Search Results

Search found 23484 results on 940 pages for 'evidence based'.

Page 85/940 | < Previous Page | 81 82 83 84 85 86 87 88 89 90 91 92  | Next Page >

  • Anonymous types based in Interface

    - by Bhaskar
    Can I create anonymous implementations of an interface , in a way similar to the way delegate() { // type impl here , but not implementing any interface} Something on the lines of new IInterface() { // interface methods impl here } The situations where I see them to be useful are for specifying method parameters which are interface types, and where creating a class type is too much code. For example , consider like this : public void RunTest() { Cleanup(delegate() { return "hello from anonymous type"; }); } private void Cleanup(GetString obj) { Console.WriteLine("str from delegate " + obj()); } delegate string GetString(); how would this be achieved if in the above code , the method Cleanup had an interface as a parameter , without writing a class definition ? ( I think Java allows expressions like new Interface() ... )

    Read the article

  • What does the "build-essential" Terminal command mean & do in Linux based operating systems like Ubu

    - by Adam Siddhi
    Hi. I am researching how to install Ruby 1.9.1 in Xubuntu 10.04 and I came across the command build-essential multiple times. Sometimes it is followed by packages and sometimes it is both preceded and post-ceded by packages. The 2 examples I am looking at are: sudo apt-get install build-essential zlib1g zlib1g-dev zlibc libruby1.9 libxml2 libxml2-dev libxslt-dev and sudo apt-get install ruby irb ri rdoc ruby1.8-dev libzlib-ruby libyaml-ruby libreadline-ruby libncurses-ruby libcurses-ruby libruby libruby-extras libfcgi-ruby1.8 build-essential libopenssl-ruby libdbm-ruby libdbi-ruby libdbd-sqlite3-ruby sqlite3 libsqlite3-dev libsqlite3-ruby libxml-ruby libxml2-dev Thanks :adam

    Read the article

  • Firefox 17 and CSS borders based triangles = crap

    - by Adeher
    Like many front-end devs, I've been using the border trick to render triangles in CSS. http://apps.eky.hk/css-triangle-generator/ this generator helps with the technique. Today, like every week (almost), the Firefox team released a new version without any clear changelog on the rendering engine. Now we can see an ungraceful gray border around those triangles. I haven't found a trick to get rid of it yet. On top of that, before Firefox 17, when people were complaining about how aliased those triangles looked, an additional trick was to set the border-style property to "dashed" instead of solid. Using firebug on the triangle generator, you can quickly see how it shows up now, and cry yourself to death. I hope a more brillant front-end dev than myself will find a fix for this and share it here. Thanks

    Read the article

  • Mysql - Grouping the result based on a mathematical operation and SUM() function

    - by SpikETidE
    Hi all... I'm having the following two tables... Table : room_type type_id type_name no_of_rooms max_guests rate 1 Type 1 15 2 1254 2 Type 2 10 1 3025 Table : reservation reservation_id start_date end_date room_type booked_rooms 1 2010-04-12 2010-04-15 1 8 2 2010-04-12 2010-04-15 1 2 Now... I have this query SELECT type_id, type_name FROM room_type WHERE id NOT IN (SELECT room_type FROM reservation WHERE start_date >= '$start_date' AND end_date <= '$end_date') What the query does is it selects the rooms that are not booked between the start date and end date. Also, as you can see from the reservation table, we also have 'number of rooms booked between the two dates' factor also... I need to add this 'no.of booked rooms between the two dates' factor also in to the query... The query should return the type of rooms for which at least one room is free between the two dates. I worked out the logic but just can't represent it as a query....! How will you do this...? Thanks for your suggestions..!

    Read the article

  • Webcombo return error when trying to populate based on another WebCombo

    - by mattgcon
    I have a few webcombo boxes that are hierachial: Continent Country When the form loads everything works fine, when I change the continent the first time, the country repopulates correctly. However if I change the continent a second time I receive an error: Specified argument was out of the range of valid values.Parameter name: The DataValueField of ValueField was not found in the Columns collection. Can anyone tell me why? P.S. This is all I have in the Page_Load event if (!IsPostBack) { this.Load_AreaList(); this.Load_AreasOfInterest(); this.Load_Degrees(); this.Load_GenderList(); this.Load_ParticipationDateModifiers(); this.Load_ProgramCategories(nEventID); this.Load_YesNoList(); this.Load_ParticipantInformation(nParticipantID); }

    Read the article

  • increase a field value based on the radio button selection

    - by sts
    <% count = 1 % <% for question in @questions % <%=count%. <%= question.title if question.title% <% for response in @response % <% if response.question_id.eql?(question.id) % <%=radio_button(count, :voting, :count_modification) % <%= response.nomination % <% end % <% end % <% count += 1 % <% end % This is my whole code to implment the survey in views. if i give the count as third argument in radio button i cant select answer for each question. i can select only one answer for the whole survey.

    Read the article

  • Ask about the copyright of develop destop application based on web application

    - by Nano HE
    Hi, I googled and found some web online caculators (such as BodyFatCalculator & CaloricCalculator). I plan to develop the desktop Caculators in C#(WPF & .net 3.5). But I would test the online function and build my application module (I think some body properties not suit for asian people, maybe I still need do more research.). But now I must study others web app before my destop app design. Could I develop my app without the web application owner's permission? Thank you.

    Read the article

  • Web-based code interpreter

    - by detly
    I remember coming across a website where I could type in some code and it would compile and run it (or error out), displaying any console output. It accepted a variety of interpreted and non-interpreted languages — I specifically remember that I could use C (maybe Python too... I'm not completely sure). Does anyone know what site I'm talking about?

    Read the article

  • Android shared library which is not JNI based

    - by Mondain
    I am developing a library for Android applications which does not use native code (JNI). I have tried suppling the library as an external jar in my Android projects but this method does not include the library contents in the apk and thus throws class not found errors when run in the emulator or device. I have also tried creating the library as an Android project in itself and this does work, but only for public static properties (not methods). With the library and application both being in separate apk's I can see that the VM notices references to the library and can read some properties, but when an attempt to instantiate a class in the library is executed I get class not found even though I can read the public static properties from it (very frustrating!!). I realize that Davlik byte code is not the same as Java byte code but I am having trouble even finding good information about how to solve what would seem to be a very simple issue in Android. I am looking into the old PlatformLibrary stuff right now but I am not convinced this will work either since the sample has been removed from the Android site :( So help me out if you can, if I find the answer before this happens I will share it. viva la Android!

    Read the article

  • Create custom component based on LinearLayout, declaring layout in XML

    - by pheelicks
    I've been trying to create a Compound Control in Android 1.5 (as described here) but havn't been able to find any good examples on how to do this using an XML file to specify a layout. I'm fine with creating an Activity and then loading an xml file using the following in the constructor: setContentView(R.layout.main); However, I want to do this in subclass of LinearLayout - so I can use this compound component in other XML layouts. Something along the lines of: public class CustomView extends LinearLayout { public CustomView(Context context) { super(context); setupView(); } public CustomView(Context context, AttributeSet attrs) { super(context, attrs); setupView(); } public void setupView() { setContentView(R.layout.custom); // Not possible } } What is the correct way of going about doing this?

    Read the article

  • How to organise a php based website

    - by bsandrabr
    I am putting my php /mysql website up and this is my scenario The users are grouped into sites each site with their own unique database. There will be about 40 users per site. the two options I'm trying to decide between are have a central website running the php and directing the users off to their own database using sub domains for each user each with their own php in htdocs I dont even know if 2 is possible/stupid but if it was, would it make any difference to performance as they're all being run by the same server. Any other ideas/ advice much appreciated as I want to organise it the best way from the start

    Read the article

  • Creating a unique key based on file content in python

    - by Cawas
    I got many, many files to be uploaded to the server, and I just want a way to avoid duplicates. Thus, generating a unique and small key value from a big string seemed something that a checksum was intended to do, and hashing seemed like the evolution of that. So I was going to use hash md5 to do this. But then I read somewhere that "MD5 are not meant to be unique keys" and I thought that's really weird. What's the right way of doing this? edit: by the way, I took two sources to get to the following, which is how I'm currently doing it and it's working just fine, with Python 2.5: import hashlib def md5_from_file (fileName, block_size=2**14): md5 = hashlib.md5() f = open(fileName) while True: data = f.read(block_size) if not data: break md5.update(data) f.close() return md5.hexdigest()

    Read the article

  • Custom DataGridView column sort based on Value not Formatted value

    - by Dan Neely
    I have a custom DGV cell I'm using to display the contents of MyType objects. To control how they're being formatted I'm overriding the GetFormattedValue() and FormattedvalueType methods of DataGridViewTextBoxCell because in this case I don't want to use the default ToString() method. The problem is that when I do this the DGV is sorting the column by the string in FormattedValue instead of by Value. I'm not seeing a method I can override to change the sort behavior of the column. While I know I can, I don't want to have to write custom Sort mthods for the DGVs themselves because I'm using this in multiple DGV's.

    Read the article

  • Hibernate Communications Link Failure in Restlet-Hibernate Based Java application powered by MySQL

    - by Vatsala
    Let me describe my question - I have a Java application - Hibernate as the DB interfacing layer over MySQL. I get the communications link failure error in my application. The occurence of this error is a very specific case. I get this error , When I leave mysql server unattended for more than approximately 6 hours (i.e. when there are no queries issued to MySQL for more than approximately 6 hours). I am pasting a top 'exception' level description below, and adding a pastebin link for a detailed stacktrace description. javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Cannot open connection - Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection - Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - The last packet successfully received from the server was 1,274,868,181,212 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. - Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure - The last packet successfully received from the server was 1,274,868,181,212 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. - Caused by: java.net.ConnectException: Connection refused: connect the link to the pastebin for further investigation - http://pastebin.com/4KujAmgD What I understand from these exception statements is that MySQL is refusing to take in any connections after a period of idle/nil activity. I have been reading up a bit about this via google search, and came to know that one of the possible ways to overcome this is to set values for c3p0 properties as c3p0 comes bundled with Hibernate. Specifically, I read from here http://www.mchange.com/projects/c3p0/index.html that setting two properties idleConnectionTestPeriod and preferredTestQuery will solve this for me. But these values dont seem to have had an effect. Is this the correct approach to fixing this? If not, what is the right way to get over this? The following are related Communications Link Failure questions at stackoverflow.com, but I've not found a satisfactory answer in their answers. http://stackoverflow.com/questions/2121829/java-db-communications-link-failure http://stackoverflow.com/questions/298988/how-to-handle-communication-link-failure Note 1 - i dont get this error when I am using my application continuosly. Note 2 - I use JPA with Hibernate and hence my hibernate.dialect,etc hibernate properties reside within the persistence.xml in the META-INF folder (does that prevent the c3p0 properties from working?)

    Read the article

  • Build SUM based daily record

    - by ximarin
    I have a problem building an aggregate function. Here's my problem: I have a table like this id action day isSum difference 1 ping 2012-01-01 1 500 (this is the sum of the differences from last year) 2 ping 2012-01-01 0 -2 3 ping 2012-01-02 0 1 4 ping 2012-01-03 0 -4 5 ping 2012-01-04 0 -2 6 ping 2012-01-05 0 3 7 ping 2012-01-06 0 2 8 ping 2012-01-01 1 0 (this is the sum of the differences from last year, now for pong) 9 pong 2012-01-01 0 -5 10 pong 2012-01-02 0 2 11 pong 2012-01-03 0 -2 12 pong 2012-01-04 0 -8 13 pong 2012-01-05 0 3 14 pong 2012-01-06 0 4 I now need to select the action, day and the summarized difference since 01-01 for every day, so that my result looks like this action day total ping 2012-01-01 498 ping 2012-01-02 499 ping 2012-01-03 495 ping 2012-01-04 493 ping 2012-01-05 496 ping 2012-01-06 498 pong 2012-01-01 - 5 pong 2012-01-02 - 3 pong 2012-01-03 - 5 pong 2012-01-04 -13 pong 2012-01-05 -10 pong 2012-01-06 - 6 How can I do this? there a are a lot of datasets (~1 million), so the query needs to be pretty cheap. I don't know how the use sum to get daily sums for daily records depending on the action-column.

    Read the article

  • Hide/Show Text Field based on Selected value - ROR

    - by Tau
    I am new to ROR. I am trying to show a "Others" text field only if the selected value is "others". I am trying to make hide/show function to be as general as possible, since I will need it in many controller. If anyone can help enlightening me, I will really appreciate it. BTW, I am using Rails 2.1.1 ruby 1.8.7 general_info.html.erb <div> <%= f.label :location_id, "Location:" %> <%= f.collection_select(:location_id, Event.locations, :id, :name, {:prompt => true}, {:onchange => remote_function( :url => {:action => "showHideDOMOther"}, :with => "'selectedText='+this.options[this.selectedIndex].text + '&other_div='+'loc_other'")}) %> </div> <div id="loc_other" style="display:none"> <%= f.label :location_others, "Others:" %> <%= f.text_field :location_others %> </div> info_controller.rb def showHideDomOther render :update do |page| page.showHideDOM("Others", params[:selectedText], params[:other_div]) end end ... application_helper.rb def showHideDOM(targetString, selectedText, targetDiv) if selectedText.casecmp targetString page.hide targetDiv else page.show targetDiv end end Seem to get the correct parameters value, but nothing seems to happen. This is what I see from the console when I changed the value of selection to "Others". Parameters: {"action"=>"showHideDOMOther", "authenticity_token"=>"e7da7ce4631480b482e29da9c0fde4c026a7a70d", "other_div"=>"loc_other", "controller"=>"events", "selectedText"=>"Others"} NoMethodError (undefined method search_generic_view_paths?' for #<EventsController:0xa41c720>): /vendor/plugins/active_scaffold/lib/extensions/generic_view_paths.rb:40:infind_template_extension_from_handler' C:/usr/lib/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_finder.rb:138:in pick_template_extension' C:/usr/lib/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_view/template_finder.rb:115:infile_exists?' : Rendering C:/usr/lib/Ruby/lib/ruby/gems/1.8/gems/actionpack-2.1.1/lib/action_controller/templates/rescues/layout.erb (internal_server_error)

    Read the article

  • C++ Mock/Test boost::asio::io_stream - based Asynch Handler

    - by rbellamy
    I've recently returned to C/C++ after years of C#. During those years I've found the value of Mocking and Unit testing. Finding resources for Mocks and Units tests in C# is trivial. WRT Mocking, not so much with C++. I would like some guidance on what others do to mock and test Asynch io_service handlers with boost. For instance, in C# I would use a MemoryStream to mock an IO.Stream, and am assuming this is the path I should take here. C++ Mock/Test best practices boost::asio::io_service Mock/Test best practices C++ Async Handler Mock/Test best practices I've started the process with googlemock and googletest.

    Read the article

  • Resizing an iframe based on content

    - by larssg
    I am working on an iGoogle-like application. Content from other applications (on other domains) is shown using iframes. How do I resize the iframes to fit the height of the iframes' content? I've tried to decipher the javascript Google uses but it's obfuscated, and searching the web has been fruitless so far. Update: Please note that content is loaded from other domains, so the same-origin policy applies.

    Read the article

  • Rails: Routing to a different controller based on request format

    - by Jimmy Cuadra
    I'm writing an app where I want all requests for HTML to be handled by the same controller action. I have some other routes that are JSON-specific. Here's what my routes look like: Blog::Application.routes.draw do constraints format: :json do resources :posts end match "(*path)" => "web#index" end The problem is that constraints is being interpreted as "this route only works with the specified format" rather than "skip this route and try the next one if the request is not in the specified format." In other words, navigating to /posts in the browser gives me a 406 Not Acceptable because the URL is constrained to the JSON format. Instead, I want it to fall through to web#index if the request is for HTML, and hit the resourceful route if the request is for JSON. How can this be achieved? (Using Rails 3.2.9.)

    Read the article

  • How to make DropDownList automatically be selected based on the Label.Text

    - by Archana B.R
    I have a DropDownlist in the GridView, which should be visible only when edit is clicked. I have bound the DropDownList from code behind. When I click on Edit, the label value of that cell should automatically get selected in the DropDownList. The code I have tried is: protected void GridView3_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { SqlCommand cmd = new SqlCommand("SELECT Location_Name FROM Location_Table"); DropDownList bind_drop = (e.Row.FindControl("DropList") as DropDownList); bind_drop.DataSource = this.ExecuteQuery(cmd, "SELECT"); bind_drop.DataTextField = "Location_Name"; bind_drop.DataValueField = "Location_Name"; bind_drop.DataBind(); string Loc_type = (e.Row.FindControl("id2") as Label).Text.Trim(); bind_drop.Items.FindByValue(Loc_type).Selected = true; } } When I run the code, it gives an exception error Object reference not set in the last line of the above code. Cannot find out whats wrong. Kindly help

    Read the article

  • Wanna use StructureMap to store HttpContext/User based explicit instances

    - by René
    Hi I'm having difficulty figuring out how to store an explicitly user generated instance in StructureMap, cached by HttpContext. When I try the code underneath, I even get the first cached instance, which leads to failures when using it for storing user credentials in Asp.Net AuthenticateRequest method. ForRequestedType<TInterface>() .CacheBy(InstanceScope.HttpContext) .TheDefault. Is. Object(instance)); The problem is I can't create a new instance on requesting StructureMap, because I need more other factories for getting rights etc. for the current user. Any ideas?

    Read the article

  • Jquery Find an XML element based on the value of one of it's children

    - by NateD
    I'm working on a simple XML phonebook app to learn JQuery, and I can't figure out how to do something like this: When the user enters the first name of a contact in a textbox I want to find the entire record of that person. The XML looks like this: <phonebook> <person> <number> 555-5555</number> <first_name>Evelyn</first_name> <last_name>Remington</last_name> <address>Edge of the Abyss</address> <image>path/to/image</image> </person> <person> <number>+34 1 6444 333 2223230</number> <first_name>Max</first_name> <last_name>Muscle</last_name> <address>Mining Belt</address> <image>path/to/image</image> </person> </phonebook> and the best I've been able to do with the jQuery is something like this: var myXML; function searchXML(){ $.ajax({ type:"GET", url: "phonebook.xml", dataType: "xml", success: function(xml){myXML = $("xml").find("#firstNameBox").val())} }); } What I want it to do is return the entire <person> element so I can iterate through and display all that person's information. Any help would be appreciated.

    Read the article

  • Trying to create an image list based on what is defined as the order, and loosing

    - by user1691463
    I have a custom created module for Joomla 2.5 and within the params of the module, and have a loop that is not outputting as expected. I have the following parameters (fields) int he module: Order Thumb image Image Title Full-size image Now there are 10 sets of these group of 4 params. What I am trying to do is loop through each of the object sets, 10 of them, and on each iteration, build an HTML image list structure. The if statement is building the HTML structure for the sets that have an order value that is greater than 0, and the else is creating the html for those sets that do not have a value greater that 0. The goal is to create two variables and then concatenate the the strings together; the leading set are the sets that have an order defined. This is not happening and every thrid loop seems like it is missing. Here is the order as it is set in the 10 sets Set 1 = 0 Set 2 = 4 Set 3 = 1 Set 4 = 0 Set 5 = 5 Set 6 = 0 Set 7 = 0 Set 8 = 6 Set 9 = 3 Set 10 = 9 However, the outcomes is: 9 5 1 4 6 7 10 Instead of the expected: 3 9 2 5 8 1 (below here are those sets that were not greater than 0 in order of appearance) 4 6 7 whats wrong here that I can not see <?php for ($i = 1; $i <= 10; $i++) { $order = $params->get('order'.$i);#get order for main loop of 10 $active = ""; if ($order > 0) {#Check if greater than 0 for ($n = 1; $n <= 10; $n++) {#loop through all order fields looking and build html lowest to highest; $ordercheck =$params->get('order'.$n); if ($ordercheck == $i) { $img = $params->get('image'.$n); $fimage = $params->get('image'.$n.'fullimage'); $title = $params->get('image'.$n.'alttext'); $active = ""; $active = $active . '<li>'; $active = $active . '<a href="'.$fimage.'" rel="prettyPhoto[gallery1]" title="'.$title.'">'; $active = $active . '<img src="'.$img.'" alt="'.$title.'" />'; $active = $active . '</a>'; $active = $active . '</li>'; $leading = $leading . $active; } } } else { #if the itteration $order was not greater than 0, build in order of accourance $img = $params->get('image'.$i); $fimage = $params->get('image'.$i.'fullimage'); $title = $params->get('image'.$i.'alttext'); $active = $active . '<li>'; $active = $active . '<a href="'.$fimage.'" rel="prettyPhoto[gallery1]" title="'.$title.'">'; $active = $active . '<img src="'.$img.'" alt="'.$title.'" />'; $active = $active . '</a></li>'; $unordered = $unordered . $active; } $imagesList = $leading . $unordered; } ?>

    Read the article

< Previous Page | 81 82 83 84 85 86 87 88 89 90 91 92  | Next Page >