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• How can you tell if an activity is starting or resuming?

  - by Joren

  I have an activity which pulls some JSON from my server, and then uses it to draw a list. That list launches further activities. My problem is that I can't figure out a way to tell if the activity is still alive when you go back to it, so I end up re-querying my JSON from the server and redrawing the list every time the user goes back to the activity. How can I tell if my activity is still alive so I can skip the redraw? Using onRestart works for hitting the home key then going back, but onCreate not onRestart is called if I selected a list item then hit back.

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• Effecient data structure design

  - by Sway

  Hi there, I need to match a series of user inputed words against a large dictionary of words (to ensure the entered value exists). So if the user entered: "orange" it should match an entry "orange' in the dictionary. Now the catch is that the user can also enter a wildcard or series of wildcard characters like say "or__ge" which would also match "orange" The key requirements are: * this should be as fast as possible. * use the smallest amount of memory to achieve it. If the size of the word list was small I could use a string containing all the words and use regular expressions. however given that the word list could contain potentially hundreds of thousands of enteries I'm assuming this wouldn't work. So is some sort of 'tree' be the way to go for this...? Any thoughts or suggestions on this would be totally appreciated! Thanks in advance, Matt

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• "User-defined type not defined" error in VB 6 under Windows 7

  - by sunil.nishad87

  I am using Windows 7 and my project is in VB 6.0. I am getting errors while I am executing my program. It shows the error: User-defined type not defined. Here is my code: Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button) Select Case Button.Key Case "trace": Call mntrace_Click Case "snrplot": Call mnSnrplot_Click Case "skyplot": Call mnskyplot_Click Case "nmea": Call mnNmea_Click Case "navigation": Call mnNavigation_Click Case "survey": Call mnSurvey_Click Case "pause/start": Call mnpause_Click Case "save": Call mnsave_Click Case "print": Call mnprint_Click Case "offline": Call mnoffline_Click End Select End Sub How can I solve this error?

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• my jComboBox does not react to my keyListener and actionPerform perfroms weired stuff

  - by aladdin

  hi I am trying to search for UserName and return values onto jComboBox, here is the code public void actionPerformed(java.awt.event.ActionEvent e) { sr = new Search(((String) jComboBoxReceiver.getSelectedItem())); usrList = sr.searchUser(); String[] userList = new String[usrList.size()] ; for(int i=0;i<usrList.size();i++){ userList[i]= usrList.get(i).getUserName(); } model = new DefaultComboBoxModel(userList); jComboBoxReceiver.setModel(model); } However, if i do that, it does perform correctly, however, it will go search for the first item again, which is very confusing... then i tried using key Pressed if(e.getKeyCode()==13){ sr = new Search(((String) jComboBoxReceiver.getSelectedItem())); usrList = sr.searchUser(); String[] userList = new String[usrList.size()] ; for(int i=0;i<usrList.size();i++){ userList[i]= usrList.get(i).getUserName(); } model = new DefaultComboBoxModel(userList); jComboBoxReceiver.setModel(model); } And this one does not react at all ...

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• Visual studio deployment project error when writing to registry

  - by Rekreativc

  Hello I have a setup for an application that was recently converted to be a framework 4.0 project (don't know if it's relevant). The setup has to write to registry (Local Machine) and until now this has always worked perfectly, however now it fails to write to registry on a clean machine (running Windows 7, 64 bit). The setup does not fail, does not show a warning of any kind, however it does not write to the registry (I even set AlwaysCreate property to true on every key, just in case) which of course causes the application to terminate on startup. What could be the cause of this? I have never encountered such an error before. Edit: I have tried running the installer as administrator, didn't change anything.

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• How to make the arrows keys act as another keys ?

  - by le.shep20

  How to make the left arrow act like . (dot), when a user press the left arrow in a textbox it will type . and also in the same way how to make the right arrow act like - ( dash) And I want to use the Control key to switch between 2 modes: . and dash, regular arrows behavior, mean when a user press Control the tow arrows will act as . and dash. And when a user press agian the control the 2 arrows will act as usual arrows.

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• C++ Long switch statement or look up with a map?

  - by Rachel

  In my C++ application, I have some values that act as codes to represent other values. To translate the codes, I've been debating between using a switch statement or an stl map. The switch would look something like this: int code; int value; switch(code) { case 1: value = 10; break; case 2: value = 15; break; } The map would be an stl::map<int, int> and translation would be a simple lookup with the code used as the key value. Which one is better/more efficient/cleaner/accepted? Why?

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• In CouchDB, how to get documents limited on value in related document? In terms of SQL, how to make WHERE on JOINed table

  - by amorfis

  Crossposting from [email protected] Assume we have two kind of documents in CouchDB. Person and Car: Person: _id firstname surname position salary Car: _id person_id reg_number brand So there is one to many relationship. One person can have many cars. I can construct map function to get every person and his/her car next to each other. In such case key is array [person.id, 0] and [car.person_id, 1]. What I can't do, is limiting this view to owners of specific brand only, e.g. if I need salaries of owners of Ferrari.

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• MapReduce results seem limited to 100?

  - by user1813867

  I'm playing around with Map Reduce in MongoDB and python and I've run into a strange limitation. I'm just trying to count the number of "book" records. It works when there are less than 100 records but when it goes over 100 records the count resets for some reason. Here is my MR code and some sample outputs: var M = function () { book = this.book; emit(book, {count : 1}); } var R = function (key, values) { var sum = 0; values.forEach(function(x) { sum += 1; }); var result = { count : sum }; return result; } MR output when record count is 99: {u'_id': u'superiors', u'value': {u'count': 99}} MR output when record count is 101: {u'_id': u'superiors', u'value': {u'count': 2.0}} Any ideas?

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• STL map containing references does not compile

  - by MTsoul

  The following: std::map<int, ClassA &> test; gives: error C2101: '&' on constant While the following std::map<ClassA &, int> test; gives error C2528: '_First' : pointer to reference is illegal The latter seems like map cannot contain a reference for the key value, since it needs to instantiate the class sometimes and a reference cannot be instantiated without an object. But why does the first case not work?

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• What Visual C++ references are worth a look for a Java programmer looking to get up to speed?

  - by Terry V.

  I have a lot of experience with Java/OO. There are tons of C++ tutorials/references out there, but I was wondering if there are a few key ones that a Java programmer might find useful when making the transition. I will be moving from server-side J2EE to Windows Visual C++ desktop programming. I have googled and found tons of resources, but am overwhelmed and don't know where to best spend my time. I have only a few days to get a good start. Is Visual Studio Express / Microsoft Visual C++ the best IDE for me to start with? Also, any words of wisdom from others who know and work with both languages?

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• SELECT subset from two tables and LEFT JOIN results

  - by Doctor Trout

  Hi all, I'm trying to write a bit of SQL for SQLITE that will take a subset from two tables (TableA and TableB) and then perform a LEFT JOIN. This is what I've tried, but this produces the wrong result: Select * from TableA Left Join TableB using(key) where TableA.key2 = "xxxx" AND TableB.key3 = "yyyy" This ignore cases where key2="xxxx" but key3 != "yyyy". I want all the rows from TableA that match my criteria whether or not their corresponding value in TableB matches, but only those rows from TableB that match both conditions. I did manage to solve this by using a VIEW, but I'm sure there must be a better way of doing this. It's just beginning to drive me insane tryng to solve it now. (Thanks for any help, hope I've explained this well enough).

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• How to convert an Info.plist file from mac os project to iphone project?

  - by Tom Pace

  I am developing an app for the iPhone OS devices, and am using a third-party engine which is not well documented but I've made great progress with it anyway. The problem: The engine's developer strongly urges extending from the existing template projects bundled with the engine, but the engine's Info.plist files are Mac OSX project Info.plist files. This is an iPhone engine, and so I cannot understand why the Info.plist file is structured to take keys for Mac OS apps, but that's how it is. I did a FileMerge comparison to ensure there was nothing within the file itself that defined its use for one OS or the other, so I guess it's defined somewhere in the project settings. Edit - Opening the plist file in Xcode or Property List Editor and then trying to add a key such as "Icon already includes gloss and bevel effects" will not work in this iPhone project because it is not in the list. However, "Cocoa Java Application" and others are available!

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• Why can't I find DataTemplates in merged resource dictionaries?

  - by dthrasher

  In my MainWindow.xaml, I have the following reference to a ResourceDictionary: <Window.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="MainSkin.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Window.Resources> In MainSkin.xaml, I define a datatemplate: <DataTemplate x:Key="TagTemplate"> ... </DataTemplate> Deeper within my application, I attempt to use this data template: <ContentControl DataContext="{Binding Tag}" ContentTemplate="{StaticResource TagTemplate}"/> The code compiles successfully, but when I attempt to load a Page or UserControl that contains this StaticResource, I get an exception saying that the TagTemplate can't be found. What am I doing wrong?

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• Java document parsing over internet using POST

  - by Travis

  I've looked all around and decided to make my own library for accessing the EVE API. Requests are sent to a server address such as /account/Characters.xml.aspx. Characters.xml.aspx requires two item be submitted in POST and then it returns an XML file. So far I have this but it does not work, probably becuase I am using GET instead of POST: //Get the API data DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); String url = "http://api.eveonline.com/account/Characters.xml.aspx?userID="+ userID+"?apiKey="+key; Document doc = builder.parse(url); How would I go about being able to parst an XML file that is generated by submitting variables in POST?

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• A balanced binary search tree which is also a heap

  - by saeedn

  I'm looking for a data structure where each element in it has two keys. With one of them the structure is a BST and looking at the other one, data structure is a heap. With a little search, I found a structure called Treap. It uses the heap property with a random distribution on heap keys to make the BST balanced! What I want is a Balanced BST, which can be also a heap. The BST in Treap could be unbalanced if I insert elements with heap Key in the order of my choice. Is there such a data structure?

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• How to create an attached-property to change a resource's property?

  - by king.net

  I have a DrawingBrush as a resource like this: <DrawingBrush x:Key="Calendar" Stretch="Uniform"> <DrawingBrush.Drawing> <DrawingGroup> <DrawingGroup.Children> <GeometryDrawing Geometry="F1 M 28.0917,2.13333C 42.4005,2.13333 54,13.7329 54,28.0417C 54,42.3504 42.4004,53.95 28.0917,53.95C 13.7829,53.95 2.18334,42.3504 2.18334,28.0417C 2.18334,13.7329 13.7829,2.13333 28.0917,2.13333 Z "> <GeometryDrawing.Pen> <Pen Thickness="4" LineJoin="Round" Brush="#FF000000"/> </GeometryDrawing.Pen> </GeometryDrawing> <GeometryDrawing Geometry="F1 M 16.9667,16.7083L 39.7167,16.7083L 39.7167,41.625L 16.9667,41.625L 16.9667,16.7083 Z "> <GeometryDrawing.Pen> <Pen Thickness="2.66667" StartLineCap="Square" EndLineCap="Square" MiterLimit="2.75" Brush="#FF000000"/> </GeometryDrawing.Pen> </GeometryDrawing> <GeometryDrawing Brush="#FF000000" Geometry="F1 M 15.6333,15.9583L 40.7167,15.9583L 40.7167,25.2917L 15.6333,25.2917L 15.6333,15.9583 Z "/> <GeometryDrawing Brush="#FFFFFFFF" Geometry="F1 M 18.2167,11.9583L 22.9667,11.9583L 22.9667,20.875L 18.2167,20.875L 18.2167,11.9583 Z "> <GeometryDrawing.Pen> <Pen Thickness="1.33333" StartLineCap="Square" EndLineCap="Square" MiterLimit="2.75" Brush="#FF000000"/> </GeometryDrawing.Pen> </GeometryDrawing> <GeometryDrawing Brush="#FFFFFFFF" Geometry="F1 M 33.7167,11.925L 38.4667,11.925L 38.4667,20.8417L 33.7167,20.8417L 33.7167,11.925 Z "> <GeometryDrawing.Pen> <Pen Thickness="1.33333" StartLineCap="Square" EndLineCap="Square" MiterLimit="2.75" Brush="#FF000000"/> </GeometryDrawing.Pen> </GeometryDrawing> <GeometryDrawing Brush="#FF000000" Geometry="F1 M 28.0154,36.2658L 28.0154,37.4894L 21.6254,37.4894C 21.6169,37.1934 21.6615,36.908 21.7592,36.6333C 21.915,36.1815 22.165,35.7425 22.5091,35.3162C 22.8533,34.8899 23.3617,34.4091 24.0344,33.8738C 25.0782,32.983 25.776,32.295 26.1279,31.81C 26.4799,31.3249 26.6558,30.8551 26.6558,30.4005C 26.6558,29.9473 26.4894,29.5653 26.1566,29.2544C 25.8238,28.9435 25.3904,28.7881 24.8565,28.7881C 24.2915,28.7881 23.8393,28.9442 23.5001,29.2565C 23.161,29.5688 22.9892,30.0018 22.985,30.5556L 21.7614,30.4196C 21.8449,29.5345 22.1576,28.86 22.6993,28.3962C 23.241,27.9323 23.9686,27.7004 24.882,27.7004C 25.8054,27.7004 26.5358,27.9596 27.0733,28.4779C 27.6107,28.9963 27.8795,29.6385 27.8795,30.4047C 27.8795,30.7942 27.8065,31.1769 27.6607,31.5529C 27.5148,31.9289 27.2726,32.3251 26.9341,32.7415C 26.5957,33.1579 26.0115,33.7215 25.1816,34.4325C 24.4692,35.0216 24.0008,35.4214 23.7763,35.6317C 23.5518,35.842 23.3667,36.0533 23.2208,36.2658L 28.0154,36.2658 Z "/> <GeometryDrawing Brush="#FF000000" Geometry="F1 M 33.3178,37.4894L 33.3178,35.1781L 28.9671,35.1781L 28.9671,33.9545L 33.5897,27.8364L 34.5414,27.8364L 34.5414,33.9545L 35.765,33.9545L 35.765,35.1781L 34.5414,35.1781L 34.5414,37.4894L 33.3178,37.4894 Z M 33.3178,33.9545L 33.3178,30.1774L 30.4648,33.9545L 33.3178,33.9545 Z "/> </DrawingGroup.Children> </DrawingGroup> </DrawingBrush.Drawing> </DrawingBrush> And I can use it like this: <Rectangle Fill="{DynamicResource Calender}" /> Now, my question is: how can I create an attached-property to change all brushes on my resource? e.g. I be able to create this: <Rectangle Fill="{DynamicResource Calendar}" attached:IconHelper.Foreground="Blue" /> on my Rectangle and in my resource, I can get: <DrawingBrush x:Key="Calendar" Stretch="Uniform"> <DrawingBrush.Drawing> <DrawingGroup> <DrawingGroup.Children> <GeometryDrawing Geometry="blah blah"> <GeometryDrawing.Pen> <Pen Brush={attached:ReadItFromAboveRectangle}/> </GeometryDrawing.Pen> </GeometryDrawing> <GeometryDrawing Geometry="blah blah"> <GeometryDrawing.Pen> <Pen Brush={attached:ReadItFromAboveRectangle}/> </GeometryDrawing.Pen> <!-- etc... --> Is there any way to read an attached-property on Rectangle in Calendar resource? Or is there any other way to do this? Thanks in advance.

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• Reliably detect caller domain over cURL request?

  - by Utkanos

  OK so server-side security is not my forte. Basically, I'm building a service which users may use (via an SDK) only on the domain they stipulated when they signed up. The SDK calls my web service over cURL in PHP. Would I be right in thinking I cannot reliably detect the caller domain, i.e. enforce that it is the same domain they stipulated when signing up? cURL of course sends this over headers, but headers can always (?) be faked. Is there a better course of action to enforce domain for this sort of thing? (NB I'm already using an API key, too - it's just I wanted to restrict domain, too) Thanks in advance

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• How to use Map element as text of a JComboBox

  - by llm

  I am populating a JComboBox (using addItem()) with all the elements of a collection. Each element in the collection is a HashMap (so its a ComboBox of Hashmaps..). My question is - Given that I need each item to be a HashMap how do I set the text to apear in the combobox on the GUI? It needs to be the value of a certain key in the map. Normally if I am populating a combobox with my own type, I would just overide the toString() method...but I am not sure how to acheive this since I am using a Java HashMap. Any ideas (if possible, without implementing my own HashMap)? Update: It seems like there isn't anyway to avoid having the object int the JComboBox overide toString() if I want custom functionality..I wish there was a way to (1) specify the objects to be loaded into the JComboBox and (2) specify how these objects are to appear in the GUI.

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• How do you use jQuery .data() to store html?

  - by Al

  Hi all - when I look up the syntax for .data(), it gives examples like this: $('body').data('foo', 52); I am doing AJAX loads and I was wondering if it is possible to store the incoming html using .data() so once the content is loaded, I would not need to do another AJAX load if the same link is clicked again - I would check to see if the .data key is empty. Would something like this work?: To load the contents of a #ajaxdiv into storage: $('body').data('storage', div#ajaxdiv.html()); To test if the data has already been loaded: if $('body').data('storage') != '' { div#ajaxdiv.html($('body').data('storage')); } Thanks in advance!! Al

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• Rails editing multiple records at once

  - by Joseph Silvashy

  I feel like this might be really simple but I'm just not getting it right, so I have like a settings page in my app and I want each setting to be like a key value store, for example: +-------------------+--------------------------------+ | setting | value | +-------------------+--------------------------------+ | twitter_username | something | +-------------------+--------------------------------+ | facebook_url | http://facebook.com/someguy | +-------------------+--------------------------------+ My form looks something like this: <% form_tag set_admin_settings_path, :method => :put do %> <ol> <% for setting in @settings %> <li class="field"> <label><%= setting.setting_name.humanize %></label> <%= text_field_tag "[setting_value][]", setting.setting_value %> </li> <% end %> <li class="submit"> <%= submit_tag "Update settings" %> </li> </ol> <% end %> Everything renders fine but when I try to save the form, nothing is saved :(

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• spring mvc forward to jsp

  - by jerluc

  I currently have my web.xml configured to catch 404s and send them to my spring controller which will perform a search given the original URL request. The functionality is all there as far as the catch and search go, however the trouble begins to arise when I try to return a view. <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver" p:order="1"> <property name="mediaTypes"> <map> <entry key="json" value="application/json" /> <entry key="jsp" value="text/html" /> </map> </property> <property name="defaultContentType" value="application/json" /> <property name="favorPathExtension" value="true" /> <property name="viewResolvers"> <list> <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value="" /> </bean> </list> </property> <property name="defaultViews"> <list> <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" /> </list> </property> <property name="ignoreAcceptHeader" value="true" /> </bean> This is a snippet from my MVC config file. The problem lies in resolving the view's path to the /WEB-INF/jsp/ directory. Using a logger in my JBoss setup, I can see that when I test this search controller by going to a non-existent page, the following occurs: Server can't find the request Request is sent to 404 error page (in this case my search controller) Search controller performs search Search controller returns view name (for this illustration, we'll assume test.jsp is returned) Based off of server logger, I can see that org.springframework.web.servlet.view.JstlView is initialized once my search controller returns the view name (so I can assume it is being picked up correctly by the InternalResourceViewResolver) Server attempts to return content to browser resulting in a 404! A couple things confuse me about this: I'm not 100% sure why this isn't resolving when test.jsp clearly exists under the /WEB-INF/jsp/ directory. Even if there was some other problem, why would this result in a 404? Shouldn't a 404 error page that results in another 404 theoretically create an infinite loop? Thanks for any help or pointers! Controller class [incomplete]: @Controller public class SiteMapController { //-------------------------------------------------------------------------------------- @Autowired(required=true) private SearchService search; @Autowired(required=true) private CatalogService catalog; //-------------------------------------------------------------------------------------- @RequestMapping(value = "/sitemap", method = RequestMethod.GET) public String sitemap (HttpServletRequest request, HttpServletResponse response) { String forwardPath = ""; try { long startTime = System.nanoTime() / 1000000; String pathQuery = (String) request.getAttribute("javax.servlet.error.request_uri"); Scanner pathScanner = new Scanner(pathQuery).useDelimiter("\\/"); String context = pathScanner.next(); List<ProductLightDTO> results = new ArrayList<ProductLightDTO>(); StringBuilder query = new StringBuilder(); String currentValue; while (pathScanner.hasNext()) { currentValue = pathScanner.next().toLowerCase(); System.out.println(currentValue); if (query.length() > 0) query.append(" AND "); if (currentValue.contains("-")) { query.append("\""); query.append(currentValue.replace("-", " ")); query.append("\""); } else { query.append(currentValue + "*"); } } //results.addAll(this.doSearch(query.toString())); System.out.println("Request: " + pathQuery); System.out.println("Built Query:" + query.toString()); //System.out.println("Result size: " + results.size()); long totalTime = (System.nanoTime() / 1000000) - startTime; System.out.println("Total TTP: " + totalTime + "ms"); if (results == null || results.size() == 0) { forwardPath = "home.jsp"; } else if (results.size() == 1) { forwardPath = "product.jsp"; } else { forwardPath = "category.jsp"; } } catch (Exception ex) { System.err.println(ex); } System.out.println("Returning view: " + forwardPath); return forwardPath; } }

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• Oracle SQL Update query takes days to update

  - by B Senthil Kumar

  I am trying to update a record in the target table based on the record coming in from source. For instance, if the incoming record is present in the target table I would update them in the target else I would simply insert. I have over one million records in my source while my target has 46 million records. The target table is partitioned based on calendar key. I implement this whole logic using Informatica. I find that the Informatica code is perfectly fine looking at the Informatica session log but its in the update it takes long time (more than 5 days to update one million records). Any suggestions as to what can be done on the scenario to improve the performance?

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• Dynamically find the parameter to be passed as <T> to a generic method

  - by Codex

  A generic method is defined as follows: private static T GetComparisonObject<T>(ComparisonAttribute attribute, object objectToParse) { // Perform a some action return (T)resultObject; } The method is invoked as follows: var srcObjectToCompare = GetComparisonObject<DynamicType>(attributeToCompare, srcObject); The type for which the method needs to be invoked is configured in the config file as: <add attributename ="Count" attributetype ="MemberInformation" attributeparam ="Count" type="System.Int32" comparertype="ditCreditEMGTestAutomationDifferenceEngine.Comparers.TypeComparer, ditCreditEMGTestAutomationDifferenceEngine.dll" /> The token that is passed in < for the generic methods has to be the type for which the method is being invoked. From the type key configuration in the XML, an instance of Type represnting the type can be created{i.e. Type.GetType("System.Int32")}, but how can the Type Definition be generated which can then be passed to the the Generic method? Hope am not missing something elementary here!! :-O Thanks in advance.

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• Page-specific logic in Joomla

  - by Casebash

  I am trying to enable JavaScript in a Joomla template to behave differently depending on the page. In particular, I have set the Key Reference as that appears to be the most appropriate value I could find for this purpose. Unfortunately, I can't seem to access it in my code. I tried: $this->params->get("keyref") and a few other variations, but they simply returned a blank. How can I retrieve this value or is there a better way of writing page specific logic. Related Articles Joomla load script in a specific page: This would work, but seems like overkill for what I want to do here.

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