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• What's the best way to do Ruby gemspec creation and dependency management?

  - by John Feminella

  Over the last few months, there have been a number of rapid developments in the state of Ruby dependency management and gem creation, to the point where I've been having trouble keeping up with everything. If I'm writing a new gem, what's the best tool for me to use to create my gemspec? Are there disadvantages of using this tool over competitors? I've used Bundler a few times on applications and for me it's been a lifesaver. Is the consensus that it is suitable for use with production apps? Are there quirks or idiosyncracies people should be aware of? Links to resources you've used and have found helpful would also be much appreciated.

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• [SQL] Query returning more than one row with the same name

  - by Neutralise

  I am having trouble with an SQL query returning more than one row with the same name, using this query: SELECT * FROM People P JOIN SpecialityCombo C ON P.PERSONID = C.PERSONID JOIN Speciality S ON C.GROUPID = S.ID; People contains information on each person, Specialty contains the names and ID of each specialty and SpecialityCombo contains information about the associations between People and their Speciality, namely each row has a PERSONID and a Speciality ID (trying to keep it normalised to some extent). My query works in that it returns each Person and the name of their specialty, but it returns n rows for the number of specialitys they want, because each specialty returns the same row 'name'. What I want is it to return just one row containing each speciality. How can I do this?

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• Exporting MS SQL Schema and Data

  - by stringo0

  I'm used to MySQL and PHPMyAdmin - I had to switch over to MSSQL for an ASP.net project, and I'm having tons of trouble. I'm using the express version of SQL 2008, with SQL Server Management Studio. The following are 2 questions I've been struggling with for a while: 1) How do I export the DB schema for the database? The table structure, etc.? 2) How do I export all the data in the database? Ideally I'd like to have a .sql file that can be run wherever I need the schema or data duplicated, for example a co-worker's computer for a shared project, or online when the project is being hosted. Thanks!

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• C++ iterators problem

  - by qwead

  I'm working with iterators on C++ and I'm having some trouble here. It says "Debug Assertion Failed" on expression (this-_Has_container()) on line interIterator++. Distance list is a vector< vector< DistanceNode . What I'm I doing wrong? vector< vector<DistanceNode> >::iterator externIterator = distanceList.begin(); while (externIterator != distanceList.end()) { vector<DistanceNode>::iterator interIterator = externIterator->begin(); while (interIterator != externIterator->end()){ if (interIterator->getReference() == tmp){ //remove element pointed by interIterator externIterator->erase(interIterator); } // if interIterator++; } // while externIterator++; } // while

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• Domain Redirection While Maintaining Original URL

  - by Steve

  I have two domains ("this_site.com" and "that_site.com") that I want to point to the same place (same set of files). BUT What I really want to do is maintain the original URL in the address bar while the visitor accesses the different pages. Example: The primary domain holding the web files is "this_site.com". If I type in "that_site.com" in the address bar, I want the address bar to keep displaying "that_site.com" no matter where they go on the web site. Normal domain redirection causes the URL displayed in the address bar to change to the 'master' domain (i.e. the visitor that typed in "that_site.com" will see the address bar's URL change to "this_site.com"). Is there some sort of .htaccess trick that I can employ to do this? What I'm trying to do is NOT confuse visitors who visit one URL and find themselves on a different URL as well as avoid the additional expense and trouble of having to maintain two separate hosting accounts.

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• movedown method not saving new position - cakephp tree

  - by Ryan

  Hi everyone, I am experiencing a problem that has popped up recently and is causing quite a bit of trouble for our system. The app we have relies on using the movedown method to organize content, but as of late it has stopped working and began to generate the following warning: Warning (2): array_values() [<a href='function.array-values'>function.array-values</a>]: The argument should be an array in [/usr/local/home/cake/cake_0_2_9/cake/libs/model/behaviors/tree.php, line 459] The line being referenced: list($node) = array_values($Model->find('first', array( 'conditions' => array($scope, $Model->escapeField() => $id), 'fields' => array($Model->primaryKey, $left, $right, $parent), 'recursive' => $recursive ))); The line calling the method: $this->movedown($id,abs((int)$position)); I have exhausted every idea I could come up with. Has anyone else crossed this issue before? Any help, or pointing in a direction would be much appreciated!

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• Is it possible to inspect the contents of a Table Value Parameter via the debugger?

  - by Stephen Edmonds

  Does anyone know if it is possible to use the Visual Studio / SQL Server Management Studio debugger to inspect the contents of a Table Value Parameter passed to a stored procedure? To give a trivial example: CREATE TYPE [dbo].[ControllerId] AS TABLE( [id] [nvarchar](max) NOT NULL ) GO CREATE PROCEDURE [dbo].[test] @controllerData [dbo].[ControllerId] READONLY AS BEGIN SELECT COUNT(*) FROM @controllerData; END DECLARE @SampleData as [dbo].[ControllerId]; INSERT INTO @SampleData ([id]) VALUES ('test'), ('test2'); exec [dbo].[test] @SampleData; Using the above with a break point on the exec statement, I am able to step into the stored procedure without any trouble. The debugger shows that the @controllerData local has a value of '(table)' but I have not found any tool that would allow me to actual view the rows that make up that table.

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• Converting files to blob to save in database

  - by jimbo

  I have an old user site that we are currently updating. The site's users have previously uploaded profile pics that are stored in a directory. I am now wanting to keep these profile images in the database, (easy to backup all data) but am having trouble working out how to do it. There are a lot of tutorials talking about do ing this from files that have just been uploaded and using the tmp name etc, but how can I re-create with files that have already been uploaded? I have looked into $data = file_get_contents($filename); Which seems to create a binary file, but doesn't seem to save in database with: mysql_query("UPDATE profiles SET company_logo = mysql_real_escape_string('".$data."') WHERE id = 1 ") or die(mysql_error());

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• wordpress: previous_post_link() / next_post_link() placeholder

  - by superUntitled

  I am having trouble with the previous_post_link() and next_post_link() functionality. When there is no previous post, the function previous_post_link() does not display a link, likewise for the next_post_link() and the last post. I would like to have a placeholder image so that the design stays consistent. Currently I have images of green arrows pointing left and right, I would like to place an image of a grey arrow if there are no more posts to go back to. Is there a way to use the next_post_link()/previous_post_link() functions but not have the link removed. I also wonder if there is a way for the links to cycle, so that if you come to the most recent post, the next post link would bring you back to the first post.

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• Python structure mistake

  - by jaddy123

  I'm writing a program in which I can Reverse the sequence and Replace all As with Ts, all Cs with Gs, all Gs with Cs, and all Ts with As. the program is to read a sequence of bases and output the reverse complement sequence. I am having trouble to do it so can anyone please help me with this by having a look on my code: word = raw_input("Enter sequence: ") a = word.replace('A', 'T') b = word.replace('C', 'G') c = word.replace('G', 'C') d = word.replace('T', 'A') if a == word and b == word and c == word and d == word: print "Reverse complement sequence: ", word And I want this sort of output: Enter sequence: CGGTGATGCAAGG Reverse complement sequence: CCTTGCATCACCG Regards

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• jquery ajax call: multiple links load data into one div

  - by user1146939

  I have a dynamically generated list of links. Each link will request a different page to load. Depending on the link clicked I want it to fill the div with an ajax .load call. The thing is I want all links to reset and fill the same div. I am having trouble doing this without making a seperate div for each link, which isn't what I'm looking for. This is what I have so far, but only works with one link. <a data-toggle="modal" href="#myModal">Link</a> <div class="modal hide fade" id="myModal"></div> <script type="text/javascript"> $(document).ready(function() { $('#myModal').load('mypage.php'); }); </script>

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• Selecting a sequence NEXTVAL for multiple rows

  - by stringpoet

  I am building a SQL Server job to pull data from SQL Server into an Oracle database through a linked server. The table I need to populate has a sequence for the name ID, which is my primary key. I'm having trouble figuring out a way to do this simply, without some lengthy code. Here's what I have so far for the SELECT portion (some actual names obfuscated): SELECT (SELECT NEXTVAL FROM OPENQUERY(MYSERVER, 'SELECT ORCL.NAME_SEQNO.NEXTVAL FROM DUAL')), psn.BirthDate, psn.FirstName, psn.MiddleName, psn.LastName, c.REGION_CODE FROM Person psn LEFT JOIN MYSERVER..ORCL.COUNTRY c ON c.COUNTRY_CODE = psn.Country MYSERVER is the linked Oracle server, ORCL is obviously the schema. Person is a local table on the SQL Server database where the query is being executed. When I run this query, I get the same exact value for all records for the NEXTVAL. What I need is for it to generate a new value for each returned record. I found this similar question, with its answers, but am unsure how to apply it to my case (if even possible): Query several NEXTVAL from sequence in one satement

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• How to test that action uses argument?

  - by Caster Troy

  I am supposed to be using test-driven development but in this particular case, as I am having trouble, I implemented the action method first. It looks like this: public ViewResult Index(int pageNumber = 1) { var posts = repository.All(); var model = new PagedList<Post>(posts, pageNumber, PageSize); return View(model); } Both the repository and the PagedList<> have been tested already. Now I want to verify that when the action is given a page number that the page number is actually considered. private Mock<IPostsRepository> repository; private HomeController controller; [Test] public void Index_Doohickey() { var actual = controller.Index(2); // .. How do I test that the controller actually uses the page number here? }

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• How can I get Facebook Profile image from email?

  - by Forbini

  There's an outlook plugin called Xobni that has a really cool feature, if a contact has an email address, it will fetch that contact's profile picture and display it. Their FAQ states the following: Xobni sends an encrypted email address to Facebook to retrieve the Facebook profile for the person who is currently being viewed in the Xobni sidebar. Your own Facebook profile is never altered by Xobni, and all Facebook privacy settings are strictly followed when viewing other profiles. I'd like to duplicate this functionality. However, I can't figure out which API call they're using. I'm assuming when they say "encrypted email address" that's laymen's terms for the email hash. Once a username is derived, the graph api looks ideal for actually fetching the image, but I'm having trouble going from email hash to profile ID.

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• PHP: How to begin testing large, existing codebase, and test for regression on production site?

  - by anonymous coward

  I'm in charge of at least one large body of existing PHP code, that desperately needs tests, and as well I need some method of checking the production site for errors. I've been working with PHP for many years, but am unfortunately new to testing. (Sorry!). While writing tests for code that has predictable outcomes seems easy enough, I'm having trouble wrapping my head around just how I can test the live site, to ensure proper output. I know that in a test environment, I could set up the database in a known state... but are there proper methods or techniques for testing a live site? Where should I begin? [I am aware of PHPUnit and SimpleTest, but haven't chosen one over the other yet]

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• Make these 2 sql statements into one with the same functionality

  - by Phil

  I have sql statement one; select linkscat.id, linkscat.category from linkscat, contentlinks, links where contentlinks.linksid = links.id and contentlinks.contentid = @contentid and links.linkscatid = linkscat.id order by linkscat.category and sql statement 2 takes a parameter called @linkscat which is 'id' from the statement above; select * from links where linkscatid= @linkscat I'm running into all types of trouble trying to use many sqldatareaders, nested repeaters etc, but it would be great if all the work could be done in the one statement? Is this possible and if so please can you help by posting the final statement? Thanks greatly, any help much appreciated!

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• swipe to delete uitableview cell; a bit jumpy?

  - by Veeru

  I have implemented "swipe to delete" on my table cell. It works fine, how ever, the delete button is a little jumpy; as in, i really have to position my finger on top of the button and carefully touch it to delete the record. I am not sure if am making it clear; let me do my best to explain When the delete button appears; the user has trouble clicking on it, it disappears the moment its clicked. THe user has to try a few times to actually delete the cell. Am not sure what the reason is, it just seems like the delete button gets hidden as though the user has clicked on a different part of the cell. Any suggestsions?

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• prevent onmouseout when hovering child element of the parent absolute div

  - by John

  Hi I am having trouble with the onmouseout function in a absolute positoned div. When the mouse hits a child element in the div, the mouseout event fires, but I do not want it to fire until the mouse is out of the parent, absolute div. How can I prevent the mouseout event from firing when it hits a child element WITHOUT jquery. I know this has something to do with event bubbling, but I am having no luck on finding out how to work this out. A similar post I found here: How to disable mouseout events triggered by child elements? How ever that solution uses jquery.

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• how to return value from groovy to java

  - by Sid

  Hi I am very new to groovy and having trouble with some parts. I have a jsp page tied to a servlet that runs groovy scripts. I am able to get to the groovy script from the servlet. But after the script runs how do I return the response from the groovy script back to the servlet to be displayed in the jsp page? My java servlet code is as follows: File file = new File("TestScript.groovy"); ClassLoader parent = getClass().getClassLoader(); GroovyClassLoader loader = new GroovyClassLoader(parent); Class groovyClass = loader.parseClass(file); Object[] args = {}; GroovyObject groovyObject = (GroovyObject) groovyClass.newInstance(); groovyObject.invokeMethod("runTest", args);

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• C++ Beginner - Simple block of code crashing, reason unknown.

  - by Francisco P.

  Hello everyone, Here's a block of code I'm having trouble with. string Game::tradeRandomPieces(Player & player) { string hand = player.getHand(); string piecesRemoved; size_t index; for (size_t numberOfPiecesToTrade = rand() % hand.size() + 1; numberOfPiecesToTrade != 0; --numberOfPiecesToTrade) { index = rand() % hand.size(); piecesRemoved += hand[index]; hand.erase(index,1); } player.removePiecesFromHand(piecesRemoved); player.fillHand(_deck); return piecesRemoved; } I believe the code is pretty self explanatory. fillhand and removepiecesfromhand are working fine, so that's not it. I really can't get what's wrong with this :( Thanks for your time

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• MATLAB: How do I get 3D coordiantes from a user-click?

  - by Tim

  I'm using Matlab to create a small chess game for one of my courses this semester. The thing I'm having trouble with is having the user be able to select one of the chess pieces. To simplify things, I'm making it so that the user selects a piece by clicking on the square that the chess piece resides on rather than clicking the piece itself (which I assume would be much more difficult). I know how to get the x and y coordinates of the view-port, but how do I transform these coordinates into 3-space coordinates? I know that there are multiple x,y,z coordinates associated with each view-port coordinate, but I'm only interested in the x,y,z coordinate where z = 0 (since the board itself is in the x,y plane that intersects the z axis where z = 0). Thanks!

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• emacs debugger: how can I step-out, step-over ?

  - by Cheeso

  I don't know why I'm having so much trouble groking the documentation for the elisp debugger. I see it has a commands to "step-into" (d). But for the life of me, I cannot see a step-out or step-over. Can anyone help? If I have this in the Backtrace buffer: Debugger entered--returning value: 5047 line-beginning-position() * c-parse-state() * byte-code("...") * c-guess-basic-syntax() c-show-syntactic-information(nil) call-interactively(c-show-syntactic-information) ...where do I put the cursor, and what key do I type, to step out of the parse-state() fn ? by that I mean, run until that fn returns, and then stop in the debugger again.

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• How do I learn Scheme?

  - by Gautam

  Hey, I'm a relative newbie to programming. I've picked up some very basic Java (File I/O, GUIs, inheritance) and would like to take a look at functional programming - in particular, I would like to learn Scheme. I'm having some trouble finding a Scheme implementation I can understand. Interpreters are weird; I'm not sure how to save my programs and create executables. I've downloaded PLT Scheme, but I would prefer using something less condescending, something similar to NetBeans. Is there a plugin or tool that will allow me to quickly and easily create and manage Scheme programs? All help is appreciated!

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• Calling C++ function from C.

  - by claws

  I know this. Calling C function from C++: If my application was in C++ and I had to call functions from a library written in C. Then I would have used //main.cpp extern "C" void C_library_function(int x, int y);//prototype C_library_function(2,4);// directly using it. This wouldn't mangle the name C_library_function and linker would find the same name in its input *.lib files and problem is solved. Calling C++ function from C??? But here I'm extending a large application which is written in C and I need to use a library which is written in C++. Name mangling of C++ is causing trouble here. Well I cannot use C++ compiler over my C project because thats breaking lot of other stuff. What is the way out? By the way I'm using MSVC

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• Need help with regular expressions - URL redirection

  - by paperless

  Hello everyone. I'm trying to redirect an easy to remember url to a php file but I'm having some trouble with the regex. Here's what I have at the moment: RewriteRule ^tcb/([a-zA-Z0-9]{1,})/([a-zA-Z0-9]{1,})/([a-zA-Z0-9]{1,}) /tcb/lerbd.php?autocarro=$1&tipo=$2&dsd=$3 It is working but only if I supply all 3 arguments. I want the last two arguments to be optional so it either works with only the first or all three. I'm hoping you can help me with this. Thank you very much.

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