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  • With Google Website Optimizer's multivariate testing, can I vary multiple css classes on a single di

    - by brahn
    I would like to use Google Website Optimizer (GWO)'s multivariate tests to test some different versions of a web page. I can change from version to version just by varying some class tags on a div, i.e. the different versions are of this form: <div id="testing" class="foo1 bar1">content</div> <div id="testing" class="foo1 bar2">content</div> <div id="testing" class="foo2 bar1">content</div> <div id="testing" class="foo2 bar2">content</div> In the ideal, I would be able to use GWO section code in place of each class, and google would just swap in the appropriate tags (foo1 or foo2, bar1 or bar2). However, naively doing this results in horribly malformed code because I would be trying to put <script> tags inside the div's class attribute: <div id="testing" class=" <script>utmx_section("foo-class")</script>foo1</noscript> <script>utmx_section("bar-class")</script>bar1</noscript> "> content </div> And indeed, the browser chokes all over it. My current best approach is just to use a different div for each variable in the test, as follows: <script>utmx_section("foo-class-div")</script> <div class="foo1"> </noscript> <script>utmx_section("bar-class-div")</script> <div class="bar1"> </noscript> content </div> </div> So testing multiple variables requires layer of div-nesting per variable, and it all seems rather awkward. Is there a better approach that I could use in which I just vary the classes on a single div?

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  • How to avoid overlapping date ranges when using a grouping clause?

    - by k rey
    I have a situation where I need to find time spans between value changes. I tried a simple group by clause but it eliminates overlapping changes. Consider the following example: create table #items ( code varchar(4) , class varchar(4) , txdate datetime ) insert into #items (code, class, txdate) values ('A', 'C', '2010-01-01'); insert into #items (code, class, txdate) values ('A', 'C', '2010-01-02'); insert into #items (code, class, txdate) values ('A', 'C', '2010-01-03'); insert into #items (code, class, txdate) values ('A', 'D', '2010-01-04'); insert into #items (code, class, txdate) values ('A', 'D', '2010-01-05'); insert into #items (code, class, txdate) values ('A', 'C', '2010-01-06'); insert into #items (code, class, txdate) values ('A', 'C', '2010-01-07'); insert into #items (code, class, txdate) values ('A', 'D', '2010-01-08'); insert into #items (code, class, txdate) values ('A', 'D', '2010-01-09'); select code , class , min(txdate) mindate , max(txdate) maxdate from #items group by code, class This returns the following results (notice the overlapping date ranges): |code|class|mindate |maxdate | ---------------------------------- |A |C |2010-01-01|2010-01-07| |A |D |2010-01-04|2010-01-09| I would like to have the query return the following: |code|class|mindate |maxdate | ---------------------------------- |A |C |2010-01-01|2010-01-03| |A |D |2010-01-04|2010-01-05| |A |C |2010-01-06|2010-01-07| |A |D |2010-01-08|2010-01-09| Any ideas and suggestions?

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  • add dynamic field near his parent field?

    - by Kaps Hasija
    hi in my web page i am using Add Dynamic Field Functionality by using jquery. I am adding new div bu clicking on Existing div Like <div class="divA">divA1 </div> <div class="divB" >DivB1 </div> <div class="divC" />DivC1 </div> by clicking on parent div i am creating new daynamic div <div class="divA">DivA2 </div> its coming end of the all div's like that <div class="divA">divA1 </div> <div class="divB" >DivB1 </div> <div class="divC" />DivC1 </div> <div class="divA">DivA2 </div> But i need along with his parent div Like that <div class="divA">divA1 </div> <div class="divA">DivA2 </div> <div class="divB" >DivB1 </div> <div class="divC" />DivC1 </div> any idea Thanks. This is My Jquery Code newTextBoxDiv = $(document.createElement('div')) .attr("id", text).attr("class", 'test0 ' + text); newTextBoxDiv.html('<div style=" width:150px; class="DivA" float: left"> </div>'); } newTextBoxDiv.appendTo("#contents"); contents is id of main div

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  • Basic PHP OOPS Query

    - by appu
    Ok. I am starting out OOPS in PHP. Created a couple of classes: customer(parent) and sales(child) class that inherits from parent class. Created another testcustomer.php in which a new sales object is created however the salesprint() function defined in the sales class does not echo out customer's name though it is set to be "Jane" in the class.customer.php(parent). My thinking is that when sales class extends customer class PHP automatically includes all the code from class.customer.php to sales.customer.php and therefore the constructor in parent class set $name to "Jane". Here is the code: class.customer.php <?php class customer{ private $name; private $cust_no; public function __construct($customerid) { $this->name = 'Jane'; $this->cust_no = $customerid; } } ?> class.sales.php <?php require_once('class.customer.php'); class sales extends customer{ public function salesprint($customerid) { echo "Hello $this->name this is a print of your purchased products"; } } ?> testcustomer.php require_once('class.sales.php'); $objsales = new sales(17); $objsales->salesprint(17); ?> The Output I get Hello this is a print of your purchased products. What am i doing wrong ? thanks romesh

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  • How to refresh jQuery Selector Value after an execution?

    - by Devyn
    Hi, I have like this. $(document).ready(function() { var $clickable_pieces = $('.chess_piece').parent(); $($clickable_pieces).addClass('selectee'); // add selectee class var $selectee = $('.chess_square.selectee'); // wait for click $($selectee).bind('click',function(){ $('.chess_square.selected').removeClass('selected'); $(this).addClass('selected'); { ........... } }); I initially inject 'selectee' class to all div which has 'chess_piece' class then I select DIVs with that class $('.chess_square.selectee'). <div id="clickable"> <div id="div1" class="chess_square"> </div> <div id="div2" class="chess_square selectee"> <div id="sub1" class="chess_piece queen"></div> </div> <div id="div3" class="chess_square"> </div> </div> There are two type of DIV element with class named 'chess_square selectee' and 'chess_square' which doesn't meant to be clickable. I move around Sub DIV of 'rps_square selectee' from DIV2 to DIV1 and add and remove classes to be exactly same like this. The meaning is Queen Piece is moved from Div2 to Div1. <div id="div1" class="chess_square selectee"> <div id="sub1" class="chess_piece queen"></div> </div> <div id="div2" class="chess_square"> </div> <div id="div3" class="chess_square"> </div> However, the problem is jQuery doesn't update var $selectee = $('.rps_square.selectee');. Even though I changed class names, DIV1 is not clickable and DIV2 is still clickable. By the way, I've used jQuery UI selectable but doesn't refresh either.

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  • Jquery Selectors not working

    - by Breezer
    I use the following selector to get the value out of an input that's inside a table but it doesnt work properly? var kom =$("tr#1 .b input").attr(value); and row looks as follow <tr class="numbers" id="1"> <td class="a" align="right">1</td> <td class="a" align="left">Tue</td> <td class="b"><input class="input" type="text" title="" value=""/></td> <td class="c"><input class="input" type="text" title="" value=""/></td> <td class="d"><input class="input" type="text" title="" value=""/></td> <td class="e"><input class="input" type="text" title="" value=""/></td> <td class="f">0</td> <td class="g"><input class="input" type="text" title="" value=""/></td> </tr> any suggestion on what i might be doing wrong any aid is greatly appreciated regards breezer

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  • Is there a pattern or best practice for passing a reference type to multiple classes vs a static class?

    - by Dave
    My .NET application creates HTML files, and as such, the structure looks like variable myData BuildHomePage() variable graph = new BuildGraphPage(myData) variable table = BuildTablePage(myData) BuildGraphPage and BuildTablePage both require access data, the myData object. In the above example, I've passed the myData object to 2 constructors. This is what I'm doing now, in my current project. The myData object, and it's properties are all readonly. The problem is, the number of pages which will require this object has grown. In the real project, there are currently 4, but the new spec is to have about 20. Passing this object to the constructor of each new object and assigning it to a field is a little time consuming, but not a hardship! This poses the question whether it's better practice to continue as I have, or to refactor and create a new static class for myData which can be referenced from any where in my project. I guess my abilities to use Google are poor, because I did try and find an appropriate pattern as I am sure this type of design must be common place but my results returned nothing. Is there a pattern which is suited, or do best practices lean towards one implementation over another.

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  • Is this kind of design - a class for Operations On Object - correct?

    - by Mithir
    In our system we have many complex operations which involve many validations and DB activities. One of the main Business functionality could have been designed better. In short, there were no separation of layers, and the code would only work from the scenario in which it was first designed at, and now there were more scenarios (like requests from an API or from other devices) So I had to redesign. I found myself moving all the DB code to objects which acts like Business to DB objects, and I've put all the business logic in an Operator kind of a class, which I've implemented like this: First, I created an object which will hold all the information needed for the operation let's call it InformationObject. Then I created an OperatorObject which will take the InformationObject as a parameter and act on it. The OperatorObject should activate different objects and validate or check for existence or any scenario in which the business logic is compromised and then make the operation according to the information on the InformationObject. So my question is - Is this kind of implementation correct? PS, this Operator only works on a single Business-wise Operation.

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  • Is creating a separate pool for each individual png image in the same class appropriate?

    - by Panzercrisis
    I'm still possibly a little green about object-pooling, and I want to make sure something like this is a sound design pattern before really embarking upon it. Take the following code (which uses the Starling framework in ActionScript 3): [Embed(source = "/../assets/images/game/misc/red_door.png")] private const RED_DOOR:Class; private const RED_DOOR_TEXTURE:Texture = Texture.fromBitmap(new RED_DOOR()); private const m_vRedDoorPool:Vector.<Image> = new Vector.<Image>(50, true); . . . public function produceRedDoor():Image { // get a Red Door image } public function retireRedDoor(pImage:Image):void { // retire a Red Door Image } Except that there are four colors: red, green, blue, and yellow. So now we have a separate pool for each color, a separate produce function for each color, and a separate retire function for each color. Additionally there are several items in the game that follow this 4-color pattern, so for each of them, we have four pools, four produce functions, and four retire functions. There are more colors involved in the images themselves than just their predominant one, so trying to throw all the doors, for instance, in a single pool, and then changing their color properties around isn't going to work. Also the nonexistence of the static keyword is due to its slowness in AS3. Is this the right way to do things?

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  • Static DataTable or DataSet in a class - bad idea?

    - by Superbest
    I have several instances of a class. Each instance stores data in a common database. So, I thought "I'll make the DataTable table field static, that way every instance can just add/modify rows to its own table field, but all the data will actually be in one place!" However, apparently it's a bad idea to do use static fields, especially if it's databases: Don't Use "Static" in C#? Is this a bad idea? Will I run into problems later on if I use it? This is a small project so I can accept no testing as a compromise if that is the only drawback. The benefit of using a static database is that there can be many objects of type MyClass, but only one table they all talk to, so a static field seems to be an implementation of exactly this, while keeping syntax concise. I don't see why I shouldn't use a static field (although I wouldn't really know) but if I had to, the best alternative I can think of is creating one DataTable, and passing a reference to it when creating each instance of MyClass, perhaps as a constructor parameter. But is this really an improvement? It seems less intuitive than a static field.

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  • How can I include my derived class type name in the serialized JSON?

    - by ChrisD
    Sometimes working with the js Serializer is easy, sometimes its not.   When I attempt to serialize an object that is derived from a base, the serializer decided whether or not to include the type name. When its present, the type name is represented by a ___type attribute in the serialized json like this: {"d":{"__type":"Commerce.Integration.Surfaces.OrderCreationRequest","RepId":0}} The missing type name is a problem if I intend to ship the object back into a web method that needs to deserialize the object.   Without the Type name, serialization will fail and result in a ugly web exception. The solution, which feels more like a work-around, is to explicitly tell the serializer to ALWAYS generate the type name for each derived type.  You make this declaration by adding a [GenerateScriptType())] attribute for each derived type to the top of the web page declaration.   For example, assuming I had 3 derivations of OrderCreationRequest; PersonalOrderCreationRequest, CompanyOrderCreationRequest, InternalOrderCreationRequestion, the code-behind for my web page would be decorated as follows: [GenerateScriptType(typeof(PersonalOrderCreationRequest))] [GenerateScriptType(typeof(CompanyOrderCreationRequest))] [GenerateScriptType(typeof(InternalOrderCreationRequest))] public partial class OrderMethods : Page { ... } With the type names generated in the serialized JSON, the serializer can successfully deserialize instances of any of these types passed into a web method. Hope this helps you as much as it did me.

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  • Jquery Smart Wizard freezing up

    - by Andrew
    I'm using IE 8 and the jquery smart wizard version 3.2.0. I've noticed when enclose the smart wizard within an additional <div> tag (with the intent of displaying the wizard within a jquery dialog popup), the wizard will not advance steps when a function is specified for the onLeaveStep event. And now for the code: The javascript setting up the wizard: $('#wizard').smartWizard({ transitionEffect: 'slideleft', onLeaveStep: leaveAStepCallback, onFinish: onFinishCallback}); Simple functions associated with the events for the wizard: // wizard functions function leaveAStepCallback(obj) { // Get current step var step_num = obj.attr('rel'); // get the current step number } function onFinishCallback() { alert('Finish Called'); } function showStep(obj) { // Get current step var step_num = obj.attr('rel'); // get the current step number } And the HTML markup (I removed the step content within the <p> tags for brevity - this resulted it the same lack of functionality as if there was content within, so that can be ruled out) <div id="wizDialog"> <div id="wizard" class="swMain"> <ul> <li><a href="#step-1"> <label class="stepNumber">1</label> <span class="stepDesc"> Step 1<br /> <small>Step 1 - </small> </span> </a></li> <li><a href="#step-2"> <label class="stepNumber">2</label> <span class="stepDesc"> Step 2<br /> <small>Step 2 - </small> </span> </a></li> <li><a href="#step-3"> <label class="stepNumber">3</label> <span class="stepDesc"> Step 3<br /> <small>Step 3 - </small> </span> </a></li> <li><a href="#step-4"> <label class="stepNumber">4</label> <span class="stepDesc"> Step 4<br /> <small>Step 4 - </small> </span> </a></li> <li><a href="#step-5"> <label class="stepNumber">5</label> <span class="stepDesc"> Step 5<br /> <small>Step 5 - </small> </span> </a></li> <li><a href="#step-6"> <label class="stepNumber">6</label> <span class="stepDesc"> Step 6<br /> <small>Step 6 - </small> </span> </a></li> <li><a href="#step-7"> <label class="stepNumber">7</label> <span class="stepDesc"> Step 7<br /> <small>Step 7 - </small> </span> </a></li> <li><a href="#step-8"> <label class="stepNumber">8</label> <span class="stepDesc"> Step 8<br /> <small>Step 8 - </small> </span> </a></li> </ul> <div id="step-1"> <h2 class="StepTitle">Step 1 Content</h2> <p> </p> </div> <div id="step-2"> <h2 class="StepTitle">Step 2 Content</h2> <p> </p> </div> <div id="step-3"> <h2 class="StepTitle">Step 3 Content</h2> <p> </p> </div> <div id="step-4"> <h2 class="StepTitle">Step 4 Content</h2> <p> </p> </div> <div id="step-5"> <h2 class="StepTitle">Step 5 Content</h2> <p> </p> </div> <div id="step-6"> <h2 class="StepTitle">Step 6 Content</h2> <p> </p> </div> <div id="step-7"> <h2 class="StepTitle">Step 7 Content</h2> <p> </p> </div> <div id="step-8"> <h2 class="StepTitle">Step 8 Content</h2> <p> </p> </div> </div> </div> Has anyone had similar results with this? Or have an explanation why the wizard will not work when nested within additional <div> tags?

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  • What is "Disable class based route addition" good for?

    - by id.roppert.dejroppert
    In the advanced TCP/IP settings of a VPN connection, i found a checkbox labeled with "Disable class based route addition". The checkbox is only enabled as long as "Use default gateway on remote network" is switched off. What is "Disable class based route addition" good for? Detailed instructions to find the settings: Open Properties of VPN connection Go to Networking tab Open Properties of "Internet Protocol Version 4 (TCP/IPv4)" (and/or TCP/IPv6) Click "Advanced..." Button Change to "IP Settings" tab Here you can find the checkboxes mentioned above

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  • How to override C# DateTime serialization with class auto-generated from wsdl?

    - by Calvin Fisher
    I have a WSDL that the consumer of my web service expects will be adhered to strictly. I converted it into an interface with wsdl.exe and had my web service implement it. Except for this problem, I have been generally pleased with the results. A simple GetCurrentTime method will have the following response class generated from the WSDL in the interface definition: [System.CodeDobmCompiler.GeneratedCodeAttribute("wsdl", "2.0.50727.3038")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(Namespace="[Client Namespace]")] public partial class GetCurrentTimeResponse { private System.DateTime timeStampField; [System.Xml.Serialization.XmlElementAttribute(Form=System.Xml.Schema.XmlSchemaForm.Unqualified] public System.DateTime TimeStamp{ // [accesses timeStampField] } } When I put the response data into the automatically generated response class, it gets serialized into an appropriate XML response. (Most of the web methods have much more complicated return types with multiple levels of arrays.) The problem is that the default serialization of DateTime objects violates one of the requirements in the WSDL: ... <xsd:simpleType name="SearchTimeStamp"> <xsd:restriction base="xsd:dateTime"> <xsd:pattern value="[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}(.[0-9]{1,7})?Z"> </xsd:restriction> </xsd:simpleType> ... Note the last part of the pattern where subseconds must be either 1 or 7 characters if they are included. The client seems to be rejecting the response because it does not match that requirement. The main issue is that when .NET serializes a DateTime object, it omits all trailing zeroes, meaning the resulting subsecond value varies in length. (e.g., "12:34:56.700" gets serialized as "<TimeStamp>12:34:56:7</TimeStamp>" by default). We use millisecond precision, so I need all timestamps to format with 7 subsecond digits in order to be compliant with the WSDL. It would be easy if I could specify a format string, but I'm not sure how to control the string that the DateTime object uses to serialize to XML, or to otherwise override the serialization behavior. How do I do this? Keeping in mind the following... I would like to modify the generated code as little as possible... preferably not at all if the change can be made through a partial class or inherited class. Using an inherited class for the return type of the web method will cause the web service to no longer implement the auto-generated interface. The TimeStamp type occurs in other, more complex response types. So, manually overriding the entire serialization process may be prohibitively time-consuming.

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  • RapidXML - does not compile ?

    - by milan
    Hi, I am novice to rapidXML but first impresion was not positive, I made simple Visual Studio 6 C++ Hello World Application and added RapidXML hpp files to project and in main.cpp I put: #include "stdafx.h" #include < iostream > #include < string > #include "rapidxml.hpp" using namespace std; using namespace rapidxml; int main ( ) { char x[] = "<Something>Text</Something>\0" ; //<<<< funktioniert, aber mit '*' nicht xml_document<> doc ; doc.parse<0>(x) ; cout << "Name of my first node is: " << doc.first_node()->name() << endl ; xml_node<>* node = doc.first_node("Something") ; cout << "Node 'Something' has value: " << node->value() << endl ; } And it does not compile, any help ? Is RapidXML possible to run with Visual Studio 6 ? Error I am getting are: --------------------Configuration: aaa - Win32 Debug-------------------- Compiling... rapidxml.cpp c:\Parser\rapidxml.cpp(310) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(320) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(320) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(385) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(417) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(417) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(448) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(448) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(476) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(579) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(599) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(639) : see reference to class template instantiation 'rapidxml::memory_pool<Ch>' being compiled c:\Parser\rapidxml.cpp(681) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(700) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(721) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(751) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(786) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(787) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(790) : see reference to class template instantiation 'rapidxml::xml_base<Ch>' being compiled c:\Parser\rapidxml.cpp(836) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(876) : see reference to class template instantiation 'rapidxml::xml_attribute<Ch>' being compiled c:\Parser\rapidxml.cpp(856) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(876) : see reference to class template instantiation 'rapidxml::xml_attribute<Ch>' being compiled c:\Parser\rapidxml.cpp(936) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled c:\Parser\rapidxml.cpp(958) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled c:\Parser\rapidxml.cpp(981) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled c:\Parser\rapidxml.cpp(1004) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled c:\Parser\rapidxml.cpp(1025) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled c:\Parser\rapidxml.cpp(1045) : error C2039: 'size_t' : is not a member of 'std' c:\Parser\rapidxml.cpp(1345) : see reference to class template instantiation 'rapidxml::xml_node<Ch>' being compiled Error executing cl.exe. rapidxml.obj - 25 error(s), 0 warning(s)

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  • What is the Relative Performance of Pseudo-Class and Custom Selectors?

    - by James Wiseman
    It's my understanding that, in terms of selector speed, that #ID selectors are fastest, followed by element selectors, and then .class selectors. I have always assumed that pseudo-class selectors and custom selectors (those in the form ':selector') are similar to .class selectors, but I realised that I'm just not sure. I realise that this does depend on the complexity of the code within the pseudo-class/custom selector, so I guess I'd like to know the answer with this excluded as factor. Any help would be appreciated. Thanks.

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  • In Java Concurrency In Practice by Brian Goetz, why is the Memoizer class not annotated with @ThreadSafe?

    - by dig_dug
    Java Concurrency In Practice by Brian Goetz provides an example of a efficient scalable cache for concurrent use. The final version of the example showing the implementation for class Memoizer (pg 108) shows such a cache. I am wondering why the class is not annotated with @ThreadSafe? The client, class Factorizer, of the cache is properly annotated with @ThreadSafe. The appendix states that if a class is not annotated with either @ThreadSafe or @Immutable that it should be assumed that it isn't thread safe. Memoizer seems thread-safe though. Here is the code for Memoizer: public class Memoizer<A, V> implements Computable<A, V> { private final ConcurrentMap<A, Future<V>> cache = new ConcurrentHashMap<A, Future<V>>(); private final Computable<A, V> c; public Memoizer(Computable<A, V> c) { this.c = c; } public V compute(final A arg) throws InterruptedException { while (true) { Future<V> f = cache.get(arg); if (f == null) { Callable<V> eval = new Callable<V>() { public V call() throws InterruptedException { return c.compute(arg); } }; FutureTask<V> ft = new FutureTask<V>(eval); f = cache.putIfAbsent(arg, ft); if (f == null) { f = ft; ft.run(); } } try { return f.get(); } catch (CancellationException e) { cache.remove(arg, f); } catch (ExecutionException e) { throw launderThrowable(e.getCause()); } } } }

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  • dynamically create class in scala, should I use interpreter?

    - by Phil
    Hi, I want to create a class at run-time in Scala. For now, just consider a simple case where I want to make the equivalent of a java bean with some attributes, I only know these attributes at run time. How can I create the scala class? I am willing to create from scala source file if there is a way to compile it and load it at run time, I may want to as I sometimes have some complex function I want to add to the class. How can I do it? I worry that the scala interpreter which I read about is sandboxing the interpreted code that it loads so that it won't be available to the general application hosting the interpreter? If this is the case, then I wouldn't be able to use the dynamically loaded scala class. Anyway, the question is, how can I dynamically create a scala class at run time and use it in my application, best case is to load it from a scala source file at run time, something like interpreterSource("file.scala") and its loaded into my current runtime, second best case is some creation by calling methods ie. createClass(...) to create it at runtime. Thanks, Phil

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  • How can I access a method of the consumer class inside a method created at runtime in a method of th

    - by xxxxxxx
    I define a method inside a parametrized role that needs to create a new class at run time using Moose::Meta::Class->create and apply that exact parametrized role to it. I am also making a new method for that role using $new_class->meta->add_method( some_name => sub { my ($self) = @_; ... }) inside the sub {...} I want to access a method of the consumer class and use it for something, I have tried using $self->get_method, it didn't work, how do I do this? Please notice that the $self inside the sub above is MooseX::Role::Parameterized::Meta::Role::Parameterizable I also have another question, if I do this: my $object = Moose::Meta::Class->create( "some_type", ); Why isn't $object of type some_type and it's some ugly MooseX::Role::Parameterized::Meta::Role::Parameterizable and how do I get to the object of type some_type?

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  • Why won't my DIV height grow? Is it because I am using floats?

    - by user1684636
    Please help! I am trying to create some div sections and some of these div sections have some other divs that are floated. All of which I have cleared. But the sections are not growing to accomodate the content inside of them. The following is my HTML - <div class="data"> <div class="name">Data</div> <div class="first section"> <div class="title">First Section</div> <div class="left settings"> <div class="row"> <div class="field">First Name</div> <div class="value">John</div> </div> <div class="row"> <div class="field">Last Name</div> <div class="value">Smith</div> </div> </div> <div class="right settings"> <div class="row"> <div class="field">ID</div> <div class="value">321</div> </div> <div class="row"> <div class="field">Group</div> <div class="value">Eng</div> </div> </div> </div> <div class="second section"> <div class="title">Second Section</div> </div> <div class="third section"> <div class="title">Third Section</div> </div> </div> The following is my CSS - div.data { position: relative; top: 1em; width: 100em; } div.data div.name { color: #0066FF; font-weight: bold; } div.data div.section div.title { color: green; font-weight: bold; } /** first section **/ div.data div.first div.settings { position: relative; width: 799px; border-top: 1px solid; float: left; } div.data div.first div.left { border-left: 1px solid; } div.data div.first div.settings div.row { border-bottom: 1px solid; clear: both; height: 2em; } div.data div.first div.settings div.row div { float: left; height: 22px; padding: 5px; border-right: 1px solid; } div.data div.first div.settings div.row div.field { width: 192px; } div.data div.first div.settings div.row div.value { width: 585px; } /** second section **/ div.data div.second { clear: both; } For the first section, I have a title and a table that is made up of a left and right. Both of these are floated left and cleared. The rows of the left and right table have a field and value which are also floated left and right and cleared. At this point, I expect "first section" to grow as the content inside of it grows. But instead the height is stuck at 22px, the same height as the section title! What is going on? I tried overflow:auto for div.section and that worked. But when I tried to set this style for div.settings in "first section": div.data div.first div.settings { position: relative; top: 1em; } I end up with these scroll bars, instead of the height growing to fit the new changes. And everything was out of whack. I am really at my wit's end trying to figure this out. If anyone can give me any suggestions on what I am doing wrong, it would be a great help. Thanks.

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  • Why can't I use WCF DataContract and ISerializable on the same class?

    - by Dave
    Hi all, I have a class that I need to be able to serialize to a SQLServer session variable and be available over a WCF Service. I have declared it as follows namespace MyNM { [Serializable] [DataContract(Name = "Foo", Namespace = "http://www.mydomain.co.uk")] public class Foo : IEntity, ISafeCopy<Foo> { [DataMember(Order = 0)] public virtual Guid Id { get; set; } [DataMember(Order = 1)] public virtual string a { get; set; } DataMember(Order = 2)] public virtual Bar c { get; set; } /* ISafeCopy implementation */ } [Serializable] [DataContract(Name = "Bar ", Namespace = "http://www.mydomain.co.uk")] public class Bar : IEntity, ISafeCopy<Bar> { #region Implementation of IEntity DataMember(Order = 0)] public virtual Guid Id { get; set; } [DataMember(Order = 1)] public virtual Baz y { get; set; } #endregion /* ISafeCopy implementation*/ } [Serializable] [DataContract] public enum Baz { [EnumMember(Value = "one")] one, [EnumMember(Value = "two")] two, [EnumMember(Value = "three")] three } But when I try and call this service, I get the following error in the trace log. "System.Runtime.Serialization.InvalidDataContractException: Type 'BarProxybcb100e8617f40ceaa832fe4bb94533c' cannot be ISerializable and have DataContractAttribute attribute." If I take out the Serializable attribute, the WCF service works, but when the object can't be serialized to session. If I remove the DataContract attribute from class Bar, the WCF service fails saying Type 'BarProxy3bb05a31167f4ba492909ec941a54533' with data contract name 'BarProxy3bb05a31167f4ba492909ec941a54533:http://schemas.datacontract.org/2004/07/' is not expected. Add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer I've tried adding a KnownType attribute to the foo class [KnownType(typeof(Bar))] But I still get the same error. Can anyone help me out with this? Many thanks Dave

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  • EntityFramework repository template- how to write GetByID lamba within a template class?

    - by FerretallicA
    I am trying to write a generic one-size-fits-most repository pattern template class for an Entity Framework-based project I'm currently working on. The (heavily simplified) interface is: internal interface IRepository<T> where T : class { T GetByID(int id); IEnumerable<T> GetAll(); IEnumerable<T> Query(Func<T, bool> filter); } GetByID is proving to be the killer. In the implementation: public class Repository<T> : IRepository<T>,IUnitOfWork<T> where T : class { // etc... public T GetByID(int id) { return this.ObjectSet.Single<T>(t=>t.ID == id); } t=t.ID == id is the particular bit I'm struggling with. Is it even possible to write lamba functions like that within template classes where no class-specific information is going to be available?

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  • Why can't I call methods within a class that explicitly implements an interface?

    - by tyrone302
    Here's the story. I created and interface, IVehicle. I explicitly implemented the interface in my class, Vehicle.cs. Here is my interface: Interface IVehicle { int getWheel(); } here is my class: class Vehicle: IVehicle { public int IVehicle.getWheel() { return wheel; } public void printWheel() { Console.WriteLine(getWheel()); } } Notice that "getWheel()" is explicitly implemented. Now, when I try to call that method within my Vehicle class, I receive an error indicating that getWheel() does not exist in the current context. Can someone help me understand what I am doing wrong?

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  • Parsing tables, cells with Html agility in C#

    - by Kaeso
    I need to parse Html code. More specifically, parse each cell of every rows in all tables. Each row represent a single object and each cell represent different properties. I want to parse these to be able to write an XML file with every data inside (without the useless HTML code). This is the way I thought it out initially but I ran out of ideas: HTML: <tr> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="left"> <a href="/ice/player.htm?id=8471675">Sidney Crosby</a> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> PIT </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="center"> C </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 39 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 32 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 33 </td> <td class="statBox sorted" style="border-width:0px 1px 1px 0px; background-color: #E0E0E0" align="right"> <font color="#000000"> 65 </font> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 29 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 10 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 1 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 3 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 0 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 154 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 20.8 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 21:54 </td> <td class="statBox" style="border-width:0px 1px 1px 0px; background-color: #FFFFFF" align="right"> 22.6 </td> <td class="statBox" style="border-width:0px 0px 1px 0px; background-color: #FFFFFF" align="right"> 55.7 </td> </tr> C#: using HtmlAgilityPack; using System.Data; namespace Stats { class StatsParser { private string htmlCode; private static string fileName = "[" + DateTime.Now.ToShortDateString() + " NHL Stats].xml"; public StatsParser(string htmlCode) { this.htmlCode = htmlCode; this.ParseHtml(); } public DataTable ParseHtml() { var result = new DataTable(); HtmlDocument doc = new HtmlDocument(); doc.LoadHtml(htmlCode); HtmlNode row = doc.DocumentNode.SelectNodes("//tr"); foreach (var statBox in row.SelectNodes("//td[@class='statBox']")) { System.Windows.MessageBox.Show(statBox.InnerText); } } } }

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