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• ASP.NET control event handler not firing on postback?

  - by Polaris878

  I have a control which has an ImageButton which is tied to an OnClick event... Upon clicking this control, a postback is performed and the event handler is not called. AutoEventWireup is set to true, and I've double checked spelling etc.... We haven't touched this control in over a year and it has been working fine until a couple of weeks ago. We have made changes to controls which load this control... so I'm wondering, what kind of changes could we have made to stop this event handler from being called? There is quite a bit of Javascript going on, so this could be the culprit too... Edit: Some clarification... we are dynamically loading the parent control of the ImageButton in the OnLoad event of the page... if that makes sense.

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• Is removing unused functionality a bad thing?

  - by Andrew Grimm

  Is it possible for YAGNI to apply in the past tense? You created some functionality, it was used a little bit a while ago, but you aren't using it any more, and you don't want to maintain it, so you'd rather delete it. Is getting rid of unused or rarely-used functionality neccessarily a bad thing? Background: I use source control, so if I need the functionality again, I can get it. I'm the only user of my software (I'm a bioinformatician analyzing a data set). One scenario where I came across this was that I was using inheritance, with a parent class, and two child classes. One was handling files generated by 454 sequencing (next-generation sequencing), and the other was handling files generated by Sanger sequencing (previous-generation sequencing). I was actively maintaining the latter, but not the former. Maybe my mistake was using inheritance rather than composition, but that's a slightly different story.

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• What design pattern do you use the most?

  - by spoon16

  I'm interested in understanding what design patterns people find themselves using often. Hopefully this list will help other recognize common scenarios and the associated design pattern that can be used to solve them. Please describe a common problem you find yourself solving and the design pattern(s) you use to solve it. Links to blogs or documentation describing the pattern are also appreciated. Edit: Please expand on your answers a bit, I would like this to be a useful reference for someone who wants to learn more about design patterns and is curious on what situations a specific design pattern might be used. Nobody has linked to any "more learning" resources.

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• Creating a Large Matrix in ff

  - by Ryan Rosario

  I am trying to create a huge matrix in ff, and I know that ff is good for this sort of thing. But, there is a major problem. The dimensions of the matrix exceed .Machine$max_integer! I am running on a 64 bit machine, using 64bit R and 64bit ff. Is there any way to get around this problem? It's been suggested that R is using the MAXINT value from stdint.h. Is there any way to fix this without changing that file and possibly breaking build? > ffMatrix <- ff(vmode="boolean", dim=c(1e10,1e10)) Error in if (length < 0 || length > .Machine$integer.max) stop("length must be between 1 and .Machine$integer.max") : missing value where TRUE/FALSE needed In addition: Warning message: In ff(vmode = "boolean", dim = c(1e+10, 1e+10)) : NAs introduced by coercion > 1e+10 > .Machine$integer.max [1] TRUE

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• C: Expanding an array with malloc

  - by Mal Ock

  I'm a bit new to malloc and C in general. I wanted to know how I can, if needed, extend the size of an otherwise fixed-size array with malloc. Example: #define SIZE 1000 struct mystruct { int a; int b; char c; }; mystruct myarray[ SIZE ]; int myarrayMaxSize = SIZE; .... if ( i > myarrayMaxSize ) { // malloc another SIZE (1000) elements myarrayMaxSize += SIZE; } The above example should make clear what I want to accomplish. (By the way: I need this for an interpreter I write: Work with a fixed amount of variables and in case more are needed, just allocate them dynamically)

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• Ruby on Rails - where to write business logic while processing a request? (newbie)

  - by Genadinik

  I am learning Ruby on Rails. I made a simple link like this: <%= link_to "Alex Link", alexes_path(@alex) %> then I routed it in routes.rb like this: resources :alexes get "home/index" then I am a bit unclear, but I think it goes to this part of the controller: def index #@alexes = Alex.all respond_to do |format| format.html # index.html.erb format.json { render json: @alexes } end end Am I correct that it goes to this part of the controller? Then nothing much happens and it goes to the next page which is index.html.rb under views\alexes So what I am wondering is - if I needed to do some business logic, would I write that in the controller snippet? Where inside the snippet? An example would be nice to take a look. Also, I would like to connect to a MongoDb database. Would I also write that in the middle of the controller? Thanks!

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• matlab fit exp2

  - by HelloWorld

  I'm unsuccessfully looking for documentation of fit function using exp2 (sum of 2 exponents). How to operate the function is clear: [curve, gof] = fit(x, y,'exp2'); But since there are multiple ways to fit a sum of exponents I'm trying to find out what algorithm is used. Particularly what happens when I'm fitting one exponent (the raw data) with a bit of noise, how the exponents are spread. I've simulated several cases, and it seems that it "drops" all the weight on the second set of coefficients, but row data analysis often shows different behavior. Does anyone have suggestions of documentation?

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• Checkstyle for C#?

  - by PSU_Kardi

  I'm looking to find something along the lines of Checkstyle for Visual Studio. I've recently started a new gig doing .NET work and realized that coding standards here are a bit lacking. While I'm still a young guy and far from the most experienced developer I'm trying to lead by example and get things going in the right direction. I loved the ability to use Checkstyle with Eclipse and examine code before reviews so I'd like to do the same thing with Visual Studio. Anyone have any good suggestions? Another thing I'd be somewhat interested in is a plug-in for SVN that disallows check-in until the main coding standards are met. I do not want people checking in busted code that's going to wind up in a code review. Any suggestions at this point would be great.

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• Changing property type in class that implements interface with object type property.

  - by used2could

  I know the title is a bit confusing but bare with me. (I'm up for suggestions on a new title lol) I'm writing a TemplateEngine that will allow me to use my own markup in text based files. I'm wanting to add controls as plugins as the application matures. Currently i've got a structure like the following: interface IControl string Id object Value class Label : IControl string Id string Value class Repeater : IControl string Id List<IControl> Value Now you'll see the strange part right away in the Repeater class with the Value property. I was hoping that having the Value type as object in the interface would allow me the flexibility to expand the controls as i go along. The compiler doesn't like this and for good reason i guess. Does anyone have any suggestions how to accomplish this? Note: Please don't go into suggesting things like use Spark View Engine for templating. There is a reason i'm creating extra work for myself.

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• WPF data grid for financial style reporting?

  - by user191254

  Hello, I'm looking for a decent WPF data grid or solution involving one to represent financial data. I've looked at many - the WPF one, XCeed, Ingragistics, DevExpress, etc.... but none of them seem to offer the simple requirement I have: I want to be able to display group subtotals in their columns in the group row, e.g. GROUP 1 xxxx.xx GROUP 2 xxxx.xx ROW 1 xx.xx ROW 2 xx.xx Does anyone know of a grid that does this, or a nice supporting collection that implements aggregate functions (group totals would need to be used in individual line items) so that existing grids with a bit of XAML styling would work? Thanks in advance, Stephen

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• Generating C++ BackTraces in OS/X (10.5.7)

  - by phillipwei

  I've been utilizing backtrace and backtrace_symbols to generate programmatic stack traces for the purposes of logging/diagnosis. It seems to roughly work, however, I'm getting a little bit of mangling and there are no accompanying file/line numbers associated with each function invocation (as I'd expect within a gdb bt call or something). Here's an example: 1 leonardo 0x00006989 _ZN9ExceptionC2E13ExceptionType + 111 2 leonardo 0x00006a20 _ZN9ExceptionC1E13ExceptionType + 24 3 leonardo 0x0000ab64 _ZN5Rules11ApplyActionER16ApplicableActionR9GameState + 1060 4 leonardo 0x0000ed15 _ZN9Simulator8SimulateEv + 2179 5 leonardo 0x0000eec9 _ZN9Simulator8SimulateEi + 37 6 leonardo 0x00009729 main + 45 7 leonardo 0x000025c6 start + 54 Anything I'm missing something, doing something silly, or is this all I can expect out of backtrace on OS/X? Some other tidbits: I don't see a rdynamic link option for the g++ version (4.0.1) I'm using. -g/-g3 doesn't make any difference. abi::__cxa__demangle doesn't seem to do anything

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• change email address format with minimal disruption

  - by femi

  Hello, all the email addresses in my organization are in the format [email protected]. this was started when we were a small organization. Now we have grown and need to use something a bit more professional like [email protected] how can this change be implemented with minimal disruption? We currently only use smarteremail. Could recieving ONLY with the old and replying with the new be a solution..till we wean our recipients off the old email address? Any suggestions are welcome. How will moving to exchange help in this instance? Can it be configured to automatically send out using a different address? Thanks

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• w3c validation error with utf-8

  - by ian

  When I try to validate a certain page I get the below error: Sorry, I am unable to validate this document because on line 136 it contained one or more bytes that I cannot interpret as utf-8 (in other words, the bytes found are not valid values in the specified Character Encoding). Please check both the content of the file and the character encoding indication. The error was: utf8 "\xFF" does not map to Unicode What exactly does this mean and how can I find out what character is causing the problem? The page is generated dynamically in PHP and a bit large and I am not sure what to look for.

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• Wrapper not resizing to full content size

  - by Moppy

  Hey guys, I have a div called #background. I have most of my content in it and I want it to resize when I add more content. As far as I know the way to do this is to assign it no height? I have done this in my layout.css file. As far as I can see, my #background doesnt close until after the last bit of content which is what I want, but it's not working. It seems to be just stopping after my #special offers div, I#m not sure why this is? Colm

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• Swapping UIImages causing 'unrecognized selector sent to instance' ?

  - by user158103

  Error: [__NSCFDate drawAtPoint:]: unrecognized selector sent to instance 0xd251e0 Termininating app due to uncaught exception 'NSInvalidArgumentException' Scenario: for the most part this works. But I notice this error, even on the simulator, when I swapping UIImages, slowly, but consistently. For example, I have a retained reference to a UIImage that im drawing. By the click of a picker control I am changing the face image (this occurs in another view-controller). I can consistently recreate this error by continuously changing the faces. It usually crashes at about the 4th swap or more. My theory: It's not loading the image, therefore the image reference is nil. I know ive read a bit about UIImage being cached, so I wouldnt think im running out of memory. Any ideas? Thanks!

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• Replacing a class with Mono.Cecil

  - by icktoofay

  Say I have assembly A. It was modified with Mono.Cecil a little bit. Now say I have assembly B. It has a class named SomeClass. Assembly A also has a class named SomeClass. Now I want to replace SomeClass from assembly A with the one in assembly B. I tried a few things, but I know that for one of my attempts, it actually remapped a method call like this: Console.WriteLine("Test."); ...into this: int.WriteLine("Test."); That can't be right. What is the correct way to replace a class with Mono.Cecil?

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• Keeping a database structure up to date in a project where code is on subversion?

  - by Bruno De Barros

  I have been working with Subversion for a while now, and it's been incredible for the management of my projects, and even to help managing the deployment to several different servers, but there is just the one thing that still annoys me. Whenever I make any changes to the database structure, I need to update every server manually, I have to keep track of any changes I made, and because some of my servers run branches of the project (modifications that are still being worked on, or were made for different purposes), it's a bit awkward. Until now, I've been using a "database.sql" file, which is a dump of the database structure for a specific revision. But it just seems like such a bad way to manage this. And I was wondering, how does everyone else manage their MySQL databases when they're working on a project and using Subversion?

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• Cannot loop through Excel 2003 files in SSIS 2008

  - by Techspirit

  Hi, I am trying to execute a SSIS 2008 package on a 64-bit OS and import Excel 2003 files to SQL Server 2008. I have created an OLEDB Connection to the Excel file with a Connection String that retrieves the Excel file from a variable, inside the ForEach Loop Container. The Run64BitRunTime is set to false. I am not able to edit the SQL Command on the OLEDB Source in the Data Flow task. It returns an error : Error 2 Validation error. Load List Staged Table: Load List Staged Table: SSIS Error Code DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER. The AcquireConnection method call to the connection manager "List OLEDB to Excel" failed with error code 0xC0202009. There may be error messages posted before this with more information on why the AcquireConnection method call failed. 0 0 Appreciate any help.

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• Password reset by email without a database table

  - by jpatokal

  The normal flow for resetting a user's password by mail is this: Generate a random string and store it in a database table Email string to user User clicks on link containing string String is validated against database; if it matches, user's pw is reset However, maintaining a table and expiring old strings etc seems like a bit of an unnecessary hassle. Are there any obvious flaws in this alternative approach? Generate a MD5 hash of the user's existing password Email hash string to user User clicks on link containing string String is validated by hashing existing pw again; if it matches, user's pw is reset Note that the user's password is already stored in a hashed and salted form, and I'm just hashing it once more to get a unique but repeatable string. And yes, there is one obvious "flaw": the reset link thus generated will not expire until the user changes their password (clicks the link). I don't really see why this would be a problem though -- if the mailbox is compromised, the user is screwed anyway.

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• How to schedule daily backup in MSSQL Server 2008 Web Edition

  - by Xenon

  In MSSQL Management Studio I created a maintenance plan but it won't work Error is; "Message Executed as user: LITESPELL-19C34\Administrator. Microsoft (R) SQL Server Execute Package Utility Version 10.0.1600.22 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. The SQL Server Execute Package Utility requires Integration Services to be installed by one of these editions of SQL Server 2008: Standard, Enterprise, Developer, or Evaluation. To install Integration Services, run SQL Server Setup and select Integration Services. The package execution failed. The step failed." But in Microsoft page http://www.microsoft.com/sqlserver/2008/en/us/web.aspx in Automate tasks and policies section it is written that backup can be scheduled in this edition but how?

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• C++ Microsoft SAPI: How to set Windows text-to-speech output to a memory buffer?

  - by Vladimir

  Hi all, I have been trying to figure out how to "speak" a text into a memory buffer using Windows SAPI 5.1 but so far no success, even though it seems it should be quite simple. There is an example of streaming the synthesized speech into a .wav file, but no examples of how to stream it to a memory buffer. In the end I need to have the synthesized speech in a char* array in 16 kHz 16-bit little-endian PCM format. Currently I create a temp .wav file, redirect speech output there, then read it, but it seems to be a rather stupid solution. Anyone knows how to do that? Thanks!

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• Making change recursively: How do I modify my algorithm to print all combinations?

  - by cb

  I have an algorithm that recursively makes change in the following manner: public static int makeChange(int amount, int currentCoin) { //if amount = zero, we are at the bottom of a successful recursion if (amount == 0){ //return 1 to add this successful solution return 1; //check to see if we went too far }else if(amount < 0){ //don't count this try if we went too far return 0; //if we have exhausted our list of coin values }else if(currentCoin < 0){ return 0; }else{ int firstWay = makeChange(amount, currentCoin-1); int secondWay = makeChange(amount - availableCoins[currentCoin], currentCoin); return firstWay + secondWay; } } However, I'd like to add the capability to store or print each combination as they successfully return. I'm having a bit of a hard time wrapping my head around how to do this. The original algorithm was pretty easy, but now I am frustrated. Any suggestions? CB

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• CruiseControl modificationSet fails to execute when svn points to a url

  - by Woot4Moo

  In my current CruiseControl setup I am running the following target: <modificationset quietperiod="30"> <svn RepositoryLocation="http://my/url/repo/trunk" /> </modificationset> I do a simple checkin of a blank text file and subsequently the messages I receive in the CruiseControl log are as follows: [cc]May-13 15:53:56 Project - Project mine: bootstrapping [cc]May-13 15:53:56 jectController- mine Controller: build progress event: bootstrapping [cc]May-13 15:53:56 Project - Project mine: checking for modifications [cc]May-13 15:53:56 jectController- mine Controller: build progress event: checking for modifications [cc]May-13 15:53:59 Project - Project mine: No modifications found, build not necessary. [cc]May-13 15:53:59 Project - Project mine: idle [cc]May-13 15:53:59 jectController- connectfour Controller: build progress event: idle [cc]May-13 15:53:59 Project - Project mine: next build in 1 minutes [cc]May-13 15:53:59 Project - Project mine: waiting for next time to build [cc]May-13 15:53:59 jectController- mine Controller: build progress event: waiting for next time to build Tortoise: TortoiseSVN 1.6.8, Build 19260 - 32 Bit , 2010/04/16 20:20:11 CruiseControl: 2.8.3

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• sql query question

  - by bu0489

  hey guys, just having a bit of difficulty with a query, i'm trying to figure out how to show the most popular naturopath that has been visited in a centre. My tables look as follows; Patient(patientId, name, gender, DoB, address, state,postcode, homePhone, businessPhone, maritalStatus, occupation, duration,unit, race, registrationDate , GPNo, NaturopathNo) and Naturopath (NaturopathNo, name, contactNo, officeStartTime, officeEndTime, emailAddress) now to query this i've come up with SELECT count(*), naturopathno FROM dbf10.patient WHERE naturopathno != 'NULL' GROUP BY naturopathno; which results in; COUNT(*) NATUROPATH 2 NP5 1 NP6 3 NP2 1 NP1 2 NP3 1 NP7 2 NP8 My question is, how would I go about selecting the highest count from this list, and printing that value with the naturopaths name? Any suggestions are very welcome, Brad

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• How to do a Postgresql subquery in select clause with join in from clause like SQL Server?

  - by Ricardo

  I am trying to write the following query on postgresql: select name, author_id, count(1), (select count(1) from names as n2 where n2.id = n1.id and t2.author_id = t1.author_id ) from names as n1 group by name, author_id This would certainly work on Microsft SQL Server but it does not at all on postegresql. I read its documentation a bit and it seems I could rewrite it as: select name, author_id, count(1), total from names as n1, (select count(1) as total from names as n2 where n2.id = n1.id and n2.author_id = t1.author_id ) as total group by name, author_id But that returns the following error on postegresql: "subquery in FROM cannot refer to other relations of same query level". So I'm stuck. Does anyone know how I can achieve that? Thanks

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