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• Why would an error get thrown inside my try-catch?

  - by George Johnston

  Why would my try-catch block still be throwing an error when it's handled? Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Try Here >> : _MemoryStream.Seek(6 * StartOffset, 0) _MemoryStream.Read(_Buffer, 0, 6) Catch ex As IOException // Handle Error End Try Edit: Cleaned the question up to remove the extraneous information.

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• Releasing dynamically added UILabel.

  - by coure06

  I am adding a no. of UILable dynamically to my view like this UILabel *test = [[UILabel alloc] initWithFrame:CGRectMake(x, y, 50, 50)]; [self.view addSubview:tick]; Is it necessary to release these UILabel from memory in viewDidUnLoad and dealloc, if yes how i will release them? how i will get their reference?

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• reduce bandwidth streaming mp3s php...

  - by Scarface

  Hey guys, quick question for any experts out there. I am allowing users to upload and post mp3s so other users can listen to/stream. I was wondering if anyone had any tips for reducing bandwidth, or any tips or methods for streaming mp3s. I currently just reference the location of the file with my flash mp3 player after the file has been uploaded. I would ask about images as well, but I am pretty sure they can be compressed using gzip or mod_deflate

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• Using object instead of AppDelegate for Outlets & Actions?

  - by Driss Zouak

  In all the MonoTouch examples I have seen everyone is using outlets and actions on AppDelegate, yet when I've been through some objective-C webcasts I see people using an Object they drag onto XIB in Interface Builder and using that (Seems a lot cleaner). Is there just not a way to reference any Objects like that that we create? Is there a particular way to access it? Any advice would be appreciated, thanks

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• What's CFRunLoop?

  - by Boon

  I would like to understand run loop more in-depth than what the reference provides. Is there resources out there that discuss this in greater details?

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• How to Make ESC exits full-screen mode in Trusted Application?

  - by Jeaffrey Gilbert

  One consequence of the keyboard-restriction change is that pressing ESC will not exit full-screen mode in trusted applications. This enables you to use the ESC key for other functionality. However, you must provide your own user interface for exiting full-screen mode. Reference: http://msdn.microsoft.com/en-us/library/ee721083(v=VS.95).aspx#fullscreen_support I need to make pressing ESC will exit from full-screen mode in trusted application without provide a UI control in all pages. Please give me hints, thank you.

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• what does this error mean in c?

  - by mekasperasky

  #include<stdio.h> #include<ctype.h> int main() { char a,b; FILE *fp; fp=fopen("lext.txt","w"); fprintf(fp,"PLUS"); return 0; } the error i get is this /tmp/ccQyyhxo.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status

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• w3c document.forms[0].fieldname equivalent

  - by Amien

  I've been using document.forms[0].fieldname.value to get values in javascript from a form, but I'd like to use a name to reference the field and not a 0, what would be the equivalent these days since isn't compliant?

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• Accessing Session and IPrinciple data in a Master View in Asp.Net MCV

  - by bplus

  I currently have a abstract controller class that I all my controllers inherit from. In my master page I want to be able to access some data that will be in Session and also the currently user (IPrinciple). I read that I could use the contructor of by abstract base controller class, that is I could do something like public BaseController() { ViewData["SomeData"] = Session["SomeData"]; ViewData["UserName"] = this.User.Identity.Name; } I could then access ViewData["UserName"] etc from my master page. My problem is that both Session and User are null at this point. Does anybody know of a different approach? Thanks in advance.

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• Drupal: customizing Nice Menus

  - by Patrick

  hi, I need to place my drop down menus at the same position (and same width) like in this website: http://lancelmaat.nl/index.php?option=com_content&view=article&id=98&Itemid=79 Furthermore I want to change the content of some items, by placing some html (like in "Contact" item in the reference page). Is this easy to do with Nice Menus ? Thanks

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• What does ancestor mean in the google app engine datastore.

  - by M.A. Cape

  Can anyone tell or define more what is "ancestor" and give an example on it and also what it is for? I just can't grasp what it really is. Reference: http://code.google.com/appengine/docs/python/datastore/queryclass.html#Query_ancestor Thanks.

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• About SQL Server security

  - by Felipe Fiali

  I have an ASP.NET application which runs under the Classic .NET AppPool in IIS. I have a report to render from my website. The problem is SQL Server keeps telling me that it failed to create a connection to the datasource, because login failed for user IUSR. After adding that user directly to the databse I could get the report to work, but I'm concerned about security. By doing that, am I opening my specified databases to all websites hosted on IIS? Or is that account identity-specific?

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• Re-generate Code Gen Files in Visual Studio

  - by dev.e.loper

  I'm using Visual Studio 2008. I've added a control on a page but can't reference it in code-behind file. When I looked at the Code-Gen file, I didn't find my new control. It looks like Visual Studio didn't update Code Gen file to include my control. Is there a way to manually re-generate that Code Gen file?

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• Can you use a prepared statement in MySQL with "On Duplicate Key Update"?

  - by Jim H.

  I can't find any reference to using "ON DUPLICATE KEY UPDATE" with MySQL and PHP. Am I correct in thinking that this is not possible? -Jim

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• Testing code that uses SoftReference<T>

  - by bmargulies

  To get any code with SoftReference<T> to be fully tested, one must come up with some way to test the 'yup, it's been nulled' case. One might more or less mock this by using a 'for-test' code path to force the reference to be null, but that won't manage the queue exactly as the GC does. I wonder if anyone out can share experience in setting up a repeatable, controlled, environment, in which the GC is, in fact, provoked into collecting and nulling?

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• calendar.getInstance() or calendar.clone()

  - by Pangea

  I need to make a copy of a given date 100s of times (I cannot pass-by-reference). I am wondering which of the below two are better options newTime=Calendar.getInstance().setTime(originalDate); OR newTime=originalDate.clone(); Performance is of main conern here. thx.

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• How to view the entire set of changes made to svn for the last 'n' days?

  - by Joshua

  How to view the entire set of changes made to svn for the last 'n' days?. I couldn't find a reference in the document though

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• how to design the query for non-sql database

  - by Benny

  can anyone give some reference for non-sql database query interface design pattern? For sql-based database, the query can be achieved by combining the query token. but for non-sql, how to design the query, given that the query could be very complex.

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• XSD.exe question about include files and code generation

  - by Roger Willcocks

  If you have an XSD with an includes reference. Is it possible to generate 2 separate class files. 1 for the XSD, and 1 for the included XSD? My Scenario 4 XSDs, each of which share 15-20 element definitions in common. Rather than maintaining, I'd like to end up with the 4 XSDs all referencing a fifth file with the common definitions, and code generating 5 .cs files to use.

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• Selecting based on __key__ (a unique identifier) in google appengine [Java]

  - by Stavros

  I have public class QuantityType { @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY) private Key key; @Persistent private String type; } I am trying to setup a query to get the right QuantityType by it's key gql = "select * from QuantityType where __key__='aght52oobW1hIHTWVzc2FnZRiyAQw'"; But its not working because BadFilterError: BadFilterError: invalid filter: key filter value must be a Key; received aght52oobW1hIHTWVzc2FnZRiyAQw (a str). I have also tried to use gql = "select * from QuantityType where __key__=='" + KeyFactory.stringToKey(qTypeKey)+"'"; but it's now working.. How can I get a specific object from my datastore by it's key?

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• Dynamically loading jQuery library from a custom component and ensuring only one instance.

  - by Paul Lucas

  Say I have a web component that uses jQuery and I want to distribute it as a packaged component. I need a way to ensure that the jQuery library is available on or after the page loads, but I also want to check that the containing html page, or another unknown component that may reference jQuery hasn't already added the library to the page. At the moment the best example I've seen is this http://www.squidoo.com/load-jQuery-dynamically It would need a little tweaking, but I was wondering if there were any other best practices.

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• CascadingDropDown in TabContainer and Target in other Tab

  - by User.Anonymous

  Hello, I have divised a page with a TabContainer. Before, this page worked with a CascadingDropDown that populate a DropDownList. Now this DropDownList is in another tab. So I catch an exception "Object Reference Null" when I try to see this page. How did runs to load a DropDownList in another Tab when I change a value in a different Tab ? Thank you.

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• WPF: Microsoft_Windows_Themes not found

  - by Martin

  I am getting this error in my WPF app: The type 'Microsoft_Windows_Themes:ScrollChrome' was not found. Verify that you are not missing an assembly reference and that all referenced assemblies have been built. Any idea?

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• programming language implemented in pure python

  - by iamgopal

  hi, i am creating ( researching possibility of ) a highly customizable python client and would like to allow users to actually edit the code in another language to customize the running of program. ( analogous to browser which itself coded in c/c++ and run another language html/js ). so my question is , is there any programming language implemented in pure python which i can see as a reference ( or use directly ? ) -- i need simple language ( simple statements and ifs can do )

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• Inheritance in tables - structure problem

  - by Naor

  I have 3 types of users in my system. each type has different information I created the following tables: BaseUser(base_user_id, username, password, additional common data) base_user_id is PK and Identity UserType1(user_id, data related to type1 only) user_id is PK and FK to base_user_id UserType2(user_id, data related to type2 only) user_id is PK and FK to base_user_id UserType3(user_id, data related to type3 only) user_id is PK and FK to base_user_id Now I have relation from each type of user to warehouses table. Users from type1 and type2 should have only warehouse_id and users from type3 should have warehouse_id and customer_id. I thought about this structure: WarehouseOfUser(base_user_id,warehouse_id) base_user_id is FK to base_user_id in BaseUser WarehouseOfTyp3User(base_user_id,warehouse_id, customer_id) base_user_id is FK to base_user_id in BaseUser The problem is that such structure allows 2 things I want to prevent: 1. add to WarehouseOfTyp3User data of user from type2 or type1. 2. add to WarehouseOfUser data of user from type3. what is the best structure for such case?

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