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• Testing install procedure of a program requiring administrative privileges

  - by Lucas Meijer

  I'm trying to write automated test, to ensure that the installer for my program works okay. The program can be installed for all users (requires admin privs), or for current user (does not require admin privs). The program can also autoupdate itself, which in some cases requires admin privileges, and in some cases doesn't. I'm looking for a way where I can have an automated test click "Yes, Allow" on the UAC dialogs, so I can write tests for all different scenarios, on many different operating systems, so that I can be confident when I make changes to the installer that I didn't break anything. Obviously, the installer process itself cannot do this. However, I control the complete machine, and could easily start some sort of daemon process with administrative rights, that the testprogram could make a socket connection to, to request it to "please click ok on the UAC now".

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• Building static nav in concrete5

  - by hollyb

  I've inherited a site built with the CMS concrete5. I'm just starting to dissect it but was hit with a wicked short deadline on a complete overhaul to the nav. So, I want to build out a static nav and then go back when I have more time and integrate it with the auto-nav. Does anybody have experience working with concrete5? If so: Where would I drop my custom static nav? Is it possible to select it from the admin (so that the current one is still available if the client wants to switch back via the admin)? Thanks!

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• jQuery Tabs - Following External Links

  - by Ricky

  I have jQuery Tabs setup, but am trying to get a Tab to follow an external link. I have tried to use the code from jQuery, but the URL still loads via Ajax instead of redirecting the browser to the url: http://jqueryui.com/demos/tabs/#...follow_a_tab.27s_URL_instead_of_loading_its_content_via_ajax Current code: $(function() { $('#rotate > ul').tabs({ select: function(event, ui) { var url = $.data(ui.tab, 'load.tabs'); if( url ) { location.href = url; return false; } return true; } }); });

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• Typescript + requirejs: How to handle circular dependencies?

  - by Aymeric Gaurat-Apelli

  I am in the process of porting my JS+requirejs code to typescript+requirejs. One scenario I haven't found how to handle is circular dependencies. Require.js returns undefined on modules that are also dependent on the current and to solve this problem you can do: MyClass.js define(["Modules/dataModel"], function(dataModel){ return function(){ dataModel = require("Modules/dataModel"); ... } }); Now in typescript, I have: MyClass.ts import dataModel = require("Modules/dataModel"); class MyClass { dataModel: any; constructor(){ this.dataModel = require("Modules/dataModel"); // <- this kind of works but I lose typechecking ... } } How to call require a second time and yet keep the type checking benefits of typescript? dataModel is a module { ... }

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• What is the maximum length in seconds to store a value in memcache

  - by Emilien

  The Google App Engine memcache documentation states that the time parameter of memcache.set() is an "Optional expiration time, either relative number of seconds from current time (up to 1 month), or an absolute Unix epoch time." So I tried to set a value for 30 days, which according to Google is 2 592 000 seconds. However, I highly suspect that this value is too high, because the value was set (memcache.set() returned the value True), but a memcache.get() just after always returned None. Reducing this value to 1 728 000 seconds just worked fine/as expected. I guess that once passed the highest value, the time parameter gets interpreted as an absolute Unix epoch time. That would mean that 2 592 000 seconds got interpreted as "Sat, 31 Jan 1970 00:00:00 GMT", which is obviously a date in the past... So what is the highest value you can enter that will get interpreted as a number of seconds in the future?

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• KO 2.3.4 - Accessing validation array from callbacks in models

  - by kenny99

  Hi, Apologies if this is an oversight or sheer stupidity on my part but I can't quite figure out how to access the validation array from a callback in a model (using ORM and KO 2.3.4). I want to be able to add specific error messages to the validation array if a callback returns false. e.g This register method: public function register(array & $array, $save = FALSE) { // Initialise the validation library and setup some rules $array = Validation::factory($array) ->pre_filter('trim') ->add_rules('email', 'required', 'valid::email', array($this, 'email_available')) ->add_rules('confirm_email', 'matches[email]') ->add_rules('password', 'required', 'length[5,42]') ->add_rules('confirm_password', 'matches[password]'); return ORM::validate($array, $save); } Callback: public function email_available($value) { return ! (bool) $this->db ->where('email', $value) ->count_records($this->table_name); } I can obviously access the current model from the callback, but I was wondering what the best way to add custom error from the callback would be?

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• Oracle Hash Cluster Overflow Blocks

  - by Andrew

  When inserting a large number of rows into a single table hash cluster in Oracle, it will fill up the block with any values that hash to that hash-value and then start using overflow blocks. These overflow blocks are listed as chained off the main block, but I can not find detailed information on the way in which they are allocated or chained. When an overflow block is allocated for a hash value, is that block exclusively allocated to that hash value, or are the overflow blocks used as a pool and different hash values can then start using the same overflow block. How is the free space of the chain monitored - in that, as data is continued to be inserted, does it have to traverse the entire chain to find out if it has some free space in the current overflow chain, and then if it finds none, it then chooses to allocate a new block?

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• How much more productive are three monitors than two?

  - by Sir Graystar

  I am mulling over whether to buy a new monitor, to go along side my current setup of two 24 (ish) inch monitors. What I want to know is whether this is worth the money (probably around £200)? I think most of us will agree that two monitors is much more productive than one when programming and developing (Jeff Atwood has said this many times on his blog, and I imagine that most of you are fans of his), but is three much more productive than two? What I'm worried about is that I will have so much space that one monitor will be used for things that are not related to the task (music, facebook etc.) and it will actually make me less productive.

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• Is it good practice to call module functions directly in VB.NET?

  - by froadie

  I have a Util module in my VB.NET program that has project-wide methods such as logging and property parsing. The general practice where I work seems to be to call these methods directly without prefixing them with Util. When I was new to VB, it took me a while to figure out where these methods/functions were coming from. As I use my own Util methods now, I can't help thinking that it's a lot clearer and more understandable to add Util. before each method call (you know immediately that it's user-defined but not within the current class, and where to find it), and is hardly even longer. What's the general practice when calling procedures/functions of VB modules? Should we prefix them with the module name or not?

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• Managing string resources in a Java application - singleton?

  - by Joe Attardi

  I seek a solution to the age-old problem of managing string resources. My current implementation seems to work well, but it depends on using singletons, and I know how often singletons can be maligned. The resource manager class has a singleton instance that handles lookups in the ResourceBundle, and you use it like so: MessageResources mr = MessageResources.getMessageResources(); // returns singleton instance ... JLabel helloLabel = new JLabel(mr.getString("label.hello")); Is this an appropriate use of a singleton? Is there some better, more universally used approach that I'm not aware of? I understand that this is probably a bit subjective, but any feedback I can get would be appreciated. I'd rather find out early on that I'm doing it wrong than later on in the process. Thanks!

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• troubles with generated constructor in linq2sql

  - by zerkms

  After adding one more table to linq2sql .dbml schema i got Value cannot be null. Parameter name: mapping Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentNullException: Value cannot be null. Parameter name: mapping and it refers to autogenerated file: Line 45: #endregion Line 46: Line 47: public db() : Line 48: base(global::data.Properties.Settings.Default.nanocrmConnectionString, mappingSource) Line 49: { Any ideas why this hapenned and how to solve this?

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• stumped by WSGI module import errors

  - by rguha

  Hi, I'm writing a bare bones Python wsgi application and am getting stumped by module import errors. I have a .py file in the current directory which initially failed to import. By adding sys.path.insert(0, '/Users/guhar/Sites/acom') the import of the module worked. But I now try and import a module that I had installed via easy_install and it fails to import. I tried setting sys.path.insert(0, '/Library/Python/2.5/site-packages/') which contains the egg file, but to no avail. I would've thought that all packages under "/Library/Python/2.5/site-packages/" would be available to a WSGI application. Does anybody have any pointers?

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• XSD data set with Oracle database

  - by Ed Woodcock

  Hi folks, I'm having a major issue with an XSD dataset mapping thingy that I'm using within my current project. We are using XSDs for some data abstraction (it's quicker and debatably more maintainable that using Parameterised SQL or a StoredProc), and on my machine (running in the VS development environment) thy're working fine. However, on the Pre-production server we use for our testing, the XSDs are not working correctly: some method calls will fail with the following error: System.ArgumentException: Value does not fall within the expected range. at Oracle.DataAccess.Client.OracleParameter.set_DbType(DbType value) Has anyone ever encountered this issue before? The methods being called are simple select statements using 1-3 parameters, and as I said before they work fine on my machine.

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• Delphi debug a wrong unit

  - by Averroes

  This is an odd behaviour by my D2006 as it happens sometimes only. I have a project I want to debug. The file I want to debug is named 'Main.pas'. I have another unrelated project with the same Unit name and sometimes the Debug prompt me the wrong Main file instead of the Main unit from the current project. This have happened to me with other files with the same name. I can't debug then as the debug keys don't work (they just don't do anything). Do you have experienced the same problem? How can I fix it? Thanks.

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• How to load xib file with attached view controller ?

  - by hib

  Hello all , I am using a xib file as a back view in coverflow component . and it is seeing nicely . The code for loading a xib file is : NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"TestMine" owner:nil options:nil]; backView = [array objectAtIndex:0]; Now I want to attach a view controller with this xib without changing the current code . How can I do so ? Tell me if more details need to answer the question . Thanks .

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• Merging two folders using git

  - by vrish88

  I'm working on a project with some people who have never used git before. Not knowing the capabilities of git, they created two version of the project: development and production. These two versions are both present in the current environment. To complicate things further, this other user created these folders in addition to the old development folder. So the project directory looks like this /root /proj (old dev folder with my own code in it) /dev_proj (new folder which I would like to merge /prod with) /prod_proj (production code) So what I'd like to do is merge the work that I've done in /proj with the work in the /dev_proj. Is there a way to do this with git? I've thought about creating a branch, copying all the files from /proj to /dev_proj and merging that branch with master. Would this work? Thanks and if I could clarify something let me know.

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• How should I deploy a patch to a Passenger-based production Rails application without downtime?

  - by Olly

  I have a Passenger-based production Rails application which has thousands of users. Occasionally we need to apply a code patch (we use git) and the current process for doing this (you can assume there are no data migrations) is: Perform git pull origin [production-branch-name] on the server touch tmp/restart.txt to restart Passenger This allows us to patch the server without having to resort to putting up a maintenance page, which is great, but it doesn't feel quite right since it's not actually a proper 'deployment', and we still need to manually update the revision file and our deployment doesn't appear in the Hoptoad or NewRelic services we use. Ideally I would run cap production deploy and just let the standard Capistrano deployment script take care of everything, but is this a dangerous thing to do without putting up a maintenance page? This deployment process seems to be fairly safe in that the new revision is deployed to a completely separate folder and only right at the end of the process is a symlink re-created to switch the currently deployed version, but I'm still fairly paranoid about this somehow resulting in a lost or failed request.

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• jQuery Custom Gallery and jCarousel problem

  - by steve

  Active site can be seen here: http://www.studioimbrue.com/index2.php There are currently two small problems with the coding. First: when the page loads and you attempt to click on one of the large images to advance, nothing happens. Once a thumbnail is clicked, the click functionality of the large image comes available. I'm trying to fix it so when the page loads, the user can just start clicking the large image. Second: when an image is clicked, the thumbnail highlight changes. The only problem there is once it gets past 4, the "current" thumbnail needs to be seen, thus the carousel should go to that one. Right now the code for that is nextThumb.closest('.thumbscontainer').jcarousel('next'); but that makes it scroll every time you click. Thanks for any help

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• Design Question on when to save

  - by Ben

  Hi, I was just after peoples opinion on when the best time to save an object (or collection of objects) is. I appreciate that it can be completely dependent on the situation that you are in but here is my situation. I have a collection of objects "MyCollection" in a grid. You can open each object "MyObject" in an editor dialogue by double clicking on the grid. Selecting "Cancel" on the dialogue will back out any changes you have made, but should selecting "ok" commit those changes back to the database, or should they commit the changes on that object back to the collection and have a save method that iterates through the collection and saves all changed objects? If i have an object "MyParentObject", that contains a collection of childen "MyChildObjectCollection", none of the changes made to each "MyChildObject" would be commited to the database until the "MyParentObject" was saved - this makes sense. However in my current situation, none of the objects in the collection are linked, therefore should the "Ok" on the dialogue commit the changes to the database? Appreciate any opinions on this. Thanks

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• Matrix multiplication in java (RE-POST)

  - by Chapax

  Apologies for the re-post; the earlier time I'd posted I did not have all the details. My colleague, who quit the firm was a C# programmer, was forced to write Java code that involved (large, dense) matrix multiplication. He's coded his own DataTable class in Java, in order to be able to a) create indexes to sort and join with other DataTables b) do matrix multiplication. The code in its current form is NOT maintainable/extensible. I want to clean up the code, and thought using something like R within Java will help me focus on business logic rather than sorting, joining, matrix multiplication, etc. Plus, I'm very new to the concept of DataTable; I just want to replace the DataTable with 2D arrays, and let R handle the rest. (I currently do not know how to join 2 large datasets in java very efficiently Please let me know what you think. Also, are there any simple examples that I can take a look at?

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• Stop propagating deletes

  - by Mark

  Is it just me or is anyone else finding EF very difficult to use in a real app :( I'm using it as the data layer and have created custom business objects. I'm having difficulty converting the business objects back to EF objects and updating/adding/deleting from the database. Does anyone know a good, simple example of doing this? Actually the current problem that's driving me nuts is when I delete something EF tries to delete other related stuff as well. For example, if I delete an invoice it will also delete the associated customer! Seems odd. I can't figure out how to stop it doing this. // tried: invoiceEfData.CustomerReference = null; // also tried invoiceEfData.Customer = null; context.DeleteObject(invoiceEfData); context.SaveChanges(); // at this point I get a database error due to it attempting to delete the customer

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• Ignore errors when scanning for files in C:\

  - by Shane

  I am trying to search the C:\ drive for all files with a certain extension. I am using the following code which is working fine, however when it encounters an error the whole process stops rather than continuing with the scan. (running in backgroundworker, hence the invoke) Private Sub ScanFiles(ByVal rootFolder As String, ByVal fileExtension As String) 'Determine if the current folder contains any sub folders Dim subFolders() As String = System.IO.Directory.GetDirectories(rootFolder) For Each subFolder As String In subFolders ScanFiles(subFolder, fileExtension) Next For Each file As String In System.IO.Directory.GetFiles(rootFolder, fileExtension) lb.BeginInvoke(New AddValue(AddressOf AddItems), file) Next End Sub How can I make this code continue once an error is encountered? Thanks for your help.

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• DataFormatString in my Gridview does not work in SharePoint

  - by Etienne

  I have a ASP.NET GridView that i created on a page through SharePoint Designer 2007. For some reason it just does not want to work, why is that and how can i Fix it? Funny thing, it worked on another SharePoint Server but not on the one i am working on now, so i know my code is fine, it must be something ells on the SharePoint Server maybe? My Currency DataFormatStrings also dont want to work on my current SharePoint Server. My DataFormatString for my Date field <asp:BoundField DataField="c505_remdate" HeaderText="Remit. Advice Date" SortExpression="c505_remdate" DataFormatString="{0:d/MM/yyyy}" /> Thanks in advanced!!

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• Downloading a file in ASP.NET (through the server) while streaming it to the user

  - by James Teare

  My ASP.NET website currently downloads a file from a remote server to a local drive, although when users access the site they have to wait for the server to finish downloading the file until they can then download the file from my ASP.NET website. Is it possible to almost stream the download from the remote website - through my ASP.NET website directly to the user (a bit like a proxy) ? My current code is as follows: using (var client = new WebClientEx()) { client.DownloadFile(downloadURL, "outputfile.zip"); } WebClient class: public class WebClientEx : WebClient { public CookieContainer CookieContainer { get; private set; } public WebClientEx() { CookieContainer = new CookieContainer(); } protected override WebRequest GetWebRequest(Uri address) { var request = base.GetWebRequest(address); if (request is HttpWebRequest) { (request as HttpWebRequest).CookieContainer = CookieContainer; } return request; } }

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• Event Tracking

  - by DRapp

  I want to understand event cycles. I have a form with a grid and textboxes. It has a grid, bound to DataTable, and textboxes bound to same table too. I'm trying to debug something and need to know how to identify ALL events fired in the form to see what may solve an issue for me. Anyhow, unless I explicitly subclass every class on my form, and override / attach to every event to my own event handlers, how can I get / listen to all events being fired during a certain action... Such as changing a "Selected" road in a DataGridView. It obviously updates its own "CurrentRow"... I need to know what / how to maybe FORCE a re-loading of SAME CurrentRow. Reason: during a form level "Edit Mode", and I change the content in another "Textbox" control, and reject changes, I need it to simulate the current "Record" is reloaded to go back to its original values.

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