope value.

This is what i done so far which i don&#39;t know why doesn&#39;t work http://jsbin.com/mibeyotu/1/edit

HTML element: 

    &lt;data-type content-attr=&quot;test1&quot;&gt;&lt;/data-type&gt;

Directive:

    var app = angular.module(&#39;myApp&#39;, []);

    app.directive(&#39;dataType&#39;, function ($compile) {

        var testTemplate1 = &#39;&lt;h1&gt;Test1&lt;/h1&gt;&#39;;
        var testTemplate2 = &#39;&lt;h1&gt;Test2&lt;/h1&gt;&#39;;
        var testTemplate3 = &#39;&lt;h1&gt;Test3&lt;/h1&gt;&#39;;

        var getTemplate = function(contentType){

            var template = &#39;&#39;;

            switch(contentType){
                case &#39;test1&#39;:
                    template = testTemplate1;
                    break;
                case &#39;test2&#39;:
                    template = testTemplate2;
                    break;
                case &#39;test3&#39;:
                    template = testTemplate3;
                    break;
            }

            return template;
        }; 

        var linker = function(scope, element, attrs){
            element.html(getTemplate(scope.content)).show();
            $compile(element.contents())(scope);
        };

        return {
            restrict: &quot;E&quot;,
            replace: true,
            link: linker,
            scope: {
                content:&#39;=&#39;
            }
        };
    });

AngularJS directive dynamic templates

I have a list of items in my view with `ng-click` attached to them:

    &lt;ul id=&quot;team-filters&quot;&gt;
	    &lt;li ng-click=&quot;foo($event, team)&quot; ng-repeat=&quot;team in teams&quot;&gt;
             &lt;img src=&quot;{{team.logoSmall}}&quot; alt=&quot;{{team.name}}&quot; title=&quot;{{team.name}}&quot;&gt;
        &lt;/li&gt;
    &lt;/ul&gt;

I&#39;m handling the click events in the `foo` function in my directive, passing `$event` as a reference to the object that&#39;s been clicked, but I&#39;m getting a reference to the `img` tag, rather than the `li` tag. I then have to do stuff like this to get the `li`:

    $scope.foo = function($event, team) {
	   var el = (function(){
		   if ($event.target.nodeName === &#39;IMG&#39;) {
		      return angular.element($event.target).parent(); // get li
		   } else {
		      return angular.element($event.target);          // is li
		   }
	   })();

 Is there a simple way to get the reference to the element that `ng-click` is bound to, without doing DOM operations in my directive?

Content Type	Original Author	Original Content on Stackoverflow
Question	core	View Question on Stackoverflow
Solution 1 - Angularjs	Aurelio	View Answer on Stackoverflow
Solution 2 - Angularjs	Garfi	View Answer on Stackoverflow
Solution 3 - Angularjs	Wawy	View Answer on Stackoverflow

Conditionally adding data-attribute in Angular directive template

Angularjs Problem Overview

Angularjs Solutions

Solution 1 - Angularjs

Solution 2 - Angularjs

Solution 3 - Angularjs

creating Hashmap from a JSON String

How to cast the size_t to double or int C++

Attributions