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  • Why is one Func valid and the other (almost identical) not.

    - by runrunraygun
    private static Dictionary<Type, Func<string, object>> _parseActions = new Dictionary<Type, Func<string, object>> { { typeof(bool), value => {Convert.ToBoolean(value) ;}} }; The above gives an error Error 14 Not all code paths return a value in lambda expression of type 'System.Func<string,object>' However this below is ok. private static Dictionary<Type, Func<string, object>> _parseActions = new Dictionary<Type, Func<string, object>> { { typeof(bool), value => Convert.ToBoolean(value) } }; I don't understand the difference between the two. I thought the extra braces in example1 are to allow us to use multiple lines in the anon function so why have they affected the meaning of the code?

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  • Shadowbox not working in IE

    - by kielie
    Hi guys, I have a bit of a problem with my shadowbox, it works fine in FF, but it refuses to work in IE 7 or 8. I am using these scripts, <script type="text/javascript" src="scripts/jquery-1.4.2.js"</script> <link rel="stylesheet" type="text/css" href="scripts/shadowbox/shadowbox.css"> <script type="text/javascript" src="scripts/shadowbox/shadowbox.js"></script> <script type="text/javascript"> Shadowbox.init(); </script> and I am also using this jQuery to assign the rel attribute to all the a tags inside of my calendar, and it works fine in FF, but not at all in IE. $(function() { $('#wp-calendar').find('a').each( function() { $(this).attr( 'rel', 'shadowbox[Mixed];width=520;height=390'); }); }); but for some reason it just refuses to work in any IE. I really am at the end of my rope here, any help would be appreciated, thanx!

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  • Possible to write an Extension Method for ASP.NET's Html.ActionLink() method?

    - by Pretzel
    Right now, I'm trying to work around an IE6/7 bug which requires the wrapping of the </a closing tag with this IE specific comment to make some drop-down menu work: <!--[if IE 7]><!--></a><!--<![endif]--> Unfortunately, I cannot inject this directly into my View page code like this: <%= Html.ActionLink("LinkName<!--[if IE 7]><!--></a><!--<![endif]-->","Action","Controller") %> As Html.ActionLink will do the safe thing and filter out the comment to prevent a Javascript injection attack. Ok, cool. I'm fine with that. Good design decision. What I'd like to do is write an Extension Method to this, but the process is eluding me as I haven't done this before. I thought this would work, but Intellisense doesn't seem to be picking up this Extension method that I've written. public static class MyLinkExtensions { public static string ActionLinkIE(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName) { return LinkExtensions.ActionLink(htmlHelper, linkText, actionName, controllerName). Replace(@"</a>", @"<!--[if IE 7]><!--></a><!--<![endif]-->"); } } Any suggestions?

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  • Client-side or server-side processing?

    - by Nick
    So, I'm new to dynamic web design (my sites have been mostly static with some PHP), and I'm trying to learn the latest technologies in web development (which seems to be AJAX), and I was wondering, if you're transferring a lot of data, is it better to construct the page on the server and "push" it to the user, or is it better to "pull" the data needed and create the HTML around it on the clientside using JavaScript? More specifically, I'm using CodeIgniter as my PHP framework, and jQuery for JavaScript, and if I wanted to display a table of data to the user (dynamically), would it be better to format the HTML using CodeIgniter (create the tables, add CSS classes to elements, etc..), or would it be better to just serve the raw data using JSON and then build it into a table with jQuery? My intuition says to do it clientside, as it would save bandwidth and the page would probably load quicker with the new JavaScript optimizations all these browsers have now, however, then the site would break for someone not using JavaScript... Thanks for the help

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  • How to retrieve the file previews used by windows explorer in Windows vista and seven?

    - by user193655
    I am developing a Delphi documents management application, so somehow I am giving the user some functionality similar to windows explorer. I would like to know if there is a way to get the preview used by windows explorer. For example windows explorer creates a small thumbnail for a pdf document for example, and displays it when the user chooses to view "big icons". Is there a way to retrieve that preview? MyTImage := GiveMePreviewForFile('C:\Test\File.pdf');

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  • Load list of image from folder

    - by marc-andre menard
    I have a folder of images, from 10 to 200, a webpage, a jquery fade and a php script that read folder full of images Is there any way to make the php script scan a folder, get a list of image (in an array ?) and pass it to jquery script ? (first question) Now, i can make a xml file from the result php list of files found or make a html <li> from the list in the html. is there ANY other way to do that ? (question #2)

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  • PHP and JSON comment help..

    - by jay
    hi, guys thanks for looking my problem is that i cant seem to get jquery to display my generated data. here is my JSON output ("posts":[{"id":"1-2","time":"0","name":"dash","avatar":"http:\/\/www.gravatar.com\/avatar\/9ff30cc2646099e31a4ee4c0376091b0?s=182&d=identicon&r=PG","comment":"rtetretrete tet rt uh utert"},{"id":"2-2","time":"0","name":"james","avatar":"http:\/\/www.gravatar.com\/avatar\/d41d8cd98f00b204e9800998ecf8427e?s=182&d=identicon&r=PG","comment":"fsdfdfsdf\r\n"}]) and here is my jquery $(document).ready(function(){ var url="comments.php"; $.getJSON(url,function(json){ $.each(json.posts,function(i,post){ $("#content").append( '<div class="post">'+ '<h1>'+post.name+'</h1>'+ '<p>'+post.comment+'</p>'+ '<p>added: <em>'+post.time+'</em></p>'+ '<p>posted by: <strong>'+post.name+'</strong></p>'+ '<p>avatar: <strong>'+post.avatar+'</strong></p>'+ '</div>' ); }); }); });

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  • Multiple generic parameters on a html helper extension method

    - by WestDiscGolf
    What I'm trying to do is create an extension method for the HtmlHelper to create a specific output and associated details like TextBoxFor<. What I want to do is specify the property from the model class as per TextBoxFor<, then an associated controller action and other parameters. So far the signature of the method looks like: public static MvcHtmlString Create<TModel, TProperty, TController>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, Expression<Action<TController>> action, object htmlAttributes) where TController : Controller where TModel : class The issue occurs when I go to call it. In my view if I call it as per the TextBoxFor without specifying the Model type I am able to specify the lambda expression to set the property which it's for, but when I go to specify the action I am unable to. However, when I specify the controller type Html.Create<HomeController>( ... ) I am unable to specify the model property that the control is to be created for. I want to be able to call it like <%= Html.Create(x => x.Title, controller => controller.action, null) %> I've been hitting my head for a few hours now on this issue over the past day, can anyone point me in the right direction?

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  • incremental way of counting quantiles for large set of data

    - by Gacek
    I need to count the quantiles for a large set of data. Let's assume we can get the data only through some portions (i.e. one row of a large matrix). To count the Q3 quantile one need to get all the portions of the data and store it somewhere, then sort it and count the quantile: List<double> allData = new List<double>(); foreach(var row in matrix) // this is only example. In fact the portions of data are not rows of some matrix { allData.AddRange(row); } allData.Sort(); double p = 0.75*allData.Count; int idQ3 = (int)Math.Ceiling(p) - 1; double Q3 = allData[idQ3]; Now, I would like to find a way of counting this without storing the data in some separate variable. The best solution would be to count some parameters od mid-results for first row and then adjust it step by step for next rows. Note: These datasets are really big (ca 5000 elements in each row) The Q3 can be estimated, it doesn't have to be an exact value. I call the portions of data "rows", but they can have different leghts! Usually it varies not so much (+/- few hundred samples) but it varies! This question is similar to this one: http://stackoverflow.com/questions/1058813/on-line-iterator-algorithms-for-estimating-statistical-median-mode-skewness But I need to count quantiles. ALso there are few articles in this topic, i.e.: http://web.cs.wpi.edu/~hofri/medsel.pdf http://portal.acm.org/citation.cfm?id=347195&dl But before I would try to implement these, I wanted to ask you if there are maybe any other, qucker ways of counting the 0.25/0.75 quantiles?

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  • An analog of String.Join(string, string[]) for IEnumerable<T>

    - by abatishchev
    class String contains very useful method - String.Join(string, string[]). It creates a string from an array, separating each element of array with a symbol given. But general - it doesn't add a separator after the last element! I uses it for ASP.NET coding for separating with "<br />" or Environment.NewLine. So I want to add an empty row after each row in asp:Table. What method of IEnumerable<TableRow> can I use for the same functionality?

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  • fieldset form with Table-like layout with CSS?

    - by Scott B
    I have an application in which I'm currently using a two column table in order to get accurate cell alignment of the left column labels/descriptions with the right column form fields. I'd like to convert it to css and use jQuery to expand/collapse specific sections. I've seen some jQuery libraries, the menu.js in particular. And they appear to all use list items for the markup. I'm OK with converting my table to UL/LI structure if that's what I need to do. Just looking for some advice.

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  • Python: Hack to call a method on an object that isn't of its class

    - by cool-RR
    Assume you define a class, which has a method which does some complicated processing: class A(object): def my_method(self): # Some complicated processing is done here return self And now you want to use that method on some object from another class entirely. Like, you want to do A.my_method(7). This is what you'd get: TypeError: unbound method my_method() must be called with A instance as first argument (got int instance instead). Now, is there any possibility to hack things so you could call that method on 7? I'd want to avoid moving the function or rewriting it. (Note that the method's logic does depend on self.) One note: I know that some people will want to say, "You're doing it wrong! You're abusing Python! You shouldn't do it!" So yes, I know, this is a terrible terrible thing I want to do. I'm asking if someone knows how to do it, not how to preach to me that I shouldn't do it.

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  • set div position to fixed after scrolling 100px?

    - by user1481850
    I tried to use the following function in order to set the div's position to 100 px from top after scrolling 100 px. <script src="http://code.jquery.com/jquery-latest.js"></script> <script type="text/javascript"> $(window).scroll(function(){ $("#header").css("top",Math.max(0,100-$(this).scrollTop())); }); </script> <div class="header" style="position:fixed;top:100px;background-color:red">something</div> it is not working(the div stick to it's fixed position). it seems that the function is not relating to the div. what is my problem ?

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  • Jquuery Tabs Cookiess

    - by user342391
    I am trying to use the Jquery cookie plugin to remember the last selected tab. I can't seem to get it to work.Do i need anything else apart from the jquery lib and cookie plugin??? This is the code: <script type="text/javascript"> $(document).ready(function() { $("#tabletabscampaigns > ul").tabs({ remote: true, cache: true }); $("#tabletabscampaigns").tabs({selected: 0, cookie: { expires: 30} }); }); </script> <div id="tabletabscampaigns" style="float:left; width:895px; margin-top:20px;">

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  • sending and receiving with sockets in java?

    - by Darksole
    I am working on sending and receiving from clients and servers in java, and am stumped at the moment. the client socket is to contact a server at “localhost” port 4321. The client will receive a string from the server and alternate spelling the contents of this string with the server. For example, given the string “Bye Bye”, the client (which always begins sending the first letter) sends “B”, receives “y”, sends “e”, receives “ ”, sends “B”, receives “y”, sends “e”, and receives “done!”, which is the string that either client or server will send after the last letter from the original string is received. After “done!” is transmitted, both client and server close their communications. How would i go about getting the first string and then going back and forth sending and reciving letters that make the string, and when finished either send or get done!? import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintWriter; import java.net.Socket; import java.net.UnknownHostException; import java.util.Scanner; public class Program2 { public static void goClient() throws UnknownHostException, IOException{ String server = "localhost"; int port = 4321; Socket socket = new Socket(server, port); InputStream inStream = socket.getInputStream(); OutputStream outStream = socket.getOutputStream(); Scanner in = new Scanner(inStream); PrintWriter out = new PrintWriter(outStream, true); String rec = ""; if(in.hasNext()){ rec = in.nextLine(); } char[] array = new char[rec.length()]; for(int i = 0; i < rec.length(); i++){ array[i] = rec.charAt(i); } while(in.hasNext()){ for(int x = 0; x < array.length + 1; x+=2){ String str = in.nextLine(); str = Character.toString(array[x]); out.println(str); } in.close(); socket.close(); } } }

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  • How to find what ActiveX control is referred on a web page?

    - by Sly
    I have developed a web application (ASP.NET Web Forms). One of my customer has very restrictive policies. When he accesses the web page, IE shows this message: Your security settings do not allow Web sites to use ActiveX controls installed on your computer. This page may not display correctly. As far as I know, we don't use ActiveX controls on our page. I did a "View Souce" and did not find anything suspect. How can I find what part of my page refers to an ActiveX. The application uses jQuery and a few jQuery plug-ins. Is there a tool/add-in like "Fire Bug" that I can use to list the ActiveX controls referred on a page?

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  • Call a dynamically generated method on a ILGenerator on the same type

    - by Thiado de Arruda
    Normally, when I want to call a dynamic method in another ILGenerator object that is writing a method on the same type I do the following : generator.Emit(OpCodes.Ldarg_0); // reference to the current object generator.Emit(OpCodes.Ldstr, "someArgument"); generator.Emit(OpCodes.Call, methodBuilder); //this methodbuilder is also defined on this dynamic type. However, I faced the following problem: I cant have a reference to the methodbuilder of the method I want to call, because it is generated by another framework(I only get a reference to the current TypeBuilder). This method is defined as protected virtual(and overriden on the methodbuilder I cant get a reference to) in the base class of the current dynamic type and I can get a reference to it by doing this : generator.Emit(OpCodes.Ldarg_0); // reference to the current object generator.Emit(OpCodes.Ldstr, "someArgument"); generator.Emit(OpCodes.Call, baseType.GetMethod("SomeMethodDefinedInBaseClassThatWasOverridenInThisDynamicType")); The problem is that this calls the method on the base type and not the overriden method. Is there any way I can get a reference to a methodbuilder only having a reference to the typebuilder that defined it? Or is there a way to call a method using ILGenerator without having to pass the 'MethodInfo' object to it?

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  • Auto save changed text in richtextbox to database

    - by user2519407
    I have created one simple note taking application in jquery & php. Current functionality is like when user clicks save button it sends a ajax request with complete data to update it in db(mysql). All works well. But now I want to auto save only changed text while user typing. I don't want to send entire text to server again and again in text change event. It should send only text which has changed. For Ex: This is saved text. When user continues typing. This is saved text. Unsaved text.. It should be able to send only "Unsaved text.." to server to update in db. How can i implement this in jquery & server side script.? Any Idea..?

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  • Ruby on Rails with_option cannot call class method

    - by Dmitri
    I have a problem calling class method from the with_option block with validations: Model: class Model < ActiveRecord::Base attr_accessible :field with_options :if => "<not important>" do |step| ... bunch of validations step.validates :field, :inclusion => {:within => Model.field} end private self.field (1..10) end end And it returns: undefined method `field' for #Class:0x5f394a8 self.class.field also doesn't work. What is wrong with it ? How to fix it ? Big big thanks!

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  • How to retrieve the file icons and file previews used by windows explorer?

    - by user193655
    I am developing a Delphi documents management application, so somehow I am giving the user some functionality similar to windows explorer. Currently I am using imagelists where I manually maintain the icons (like one for pdf, one for xls, ...) and when I need to display an icon for a filetype that I don't explicitly support I have a generic icon. Is there a way to retrieve the icon used by windows, like MyTImage := GiveMeDefaultIconForExtension('pdf'); In Vista and Seven this should be an icon with multiple resolutions I think. Moreover I would like to know if there is a way to get the preview used by windows explorer. For example windows explorer creates a small thumbnail for a pdf document for example, and displays it when the user chooses to view "big icons". Is there a way to retrieve that preview? MyTImage := GiveMePreviewForFile('C:\Test\File.pdf');

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  • Ajax method call

    - by LooDaFunk
    Hi, I am trying to call a simple method in my code behind using Jquery with Ajax. But I get a 404 not found exception everytime. Unfortunately this is a web forms solution. So I dont have all the perks of MVC :( It does get into the javascript method and gives the alert but won't go into my c# method. My previous experience of using this Jquery method is in an MVC website. Is it compatible with webforms sites? Here is the code: http://pastebin.com/Xdey4XTS Thanks Merry Christmas!

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  • Objective-C method not being called

    - by Matt S.
    It's either because of the fact I'm tired or because I'm doing it wrong, but for some reason I can't get it to call a method. Here's what I'm trying to call: -(void)newHighScore:(int)d Which right now just does an NSLog saying "yea I'm working!" I'm calling it like this: [highscore newHighScore:score]; highscore is what I called the HighScore class in the .h, and score is an int with the score.

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  • Will my LinqToSql execution be deffered if i filter with IEnumerable<T> instead of IQueryable<T>?

    - by cottsak
    I have been using these common EntityObjectFilters as a "pipes and filters" way to query from a collection a particular item with an ID: public static class EntityObjectFilters { public static T WithID<T>(this IQueryable<T> qry, int ID) where T : IEntityObject { return qry.SingleOrDefault<T>(item => item.ID == ID); } public static T WithID<T>(this IList<T> list, int ID) where T : IEntityObject { return list.SingleOrDefault<T>(item => item.ID == ID); } } ..but i wondered to myself: "can i make this simpler by just creating an extension for all IEnumerable<T> types"? So i came up with this: public static class EntityObjectFilters { public static T WithID<T>(this IEnumerable<T> qry, int ID) where T : IEntityObject { return qry.SingleOrDefault<T>(item => item.ID == ID); } } Now while this appears to yield the same result, i want to know that when applied to IQueryable<T>s will the expression tree be passed to LinqToSql for evaluating as SQL code or will my qry be evaluated in it's entirety first, then iterated with Funcs? I'm suspecting that (as per Richard's answer) the latter will be true which is obviously what i don't want. I want the same result, but the added benefit of the delayed SQL execution for IQueryable<T>s. Can someone confirm for me what will actually happen and provide simple explanation as to how it would work?

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  • PHP Class Question

    - by Jerry
    Hi all I am trying to build a PHP class to check the username and password in MySql. I am getting "mysql_query(): supplied argument is not a valid MySQL-Link resource in D:\2010Portfolio\football\main.php on line 38" database has errors:" message. When I move my userQuery code out of my Class, it works fine. Only if it is inside my Class. I am not sure if the problem is that I don't build the connection to mysql inside my Class or not. Thanks for any helps!! Here is my code <?php $userName=$_POST['userName']; $userPw=$_POST['password']; class checkUsers { public $userName; public $userPw; function checkUsers($userName='', $userPw=''){ $this->userName=$userName; $this->userPw=$userPw; } function check1(){ if (empty($this->userName) || empty($this->userPw)){ $message="<strong>Please Enter Username and Password</strong>"; }else{ //line 38 is next line $userQuery=mysql_query("SELECT userName, userPw FROM user WHERE userName='$this->userName' and userPw='$this->userPw'", $connection); if (!$userQuery){ die("database has errors: ". mysql_error()); } if(mysql_num_rows($userQuery)==0){ $message="Please enter valid username and password"; } }//end empty check return $message; }//end check1 method }//end Class $checkUser=new checkUsers($userName, $userPw); echo $checkUser->check1(); ?> I appreciate any helps!!!!

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  • Why MyModel.all works in Rails ?

    - by AntonAL
    Hi, i don't understand this little thing: Suppose, we have "Person" model class Person < ActiveRecord::Base end Why Person.all works ? Person.all.each { |p| do_something } This syntax tells us, that we have Person class-object instanciated somewhere ? Or is it some convention over configuration case ?

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