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Articles indexed in March 2010

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  • OrderBy and Distinct using LINQ-to-Entities

    - by BlueRaja
    Here is my LINQ query: (from o in entities.MyTable orderby o.MyColumn select o.MyColumn).Distinct(); Here is the result: {"a", "c", "b", "d"} Here is the generated SQL: SELECT [Distinct1].[MyColumn] AS [MyColumn] FROM ( SELECT DISTINCT [Extent1].[MyColumn] AS [MyColumn] FROM [dbo].[MyTable] AS [Extent1] ) AS [Distinct1] Is this a bug? Where's my ordering, damnit?

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  • Unreal Tournament 3 vs UDK: What Should I Choose?

    - by Matt Christian
    Many people in the mod community were very excited to see the release of the Unreal Developer Kit (UDK) a few months ago.  Along with generating excitement into a very dedicated community, it also introduced many new modders into a flourishing area of indie-development.  However, since UDK is free, most beginners jump right into UDK, which is OK though you might just benefit more from purchasing a shelf-copy of Unreal Tournament 3. UDK UDK is a free full version of UnrealEd (the editor environment used to create games like Gears of War 1/2, Bioshock 1/2, and of course Unreal Tournament 3).  The editor gives you all the features of the editor from the shelf-copy of the game plus some refinements in many of the tools.  (One of the first things you'll find about UnrealEd is that it's a collection of tools grouped into the same editor so it really isn't a single 'tool') Interestingly enough, Epic is allowing you to sell any game made in UDK with a few catches.  First off, you must purchase a liscense for your game (which, I THINK is aproximately $99 starting).  Secondly, you must pay 25% of all profits for the first $5,000 of your game revenue to them (about $1250).  Finally, you cannot use any of the 'media' provided in UDK for your game.  UDK provides sample meshes, textures, materials, sounds, and other sample pieces of media pulled (mostly) from Unreal Tournament 3. The final point here will really determine whether you should use UDK.  There is a very small amount of media provided in UDK for someone to go in and begin creating levels without first developing your own meshes, textures, and other media.  Sure, you can slap together a few unique levels, though you will end up finding yourself restriced to the same items over and over and over.  This is absolutely how professional game development is; you are 'given' (typically liscensed or built in-house) an engine/editor and you begin creating all the content for the game and placing it.  UDK is aimed toward those who really want to build their game content from scratch with a currently existing engine.  It is not suited for someone who would like to simply build levels and quick mods without learning external 3D programs and image editing software. Unreal Tournament 3 Unless you have a serious grudge against FPS's, Epic, or your computer sucks, there really is no reason not to own this game for PC.  You can pick it up on Steam or Amazon for around $20 brand new.  Not only are you provided with a full single-player and multiplayer game, but you are given the entire UnrealEd 3.0 including all of the content used to build UT3.  If you want to start building levels and mods quickly for UT3, you should absolutely pick up a shelf-copy. However, as off-the-shelf UT3 is a few years old now, the tools have not been updated for quite a while.  Compared to UDK, the menus are more difficult to navigate through and take more time getting used to.  Since UDK is updated almost every month, there are new inclusions to the editor that may not be in UT3 (including the future addition of 3D!).  I haven't worked enough with shelf UT3 to see if there are more features in UDK or if they both feature the same stuff in different forms, however you should remember that the Unreal Engine 3.0 has undergone numerous upgrades between it's launch and Gears of War 2 (in fact, Epic had a conference to show off what changed just between the Gears of Wars games). Since UT3 has much more core content, someone who wants to focus on level editing or modding the core UT3 game may find their needs better suited with an off-the-shelf copy of UT3.  If that level designer has a team that is generating custom assets, they may be better off with UDK. The choice is now yours...

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  • Correct way to set up office network - 8 workstations, a file server and a staging server

    - by naunu
    Our office had this old school windows 2003 domain setup, our server caught fire, and now we are looking to do it right from scratch. Here is what we need: 5 PC and 3 Mac workstations for web development, they will each have WAMP/MAMP setup on them, managed by their developers. We will have a file server for assets, and a LAMP server with an external IP for staging. Here is what we have to work with: 5 IP addresses, brand new PC file server with windows 2008 SE, D-Link DSS-16+ 16 port switch, belkin 5 port wireless router, cable modem with 4 ports. How I have it set up now (this is a temporary makeshift setup): Cable modem = LAMP server, wireless router Wireless router = Switch = All of the workstations and file server (setup as a workgroup). We have noticed our internet is very slow with us all plugged in to the switch, and the switch plugged in to the router. I am not positive, but I think it is because our router does not have NAT. We are also having problems with the MACs connection to the network drive - it keeps disconnecting. I want this done right, and we have a ~$600 budget to buy anything else we need. Does anybody have any advice for me? Should I set up a domain or workgroup?

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  • MySql scoping problem with correlated subqueries

    - by Rolf
    Hi, I'm having this Mysql query, It works: SELECT nom ,prenom ,(SELECT GROUP_CONCAT(category_en) FROM (SELECT DISTINCT category_en FROM categories c WHERE id IN (SELECT DISTINCT category_id FROM m3allems_to_categories m2c WHERE m3allem_id = 37) ) cS ) categories ,(SELECT GROUP_CONCAT(area_en) FROM (SELECT DISTINCT area_en FROM areas c WHERE id IN (SELECT DISTINCT area_id FROM m3allems_to_areas m2a WHERE m3allem_id = 37) ) aSq ) areas FROM m3allems m WHERE m.id = 37 The result is: nom prenom categories areas Man Multi Carpentry,Paint,Walls Beirut,Baalbak,Saida It works correclty, but only when i hardcode into the query the id that I want (37). I want it to work for all entries in the m3allem table, so I try this: SELECT nom ,prenom ,(SELECT GROUP_CONCAT(category_en) FROM (SELECT DISTINCT category_en FROM categories c WHERE id IN (SELECT DISTINCT category_id FROM m3allems_to_categories m2c WHERE m3allem_id = m.id) ) cS ) categories ,(SELECT GROUP_CONCAT(area_en) FROM (SELECT DISTINCT area_en FROM areas c WHERE id IN (SELECT DISTINCT area_id FROM m3allems_to_areas m2a WHERE m3allem_id = m.id) ) aSq ) areas FROM m3allems m And I get an error: Unknown column 'm.id' in 'where clause' Why? From the MySql manual: 13.2.8.7. Correlated Subqueries [...] Scoping rule: MySQL evaluates from inside to outside. So... do this not work when the subquery is in a SELECT section? I did not read anything about that. Does anyone know? What should I do? It took me a long time to build this query... I know it's a monster query but it gets what I want in a single query, and I am so close to getting it to work! Can anyone help?

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  • Visual PHP GUI IDE

    - by Joshua
    Does anybody know of a reliable, well-made tool for creating standalone desktop applications complete with GUI, using just PHP, or primarily PHP? I enjoy the R.A.D. and many other aspects of PHP and would like to use it for some non server/client projects.

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  • How to use an Audio Unit on the iPhone

    - by CodeToaster
    I'm looking for a way to change the pitch of recorded audio as it is saved to disk, or played back (in real time). I understand Audio Units can be used for this. The iPhone offers limited support for Audio Units (for example it's not possible to create/use custom audio units, as far as I can tell), but several out-of-the-box audio units are available, one of which is AUPitch. How exactly would I use an audio unit (specifically AUPitch)? Do you hook it into an audio queue somehow? Is it possible to chain audio units together (for example, to simultaneously add an echo effect and a change in pitch)? EDIT: After inspecting the iPhone SDK headers (I think AudioUnit.h, I'm not in front of a Mac at the moment), I noticed that AUPitch is commented out. So it doesn't look like AUPitch is available on the iPhone after all. weep weep Apple seems to have better organized their iPhone SDK documentation at developer.apple.com of late - now its more difficult to find references to AUPitch, etc. That said, I'm still interested in quality answers on using Audio Units (in general) on the iPhone.

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  • Converting a md5 hash byte array to a string

    - by Blankman
    How can I convert the hashed result, which a byte array, to a string? byte[] bytePassword = Encoding.UTF8.GetBytes(password); using (MD5 md5 = MD5.Create()) { byte[] byteHashedPassword = md5.ComputeHash(bytePassword); } So I need to convert byteHashedPassword to a string

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  • Why is this an invalid Turing machine?

    - by Danny King
    Whilst doing exam revision I am having trouble answering the following question from the book, "An Introduction to the Theory of Computation" by Sipser. Unfortunately there's no solution to this question in the book. Explain why the following is not a legitimate Turing machine. M = { The input is a polynomial p over variables x1, ..., xn Try all possible settings of x1, ..., xn to integer values Evaluate p on all of these settings If any of these settings evaluates to 0, accept; otherwise reject. } This is driving me crazy! I suspect it is because the set of integers is infinite? Does this somehow exceed the alphabet's allowable size? Thanks!

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  • Case-insensitive find_or_create_by_whatever

    - by Horace Loeb
    I want to be able to do Artist.case_insensitive_find_or_create_by_name(artist_name)[1] (and have it work on both sqlite and postgreSQL) What's the best way to accomplish this? Right now I'm just adding a method directly to the Artist class (kind of ugly, especially if I want this functionality in another class, but whatever): def self.case_insensitive_find_or_create_by_name(name) first(:conditions => ['UPPER(name) = UPPER(?)', name]) || create(:name => name) end [1]: Well, ideally it would be Artist.find_or_create_by_name(artist_name, :case_sensitive => false), but this seems much harder to implement

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  • Finding user location before map loads

    - by 4thSpace
    I'm trying to find the user's location using: CLLocationCoordinate2D _location; CLLocation *userLoc = nil; if(appDelegate.clLocationManager.locationServicesEnabled){ userLoc = mapView.userLocation.location; _location = userLoc.coordinate; } The problem is that I haven't yet initialized the map so the above doesn't work. Is there a way to get the user's location without using mapkit? Or should I be using a different technique?

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  • Need Help with SQL Subquery

    - by Pete Augello
    Hey: I am trying to write a query that will return all orders that only have a Subscription included. It is easy enough to write a query that includes all Orders with Subscriptions, another that includes all orders without a Subscription and then compare them with an unmatched query. But I don't want to have to store Queries in my Access database, I prefer to have it all in my ASP code, and I can't get this to work with just one complex query. Here are samples of what works if I store them: Query1 SELECT tblOrders.OrderID, tblOrderItems.ProductID FROM tblOrders INNER JOIN tblOrderItems ON tblOrders.OrderID = tblOrderItems.OrderID WHERE ((Not ((tblOrderItems.ProductID)=12 And (tblOrderItems.ProductID)<=15))); Query2 SELECT tblOrders.OrderID, tblOrderItems.ProductID FROM tblOrders INNER JOIN tblOrderItems ON tblOrders.OrderID = tblOrderItems.OrderID WHERE ((((tblOrderItems.ProductID)=12 And (tblOrderItems.ProductID)<=15))); Query3 SELECT Query2.OrderID, Query2.ProductID FROM Query2 LEFT JOIN Query1 ON Query2.OrderID = Query1.OrderID WHERE (((Query1.OrderID) Is Null)); So, my question is 'how do I write Query3 so that it doesn't refer to Query1 or Query2?' or, am I missing some other way do do this? Thanks, Pete [email protected]

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  • How do I insert into a unique key into a table?

    - by Ben McCormack
    I want to insert data into a table where I don't know the next unique key that I need. I'm not sure how to format my INSERT query so that the value of the Key field is 1 greater than the maximum value for the key in the table. I know this is a hack, but I'm just running a quick test against a database and need to make sure I always send over a Unique key. Here's the SQL I have so far: INSERT INTO [CMS2000].[dbo].[aDataTypesTest] ([KeyFld] ,[Int1]) VALUES ((SELECT Max([KeyFld]) FROM [dbo].[aDataTypesTest]) + 1 ,1) which errors out with: Msg 1046, Level 15, State 1, Line 5 Subqueries are not allowed in this context. Only scalar expressions are allowed. I'm not able to modify the underlying database table. What do I need to do to ensure a unique insert in my INSERT SQL code?

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  • Salesforce - Update/Upsert custom object entry

    - by Phill Pafford
    UPDATE: It's working as expected just needed to pass the correct Id, DUH!~ I have a custom object in salesforce, kind of like the comments section on a case for example. When you add a new comment it has a date/time stamp for that entry, I wanted to update the previous case comment date/time stamp when a new case comment is created. I wanted to do an UPDATE like this: $updateFields = array( 'Id'=>$comment_id, // This is the Id for each comment 'End_Date__c'=>$record_last_modified_date ); function sfUpdateLastCommentDate($sfConnection, $updateFields) { try { $sObjectCustom = new SObject(); $sObjectCustom->type = 'Case_Custom__c'; $sObjectCustom->fields = $updateFields; $createResponse = $sfConnection->update(array($sObjectCustom)); } catch(Exception $e) { $error_msg = SALESFORCE_ERROR." \n"; $error_msg .= $e->faultstring; $error_msg .= $sfConnection->getLastRequest(); $error_msg .= SALESFORCE_MESSAGE_BUFFER_NEWLINE; // Send error message mail(ERROR_TO_EMAIL, ERROR_EMAIL_SUBJECT, $error_msg, ERROR_EMAIL_HEADER_WITH_CC); exit; } } I've also tried the UPSERT but I get the error: Missing argument 2 for SforcePartnerClient::upsert() Any help would be great

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  • google caja how to use

    - by cometta
    let say i have a page , and i want to allow 3rd party to embed small application/iframe into my page. in order to use caja on my page to secure the 3rd party small app/iframe. do i need to put any extra javascript/serverside code in order to use caja? fetching of the 3rd party small application is done through proxy or direct iframe?

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  • linux vs windows and web server question

    - by student
    What are the differences from security point of view running a web server on linux and running a web server on windows. I heard that almost nobody going to attack linux machine. Is that true? or Linux is hard to attack and nobody want to waste his time?

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  • Identify Encoded Strings

    - by Steven
    Does anyone know of a utility (any OS or online) that, with a string input, identifies the encoding type (checksum, base64, etc) and if possible (and appropriate) decodes the string?

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  • Software to watch movies at the same time and chat

    - by Thomaschaaf
    Hello! Sometimes I want to watch a movie with friends... them not always being near me makes it hard to do this. Usually everyone will either rent the dvd or get a copy online mostly as .avi files. Usually we all have chat windows open and when one has to pause to get a drink or because of some other reason it is VERY hard to resync. Is there software to handle this? The file could be hosted on linux machines in the cloud if that would be any help :) Greetings, Thomas

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  • Set default reminder pattern to iCal Calendar/Group

    - by elhombre
    Hi all I have in iCal some Calendars/Groups named Birthday, Exams and Holidays. Now I am wondering if I can assign a default reminder pattern to all Exams events, for example: 2 Weeks before, 1 Week before, 2 Days before. The result should be that I don't have to specify each time the reminder pattern of an event in Exams when I create a New one. NOTE: If iCal can't do this, is it maybe possible do that through an automator action etc.?

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