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  • Core Data (NSFetchedResultsController) displaying one row per section

    - by Urizen
    I have a CoreData application which uses NSFetchedResultsController. NSFetchedResultsController is useful in that it allows me to access the fetched objects more easily etc. but I find that I have problems with the following: I get a crash when I display a single row for each section (irrespective of the number of actual rows present) as a summary of the information in that section (e.g. showing a statistical analysis of the data contained in the fetched rows for that section). I understand that the NSFetchedResultsControllerDelegatemethods have to agree with the number of rows reported per section by the UITableView Delegate method but I would like to be able to fetch all of the records for each section without necessarily displaying each of the rows. The above causes me inconsistency crashes, when I try to insert or delete data for a section, which reports that the number of rows for each section is not as it should be given the number of insertions/deletions. Is there any way I can do what I'm trying to achieve? Thanks for any help.

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  • Setting a cell's format using Excel 2007 Interop and C#

    - by CVertex
    I'm using the office 2007 interop assemblies to create some excel spreadsheets. There are plenty of questions on here about getting started and MSDN contains heaps of articles, like this one. The API is funky, and sometimes a bit confusing. When I set a value of a cell, is there a way to set it's format? I'd like to mark particular fields as Date's so my customer can run excel macros on them. Also, numbers would be useful. Thanks!

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  • sort the "rollup" in group by

    - by shantanuo
    I found that the "with rollup" option used with group by is very useful. But it does not behave with "order by" clause. Is there any way to order by the way I want as well as calculate the sub-totals? CREATE TABLE `mygroup` ( `id` int(11) default NULL, `country` varchar(100) default NULL ) ENGINE=MyISAM ; INSERT INTO `mygroup` VALUES (1,'India'),(5,'India'),(8,'India'),(18,'China'),(28,'China'),(28,'China'); mysql>select country, sum(id) from mygroup group by country with rollup; +---------+---------+ | country | sum(id) | +---------+---------+ | China | 74 | | India | 14 | | NULL | 88 | +---------+---------+ 3 rows in set (0.00 sec) mysql>select country, sum(id) as cnt from mygroup group by country order by cnt ; +---------+------+ | country | cnt | +---------+------+ | India | 14 | | China | 74 | +---------+------+ 2 rows in set (0.00 sec) mysql>select country, sum(id) as cnt from mygroup group by country with rollup order by cnt; ERROR 1221 (HY000): Incorrect usage of CUBE/ROLLUP and ORDER BY Expected Result: +---------+------+ | country | cnt | +---------+------+ | India | 14 | | China | 74 | | NULL | 88 | +---------+---------+ 3 rows in set (0.00 sec)

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  • How to protect compiled Java classes?

    - by Registered User
    I know, many similar questions has been asked here. I am not asking if I can protect my compiled Java class - because obviously you will say 'no you can't'. I am asking what is the best known method of protecting Java classes against de-compiling? If you aware of any research or academic paper in this field please do let me know. Also if you have used some methods or software please share you experience? Any kind of information will be very useful. Thank you.

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  • How to create Server-side Progress indicator in Javascript

    - by Eli
    Hey Guys, I want to create a section in my site, where a user has a few simple update buttons. Each of these update buttons will be going to the server, and will do a long crunching behind the scene. While the server crunches data, I want the user to have a some kind of progress indicator, like progress bar or textual percentage. I'm using jQuery as my javascript library, and CodeIgniter (PHP) as the server-side framework, if it's important... What I was thinking about is using PHP's flush() function to report progress status to jQuery, but I'm not sure that jQuery's ajax functions are reading the output before it's complete... So any advice/explanation would be useful and helpful! Thanks :)

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  • How do I change JAVASCRIPT_DEFAULT_SOURCES for my application?

    - by Adam Lassek
    When you call javascript_include_tag :defaults you usually get: prototype.js, effects.js, dragdrop.js, and controls.js. These are stored in a constant in ActionView::Helpers::AssetTagHelper called 'JAVASCRIPT_DEFAULT_SOURCES`. My application uses jQuery, so I want to replace the Prototype references with something more useful. I added an initializer with these lines, based on the source code from jRails: ActionView::Helpers::AssetTagHelper::JAVASCRIPT_DEFAULT_SOURCES = %w{ jquery-1.4.min jquery-ui jquery.cookie } ActionView::Helpers::AssetTagHelper::reset_javascript_include_default But when I do this, I get: warning: already initialized constant JAVASCRIPT_DEFAULT_SOURCES during startup. What's the correct way of changing this value? In the source code it checks for the constant before setting it, but apparently that happens before it runs the initializer scripts. The Rails 3.0 release will provide much greater flexibility with choice of JS libraries, so I guess this is a problem with an expiration date.

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  • Debugging with only the .exe

    - by Franklin Albricias
    HI: I've a Delphi 7 program that I wrote many years ago, but I've lost the source code. It's a small program but very useful for me. I've tried to 'install' it again in a new Windows XP computer, just copying the folder with de data (.db paradox files), and configured the BDE connection. When the programm starts I receive an "Unknown exception" and halts. I've no idea why this happens, and can't debug cause the lost source code. I've tried in another computer with the same results. Any suggestions or ideas? What do you do in a situation like this? Thanks in advance.

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  • Problem with StandardOutput stream in async mode.

    - by JF
    Hi everyone. I have a program that launches command line processes in async mode, using BeginOutputReadLine. My problem is that the .Exited event is triggered when there is still some .OutputDataReceived events being triggered. What I do in my .Exited event must happen only once all my .OutputDataReceived events are done, or I'll be missing some output. I looked in the Process class to see if anything could be useful to me, as to wait for the stream to be empty, but all I find is for sync mode only. Can any of you help? Thanx.

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  • Is writing to a socket an arbitrary limitation of the sendfile() syscall?

    - by Sufian
    Prelude sendfile() is an extremely useful syscall for two reasons: First, it's less code than a read()/write() (or recv()/send() if you prefer that jive) loop. Second, it's faster (less syscalls, implementation may copy between devices without buffer, etc...) than the aforementioned methods. Less code. More efficient. Awesome. In UNIX, everything is (mostly) a file. This is the ugly territory from the collision of platonic theory and real-world practice. I understand that sockets are fundamentally different than files residing on some device. I haven't dug through the sources of Linux/*BSD/Darwin/whatever OS implements sendfile() to know why this specific syscall is restricted to writing to sockets (specifically, streaming sockets). I just want to know... Question What is limiting sendfile() from allowing the destination file descriptor to be something besides a socket (like a disk file, or a pipe)?

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  • Reflection, invoke

    - by Alaa'
    Hi, I have a dll file, and i took an object from it and called the functions inside this dll by the object, like this way: Command testClass = (Command)assembly.CreateInstance(creatObject); testClass.Execute(); anyway, the i used reflection from some reason. so i need to use invoke function & set values for variables, then calling the basic function Execute. Before: i wrote the following: object returnValue = objectType.GetMethod("setValues").Invoke(classObject, arguments); testClass.Execute(); but it wasnt useful for me. i used the following: object returnValue = objectType.GetMethod("setValues").Invoke(classObject, arguments); object returnValue1 = objectType.GetMethod("Execute").Invoke(classObject, null); i just want to ask if this is right, to calling the execute in this way, and by the way it works! Thank you.

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  • I wanted to be a programmer

    - by Henrik P. Hessel
    Hello, let me ask your opinion. I'm 25 now, living in Germany. I started with QBASIC, did some Java in Highschool, and after School I created some Websites in PHP. Now, because my Company is Microsoft Gold Partner, I've to use Microsoft all the time. C#, MSSQL, ASPX and Sharepoint <- I really hate it! So, in my spare I concentrate to gain more knowledge (C++, Java, Silverlight or WPF), because it feels that I'm so far behind, in comparison for example to you guys, or other older employees in my company. Do think that my behaviour is useful? Should I focus my time to become i.e. a pure C# Programmer? I did C# even before I started to learn some C++. Should I learn what do with pointers, memcpy and stuff like that, even if managed code brings us so much benefits? Or is it a waste of time, better invested in learning the latest technologies? rAyt

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  • Profiling statements inside a User-Defined Function

    - by Craig Walker
    I'm trying to use SQL Server Profiler (2005) to track down some application performance problems. One of the calls being made is to a table-valued user-defined function. This function wraps a select that joins several tables together. In SQL Server Profiler, the call to the UDF is logged. However, the select that underlies the UDF isn't being logged at all. Because of this, I'm not getting useful data on which tables & indexes are being hit. I'd like to feed this info into the Database Tuning Advisor for some indexing advice. Is there any way (short of unwrapping the queries themselves) to log the tables called by UDFs in Profiler?

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  • Vim OmniCppComplete on vectors of pointers

    - by Alex
    Hi, I might have done something wrong in the set up but is OmniCppComplete supposed to provide the members/functions of classes when doing this? vectorofpointers[0]-> At the moment all I get when trying that are things relating to the vector class itself, which obviously isn't very useful. I think it might have been working before I tagged /usr/include/ but I could be wrong. Also, is it possible to disable the preview window? I find it just clutters up my workspace. And since I enabled ShowPrototypeInAbbr I don't really need it. Thanks, Alex

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  • Downloading Eclipse's Source Code

    - by digiarnie
    I'm doing a study on large Java projects and would like to view the source code for Eclipse. I have gone to this url (http://wiki.eclipse.org/index.php/CVS_Howto) and figured that the most useful cvs repository for me to look at would be this one: :pserver:[email protected]:/cvsroot/eclipse (The Eclipse platform project) However, when looking at this repository, it has so many modules! Which modules should I be trying to check out? I don't necessarily want to build the IDE from source, however, I just want to get the core Eclipse code base to perform some analysis. Would I just check out any modules starting with "org.eclipse..."? Should I be checking out any of the others? Or is there an easier way to get the source? I read somewhere that you can get the source from the binary version of Eclipse but I am unsure where to find the source.

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  • Python mechanize - two buttons of type 'submit'

    - by directedition
    I have a mechanize script written in python that fills out a web form and is supposed to click on the 'create' button. But there's a problem, the form has two buttons. One for 'add attached file' and one for 'create'. Both are of type 'submit', and the attach button is the first one listed. So when I select the forum and do br.submit(), it clicks on the 'attach' button instead of 'create'. Extensive Googling has yielded nothing useful for selecting a specific button in a form. Does anyone know of any methods for skipping over the first 'submit' button and clicking the second?

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  • what great software engineers know or aspiring ones should know?

    - by trojanwarrior3000
    I do not mean any particular language or methodology. But basics( one have abstracted from ones experience and interaction with smarter people in this field) one should have including concepts, practical issues, tips/techniques/tricks one should be aware of.For example the lessons or ideas may relate to programming,testing,design,project schedules, that are really useful in daily life of software engineer/developer etc ? This may be a good question because it looks not to specific, however experience of many is better than reading from books.I find discussions much helpful than books.Hope every one will have some lessons/ideas to contribute.please substantiate with atleast one example.

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  • Passing switches to Xcode 3.1 user scripts

    - by MyztikJenz
    I have a user script that would be much more useful if it could dynamically change some of its execution dependent on what the user wanted. Passing simple switches would easily solve this problem but I don't see any way to do it. I also tried embedding a keyword in the script name, but Xcode copies the script to a guid-looking filename before execution, so that won't work either. So does anyone know of a way to call a user script with some sort of argument? (other that the normal %%%var%%% variables) Thanks! EDIT: User scripts are accessible via the script menu in Xcode's menubar (between the Window and Help menus). My question is not about "run script" build phase scripts. My apologies for leaving that somewhat ambiguous.

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  • How can I refactor this to use an inline function or template instead of a macro?

    - by BillyONeal
    Hello, everyone :) I have a useful macro here: #define PATH_PREFIX_RESOLVE(path, prefix, environment) \ if (boost::algorithm::istarts_with(path, prefix)) { \ ExpandEnvironmentStringsW(environment, buffer, MAX_PATH); \ path.replace(0, (sizeof(prefix)/sizeof(wchar_t)) - 1, buffer); \ if (Exists(path)) return path; \ } It's used about 6 times within the scope of a single function (that's it), but macros seem to have "bad karma" :P Anyway, the problem here is the sizeof(prefix) part of the macro. If I just replace this with a function taking a const wchar_t[], then the sizeof() will fail to deliver expected results. Simply adding a size member doesn't really solve the problem either. Making the user supply the size of the constant literal also results in a mess of duplicated constants at the call site. Any ideas on this one?

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  • Best practice for assigning A/B test variation based on IP address

    - by mojones
    I am starting to write some code for A/B testing in a Grails web application. I want to ensure that requests from the same IP address always see the same variation. Rather than store a map of IP-variant, is it OK to simply turn the IP address into an integer by removing the dots, then use that as the seed for a random number generator? The following is taking place in a Grails Filter: def ip = request.remoteAddr def random = new Random(ip.replaceAll(/\./, '').toInteger()) def value = random.nextBoolean() session.assignment = value // value should always be the same for a given IP address I know that identifying users by IP address is not reliable, and I will be using session variables/cookies as well, but this seems to be useful for the case where we have a new session, and no cookies set (or the user has cookies disabled).

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  • What is your Wordpress 2.9 theme development workflow after getting PSD from client?

    - by metal-gear-solid
    What are useful and free resources to make Wordpress 2.9 themes? Is Dreamweaver helpful to make themes ? What are time saving tips? I'm using Dreamweaver CS3 on Windows. and my main browser is FF 3.6. I know some extensions of dreamweaver but those are not updated with wordpress versions. Should we edit theme files directly on live server or Local XAMPP option is better? Should i create XHTML CSS version of PSD then XHTML CSS to wordpress? After making XHTML CSS Version of PSD how to incorporate Wordpress 2.9 Tags in it? Has anyone tried this tool http://www.themedreamer.com/ is this really helpful?

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  • How do Scala parser combinators compare to Haskell's Parsec?

    - by artif
    I have read that Haskell parser combinators (in Parsec) can parse context sensitive grammars. Is this also true for Scala parser combinators? If so, is this what the "into" (aka "") function is for? What are some strengths/weaknesses of Scala's implementation of parser combinators, vs Haskell's? Do they accept the same class of grammars? Is it easier to generate error messages or do other miscellaneous useful things with one or the other? How does packrat parsing (introduced in Scala 2.8) fit into this picture? Is there a webpage or some other resource that shows how different operators/functions/DSL-sugar from one language's implementation maps onto the other's?

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  • How to build LLVM using GCC 4 on Windows?

    - by Steve314
    I have been able to build LLVM 2.6 (the llvm-2.6.tar.gz package) using MinGW GCC 3.4.5. I haven't tested properly, but it seems to work. The trouble is, I have libraries of my own which don't build using GCC3, but which work fine in GCC4 (template issues). I believe the first official GCC4 version for MinGW is GCC 4.4.0. EDIT Decluttered - everything useful in the "tried this tried that" info is now in the answer. EDIT Most of this question/answer is redundant with LLVM 2.7 - the standard configure, make routine works fine in MinGW with no hacks or workarounds.

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  • Trying to build automatic audio-conferencing capability into a WebApp

    - by Keller
    Hey all, I'm working with a team of relatively novice programmers, and we are trying to create a site that will have audio-conferencing capabilities such that whenever someone visits the page, they will immediately have audio-conferencing capabilities with everyone else on the page (5 people max). Can anyone point us in a general direction? Should we be looking into building a custom app, leveraging audio conferencing software, or trying to mimic a webex program? Would Adobe Stratus be useful in getting this kind of functionality? Does anyone have any ideas about how we would design something like this on a macro level? Sorry for the noobish question, but any guidance would be deeply appreciated. Thanks, Keller

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  • Do you know any code sharing sites?

    - by jasondavis
    I am always looking to organize and make my resource bookmarks better and easiar to access when I need them. 1 thing I really like is code sharing sites, they let you enter in code and then give you a special link to give a friend or a user on this site even to show then code, This is a very useful tool I believe. So below is my list of code sharing sites, there is 4 on the list and they all have unique features. Some have syntax highlighting for multiple languages, some allow you to save your code as private and only share with the people you give the link to, and some even run the run and output any possible errors. Do you know of any sites like this? if you know of any sites like this for programming code please post it here. http://pastie.org/ http://codepad.org/ http://pastebin.me/ http://jsbin.com/ allows you to auto-insert a javascript library like jquery and test live js code

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  • Testing Django web app with Hudson and Selenium

    - by ycseattle
    This might be a newbie question for Hudson. I am trying to setup Selenium testing for my Django website in my Hudson CI server. The question is, the Hudson will use subversion to checkout my Django code into its own path, how do I "deploy" the code into the same server for testing? This is not a question about deploying django, but instead how to access the source file in hudson workspace. Most tutorials/blogs is about building and running tests, but I couldn't find useful information about how to setup the web application on the server to run the test against. 1) Should I write some shell script to copy the source files from the hudson workspace? Is there an environment variable to use to access the workspace? 2) Is there a tutorial on how to grab web app files in hudson workspace and deploy them? I am sure this apply for other technologies like PHP as well. Thanks!

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