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  • What does: throw 0 do/mean? Is it "bad"?

    - by MartinP
    Context I came across some code, like this: if( Some_Condition ) throw 0; I googled a bit, and found a few other code snippets using that odd looking throw 0 form. I presume one would catch this as: catch(const int& e) { } Or is this a NULL ptr? to be caught as void* ? Question What does this throw 0 do? Is it special in some way? My normal preference would be to throw something that is (or derived from) std::exception. So to me this looks "bad". Is it "bad" ?

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  • Set value in controller using nested resource

    - by vectran
    I have two models, product and order. Product - cost - id Order - cost - product_id Each time someone places an order, it captures the product_id through a radio button value in the "new order" form. In the controller when creating the new order it needs to set order.cost to order.product.cost. Logically I thought the code should be something like this: def create ... @order.cost == @order.product.cost ... end However I can't seem to make it work at all, hence me asking the question here. Any help is answering (or naming) the question would be greatly appreciated.

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  • Need to determine if ELMAH is logging an unhandled exception or one raised by ErrorSignal.Raise()

    - by Ronnie Overby
    I am using the Elmah Logged event in my Global.asax file to transfer users to a feedback form when an unhandled exception occurs. Sometimes I log other handled exceptions. For example: ErrorSignal.FromCurrentContext().Raise(new System.ApplicationException("Program code not found: " + Student.MostRecentApplication.ProgramCode)); // more code that should execute after logging this exception The problem I am having is that the Logged event gets fired for both unhandled and these handled, raised exceptions. Is there a way to determine, in the Logged event handler, whether the exception was raised via ErrorSignal class or was simply unhandled? Are there other Elmah events that I can take advantage of?

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  • ASP.Net MVC 2 Forms Authentication cookieless = "UseUri" while submit authorization fails

    - by rintoantony
    hi, I just started working with ASP.Net MVC 2. I created a new ASP.Net MVC application and created one vehicle controler with a database table connected with LINQ. Then created forms authentication mechanism for the application and tried to use the uri instead of cookies it was working smoothly but when i submit the form by creating a "Create" view from the controler using the utility it just dont work. The autherization got failed and asking to enter the user name and password again.I had created the authorization mechanism by adding Authorise attribute to the Controller so as to get authorized for all the actions. namespace MVCNEW.Controllers { [Authorize] public class VehicleController : Controller { But if i use the cookies instead of uri it works fine. Thanks in advance...

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  • Fast rectangle to rectangle intersection

    - by Jeremy Rudd
    What's a fast way to test if 2 rectangles are intersecting? A search on the internet came up with this one-liner (WOOT!), but I don't understand how to write it in Javascript, it seems to be written in an ancient form of C++. struct { LONG left; LONG top; LONG right; LONG bottom; } RECT; bool IntersectRect(const RECT * r1, const RECT * r2) { return ! ( r2->left > r1->right || r2->right left || r2->top > r1->bottom || r2->bottom top ); }

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  • Adding value to an Input field on click

    - by Wazdesign
    I have this structure on form, <input type="test" value="" id="username" /> <span class="input-value">John Smith</span> <a href="#" class="fill-input">Fill Input</a> when user click on the Fill Input , the data from span which has class input-value will be added to value, after clicking a tag the code should be look like this, <input type="test" value="john Smith" id="username" /> <span class="input-value">John Smith</span> <a href="#" class="fill-input">Fill Input</a> there are many forms element/input on the single page.

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  • Get the caret position when losing focus in WPF

    - by DrLazer
    I have two textbox's. I have an event setup for the "onLostFocus" of the textbox's. If i finish typing a word into both boxes one after the other all is well. At the point where i click back on the first textbox i want to click halfway through the word (perfectly resonable thing for a user to do). When the onLostFocus event fires here is my code : void tbox_LostFocus(object sender, RoutedEventArgs e) { IInputElement focusedelement = FocusManager.GetFocusedElement(this); if (focusedelement is TextBox) { TextBox focusedTextBox = focusedelement as TextBox; int focusIndex = m_commandsStacker.Children.IndexOf(focusedTextBox); int caretIndex = focusedTextBox.CaretIndex; The caret index is 0. At that point I refresh the whole form and set parameters and all other kinds of whizzery, storing the texbox index and caret position to put everything back the same. Why does it return 0 and not the position where the caret should be halfway between the word?

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  • JavaScript data formatting/pretty printer

    - by Dan
    I'm trying to find a way to 'pretty print' a JavaScript data structure in a human-readable form for debugging. I have a rather big and complicated data structure being stored in JS and I need to write some code to manipulate it. In order to work out what I'm doing and where I'm going wrong, what I really need is to be able to see the data structure in its entirety, and update it whenever I make changes through the UI. All of this stuff I can handle myself, apart from finding a nice way to dump a JavaScript data structure to a human-readable string. JSON would do, but it really needs to be nicely formatted and indented. I'd usually use Firebug's excellent DOM dumping stuff for this, but I really need to be able to see the entire structure at once, which doesn't seem to be possible in Firebug. Any suggestions welcome, thanks in advance.

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  • MySQL SET and ENUM types in CakePHP framework

    - by Andrew Bashtannik
    Hi! I need to use SET and ENUM types in my CakePHP 1.3 project. I found some advices, but all them are too old (2004-2006) and full of crazy methods, like modifying cake's core files. Also, CakePHP developers said that SET and ENUM types are not supported. Example: I have SET('alpha','beta') field, and I need to use this data as checkboxes in add & edit actions. Is there any way to add normal support (Form helpers etc.) of SET and ENUM fields?

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  • Django | Save model's choice list values

    - by MMRUser
    I have a form that has a choice list: <select name="cellSerpro" id="idcellserpro" class="field text" > <option value="">---</option> <option value="option1">Verizon</option> <option value="option2">AT&T</option> <option value="option3">T-Mobile</option> <option value="option4">Sprint</option> </select> So how do I get the selected value of it from the Django's model class in order to save it in the database, I have search through the net but couldn't find any way of doing it.. Thanks..

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  • WCF passing data types

    - by Jonathan D
    writing a WCF soap server which is going to be working with a flex client. what the best way of passing the result of a sql select statement? with pro's and con's would be good :D I know I can define data contracts, however defining lots of these for every sql statment is going to take a long time. i'm doing this with SQL server 2000, VS2010 and flex sdk 3/4. apart form that there isn't really that many other requirements that couldn't be moved at present. Thanks for the help

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  • Programming advice - Which Loops?

    - by GaxZE
    Theres no easy way to say this so ill just say it in the form of a story. Im looking for advice on which loops and where. Here goes: out of 200-odd fields in the database, i need to run the following against each field. extract allowed values using extract function place allowed values into an array loop the array to be inserted into a db table first check records dont already exist. if they dont exist insert into table. ive found myself playing with this for the past two days and getting tangled and tangled in loops. wondering if anybody can guide.

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  • Is there a practical alternative to struct inheritance? (C#)

    - by Tim Coulter
    I am writing code that will populate the Margin, Padding and BorderThickness properties of classes in the System.Windows.Documents namespace. Each of these properties accepts a value in the form of a System.Windows.Thickness, which is a struct. However, I wish to associate some additional data with each of these property assignments, which may subsequently be retrieved by my code. If Thickness were a class, I would inherit from it and define properties in the subclass to store my additional data items. But since it is a struct, inheritance is not possible. Is there any practical way to achieve this, while maintaining type-compatibility with the properties I am populating? Thanks for your ideas, Tim

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  • Drawing Directed Acyclic Graphs: Minimizing edge crossing?

    - by Robert Fraser
    Laying out the verticies in a DAG in a tree form (i.e. verticies with no in-edges on top, verticies dependent only on those on the next level, etc.) is rather simple without graph drawing algorithms such as Efficient Sugimiya. However, is there a simple algorithm to do this that minimizes edge crossing? (For some graphs, it may be impossible to completely eliminate edge crossing.) A picture says a thousand words, so is there an algorithm that would suggest: instead of: EDIT: As the picture suggests, a vertex's inputs are always on top and outputs are always below, which is another barrier to just pasting in an existing layout algorithm.

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  • ASP.NET Canceling the Default Submit Button

    - by Ryan Smith
    I have an ASP.NET application where there's a few ASP.NET buttons and several plain HTML buttons. Anytime there's a textbox where a user hits enter, the ASP.NET button trys to submit the form. I know I can change the defaultButton, but I don't want there to be any default button. I just want it so when the user presses enter it doesn't do anything. I've tried setting defaultButton to blank, but that doesn't seem to work and I can't seem to find the answer anywhere on the web. What's the code to make this happen? Thanks.

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  • How to delete VB code from an Excel sheet using C#?

    - by Bashir Magomedov
    Does anyone know how to delete all VB code form an Excel workbook using C#? This code doesn’t work. It removes first (last one) VBComponent, but rises ArgumentException on second one. VBProject project = workbook.VBProject; int componentsCount = project.VBComponents.Count; for (int i = componentsCount; i >= 1; i--) { VBComponent component = project.VBComponents.Item(i); project.VBComponents.Remove(component); } Any suggestions? :)

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  • Import CSV from url address and export as XML -- Rails

    - by Jeffrey
    Two questions: How can I import a file from a web address, without a form? Example: Organisation.import(:from = 'http://wufoo.com/report.csv') How can I use xml builder without pulling from the db? More Info My company uses wufoo for web forms. The data from wufoo is exported as csv files. To get the data into my company's cms, it needs to be formatted as xml. I don't need to store any of the data, aside from the url to the csv file. I thought this might work well as a simple rails app.

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  • calling webservice in java servlet

    - by Pravin
    I have created a servlet which displays a form having some fields and a submit button and also created a web service having methods which are needed in my servlet. I have deployed the web service on Tomcat 5.5.9/Axis and servlet web application on Tomcat ( same instance of Tomcat) using eclipse. Since one is web service and other is web application both are running on separate instances of tomcat, so when i run them separately i.e servlet without the call to web service and a client that access that webservice it works fine but when i integrate them both i get a error like exception: javax.servlet.ServletException I would like to call the web service and return the result when i press the button Please advice me on how to implement that.

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  • Cleanest way to tell if 3 times are within half an hour of each other

    - by niggles
    I have 3 date / time input boxes on a form and the user cannot select any times within half an hour of each other. I've converted all values to epoch format using a Javascript implementation of strtotime, but not sure how to recursively check that any of the times are actually half an hour apart. I can hand code all checks, but it would be cleaner to write a recursive function (especially if there were theoretically more than 3 time slots). Did some Google research but no luck. Any suggestions on implementing this in Javascript or Jquery. Thanks.

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  • What permissions are required to create a new work item type in TFS

    - by harsha
    I am new to creating work item types in TFS and want to create a new Work Item type. I looked at work item template option, but that is not sufficient for me. I need to add few new fields and have a customized form. From search I got information about Work Item Type definition but I am looking for some detailed example. Also I would like to know the permissions needed to add a new work item type. I got administrator privileges for my project, but not on TFS as a whole. With that can I add a new template for my project. Please provide me direction.

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  • Wordpress custom pages CMS

    - by all-R
    Hi guys, I'm considering Wordpress as my CMS platform for a client site I'm doing at the moment. However, I need to create a couple of custom 'modules'. One of these modules is a form that people will be able to complete and have a quote, and once submitted, in a special place in the Wordpress panel (like a menu or something), there will be a listing of all the submitted quotes (just fetching it from a table in my database). Another one is to manage a cafeteria menu, so the client can add a different meal to each day of the week. I know perfectly how to do this kind of things using some kind of MVC framework and doing it 'by-hand', but I'm just wondering if this would be possible to do with WP and if yes, what kind of tools I'll have to use. Thanks

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  • Can DBRefs contain additional fields?

    - by Soviut
    I've encountered several situations when using MongoDB that require the use of DBRefs. However, I'd also like to cache some fields from the referenced document in the DBRef itself. {$ref:'user', $id:'10285102912A', username:'Soviut'} For example, I may want to have the username available even though the user document is referenced. This would provide me all the benefits of a single document approach; Faster querying and eliminating the need to do manual dereferencing in my code. While at the same time allowing me to use references where they make sense. The idea being that when the referenced document is updated (a user changes their name, for example) my business layer can automatically update all the documents that reference it. Ultimately, I'm wondering if it's considered good form to store additional fields on my DBRefs? Will it break anything? Will I lose my data each time a reference is rewritten? Will drivers like pymongo support it?

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  • Zend + Pop Up's balloons on Server Problem

    - by LookUp Webmaster
    Dear Friends from Stackoverflow, Please help me with a problem that i'm having when uploading my project to the server. I'm using pop up's balloons (http://mckay.cshl.edu/balloons.html) for a project using Zend FW and it works fine on my localhost. (I'm using MAMP on MacOSX) but when I upload the webpage to the server, the text inside the balloons is displayed but the images that form the balloon are not, so somehow the js does not recognize the url to the images (the path it's correct, i've checked several times). The server is an Ubuntu 9.04 virtual machine from rackspace.com, running a LAMP server. I'm using the REWRITE function in Apache, so i guess maybe that's the problem. The rewrite configuration is set up using a .htaccess file with the following content: SetEnv APPLICATION_ENV development Options +FollowSymlinks RewriteEngine ON RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule !.(js|ico|txt|gif|jpg|png|css|html)$ index.php Does anyone knows what the problem might be? Best Regards,

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  • Nullables? Detecting them

    - by Aren B
    Ok, im still a bit new to using nullable types. I'm writing a reflecting object walker for a project of mine, im getting to the point where im setting the value of a reflected property with the value i've retrieved from a reflected property. The value i've retrieved is still in object form, and it dawned on me, since i want my object walker to return null when it can't find something, (I thought about throwing an exception, but i want this to soft-fail when something's wrong). Anyway, some of the values im setting/getting are decimal bool etc... so it dawned on me that i should just NOT set a non-nullable value, but I realized I straight up don't know how to tell decimal from decimal? Is it enough to key on if the Type of the property im setting is inherited from ValueType?

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  • How to get login password in servlets

    - by Dusk
    I've successfully implemented form based authentication, and now I want to get the username and password to initialize session object in javamail from servlets. How can I do that? I can getlogin username by using method request.getRemoteUser(), but I don't know how to get the password. If I create any session object like: authentication = new PasswordAuthentication(user,password); Properties props = new Properties(); props.put("mail.host", "localhost"); props.put("mail.debug",true); props.put("mail.store.protocol", "pop3"); props.put("mail.transport.protocol", "smtp"); Session session = Session.getInstance(props, this); then how can I get inbox messages from mail server based upon particular username and password, if I don't pass any password from servlets to PasswordAuthentication object?

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