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• UI fonts and languages

  - by Kai Sellgren

  I am developing a multilingual web application that has a nice looking UI. I thought using CSS 3's font-face property to make it even nicer UI, but I'm not really sure if that's a good idea. According to some people I have talked to, different languages need different fonts. This means that there is no single font that can display characters of all languages, because the same character may look different across languages. For example, according to Wikipedia, the Unicode code point U+4EE4 looks different in Korean and Japanese languages. So my question is, would it make most sense to contain the fonts within the language packs -- or within the themes of my UI?

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• Strategy for Storing Multiple Nullable Booleans in SQL

  - by Eric J.

  I have an object (happens to be C#) with about 20 properties that are nullable booleans. There will be perhaps a few million such objects persisted to a SQL database (currently SQL Server 2008 R2, but MySQL may need to be supported in the future). The instances themselves are relatively large because they contain about a paragraph of text as well as some other unrelated properties. For a given object instance, most of the properties will be null most of the time. When users search for instances of such objects, they will select perhaps 1-3 of the nullable boolean properties and search for instances where at least one of those 1-3 properties is non-null (OR search). My first thought is to persist the object to a single table with nullable BIT columns representing the nullable boolean properties. However, this strategy will require one index per BIT column to avoid performing a table scan when searching. Further, each index would not be particularly selective since there are only three possible values per index. Is there a better way to approach this problem?

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• How to make pdb recognize that the source has changed between runs?

  - by user88028

  From what I can tell, pdb does not recognize when the source code has changed between "runs". That is, if I'm debugging, notice a bug, fix that bug, and rerun the program in pdb (i.e. without exiting pdb), pdb will not recompile the code. I'll still be debugging the old version of the code, even if pdb lists the new source code. So, does pdb not update the compiled code as the source changes? If not, is there a way to make it do so? I'd like to be able to stay in a single pdb session in order to keep my breakpoints and such. FWIW, gdb will notice when the program it's debugging changes underneath it, though only on a restart of that program. This is the behavior I'm trying to replicate in pdb.

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• Why do I have to specify virtual functions in the declaration of a derived class?

  - by neuviemeporte

  Given the base class A and the derived class B: class A { public: virtual void f(); } class B : public A { public: void g(); } I get errors saying that f() is not declared in B while trying do define void B::f(). Do I have to declare f() explicitly in B? I think that if the interface changes I shouldn't have to correct the declarations in every single class deriving from it. Is there no way for B to get all the virtual functions' declarations from A automatically?

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• Need help on nested loop of queries in php and mysql?

  - by mysqllearner

  Hi, I am trying to get do this: <?php $good_customer = 0; $q = mysql_query("SELECT user FROM users WHERE activated = '1'"); // this gives me about 40k users while($r = mysql_fetch_assoc($q)){ $money_spent = 0; $user = $r['user']; // Do queries on another 20 tables for($i = 1; $i<=20 ; $i++){ $tbl_name = 'data' . $i; $q2 = mysql_query("SELECT money_spent FROM $tbl_name WHERE user = '{$user}'"); while($r2 = mysql_fetch_assoc($q2)){ $money_spend += $r2['money_spent']; } if($money_spend > 1000000){ $good_customer += 1; } } } This is just an example. I am testing on localhost, for single user, it returns very fast. But when I try 1000, it takes forever, not even mentioned 40k users. Anyway to optimise/improve this code? EDIT: By the way, each of the others 20 tables has ~20 - 40k records

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• Looking for Open-Source or Licensed Personalised Greeting Card software

  - by Mr Pablo

  Before I jump in at the very deep end and try to make my own version of Moon Pig (www.moonpig.com) I would like to know what (if any) software/platforms currently exist that allow for visitors to personalise cards with text and uploaded photos and then purchase printed versions all via a single e-Commerce style platform. I have Googled till my fingers bled and I cannot find anything that matches my needs, which are: admin can provide templates (backgrounds) for the cards users can customise the card with text (font style and colour) users can upload their own photos (minor editing e.g. crop) to insert into the cards user can purchase a printed card via credit card payment Seeing as this kind of e-Commerce has been around for a while now, I would have thought there were some systems to purchase that can provide this functionality?

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• how to handle exceptions/errors in php?

  - by fayer

  when using 3rd part libraries they tend to throw exceptions to the browser and hence kill the script. eg. if im using doctrine and insert a duplicate record to the database it will throw an exception. i wonder, what is best practice for handling these exceptions. should i always do a try...catch? but doesn't that mean that i will have try...catch all over the script and for every single function/class i use? Or is it just for debugging? i don't quite get the picture. Cause if a record already exists in a database, i want to tell the user "Record already exists". And if i code a library or a function, should i always use "throw new Expcetion($message, $code)" when i want to create an error? Please shed a light on how one should create/handle exceptions/errors. Thanks

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• How to get comma-separated values in Linq?

  - by Mujtaba Hassan

  I have the query below: var users = (from a in dc.UserRoles join u in dc.Users on a.intUserId equals u.ID join r in dc.Roles on a.intRoleId equals r.ID where r.intClientId == clientID select new UserRoleDetail { ID = a.ID, intUserId = a.intUserId, intRoleId = a.intRoleId, Name =u.FullName, //Here I need comma separated values. intAssignedById = a.intAssignedById, RoleName = r.vchName, Function = u.vchFunction }); I require all the values of "Name =u.FullName" to be comma-separated in a single record group by intRoleId. I mean for every role I need all the usernames in a sigle record comma separated. Any suggestion?

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• RotationAsync with each row in List view

  - by Labeeb P

  Hi, From this answer in stack overflow and the sample project referred there, i got the Idea of RotationAsync, where a progress bar work fine with device rotation. But my problem is, i have a listview with each row there is progress bar. And is there any way to retain the progress while rotation for reach row. Me creating onclicklistener object for the button click listener in getview function of my adapter class. Where its onClick function call the AsyncTask class Since each getview (row) is calling different instant of my AsyncTask, i cannot make it static of single ton class. Any Idea on this. Thanks.

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• Assign bitset member to char

  - by RedX

  I have some code here that uses bitsets to store many 1 bit values into a char. Basically struct BITS_8 { char _1:1; (...) char _8:1; } Now i was trying to pass one of these bits as a parameter into a function void func(char bit){ if(bit){ // do something }else{ // do something else } // and the call was struct BITS_8 bits; // all bits were set to 0 before bits._7 = 1; bits._8 = 1; func(bits._8); The solution was to single the bit out when calling the function: func(bits._8 & 0x128); But i kept going into //do something because other bits were set. I was wondering if this is the correct behaviour or if my compiler is broken. The compiler is an embedded compiler that produces code for freescale ASICs.

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• Vertically center CSS techniques don't work in Chrome

  - by at.

  I've gone through stackoverflow questions and a whole bunch of articles on vertically centering text like the following: http://blog.themeforest.net/tutorials/vertical-centering-with-css/ None of the techniques seem to work with the latest version of Chrome. Is that just the nature of Chrome? My text just always appears at the top. It seems that whenever I use 50% or 100% as values for CSS's height or top, nothing happens. I just need a single line of text vertically centered. line-height isn't helpful because I want it centered in the middle of the browser window... I don't know how tall the browser window is going to be. UPDATE: The problem is apparently Foundation 4. Once I delete the following everything works as expected: <link href="/assets/foundation_and_overrides.css?body=1" media="screen" rel="stylesheet" /> Any idea on how to make it work with Foundation 4?

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• How does C++ free the memory when a constructor throws an exception and a custom new is used

  - by Joshua

  I see the following constructs: new X will free the memory if X constructor throws. operator new() can be overloaded. The canonical definition of an operator new overload is void *operator new(heap h) and the corrisponding operator delete. The most common operator new overload is pacement new, which is void *operator new(void *p) { return p; } You almost always cannot call delete on the pointer given to placement new. This leads to a single question. How is memory cleaned up when X constructor throws and an overloaded new is used?

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• INSERT INTO statement that copies rows and auto-increments non-identity key ID column

  - by AmoebaMan17

  Given a table that has three columns ID (Primary Key, not-autoincrementing) GroupID SomeValue I am trying to write a single SQL INSERT INTO statement that will make a copy of every row that has one GroupID into a new GroupID. Example beginning table: ID | GroupID | SomeValue ------------------------ 1 | 1 | a 2 | 1 | b Goal after I run a simple INSERT INTO statement: ID | GroupID | SomeValue ------------------------ 1 | 1 | a 2 | 1 | b 3 | 2 | a 4 | 2 | b I thought I could do something like: INSERT INTO MyTable ( [ID] ,[GroupID] ,[SomeValue] ) ( SELECT (SELECT MAX(ID) + 1 FROM MyTable) ,@NewGroupID ,[SomeValue] FROM MyTable WHERE ID = @OriginalGroupID ) This causes a PrimaryKey violation since it will end up reusing the same Max(ID)+1 value multiple times as it seems. Is my only recourse to a bunch of INSERT statements in a T-SQL WHILE statement that has an incrementing Counter value? I also don't have the option of turning the ID into an auto-incrementing Identity column since that would breaking code I don't have source for.

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• Form string data url encoded by some browsers .net

  - by nLL

  Hi, i came accross with a peculiar issue on my mobile site. some phones/gateways sends form post data as url encoded and a text such as "hey how are you?" in a form with method post stored in the db as "hey+how+are+you%3f" This is not the issue with many browsers but one single network from USA called Metro. I notice different phone models acting same way so i assue this is an issue with proxy/gateway. would simply putting _msg = HttpUtility.UrlDecode(_msg); solve my problem? any other suggestions? Thanks

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• How to set up a has-many relationship in Cocoa?

  - by SphereCat1

  I'm building a (very) simple FTP app in Cocoa, and I need to store information on the different types of servers that are supported. So, I've created a ServerType class, which stores all of the relevant information about a single type of server. I then have a ServerTypes class which is designed to manage all of the ServerType classes that are created. My question is how to set up the relationship between the two objects. Is there a preferred method to do so? Also, since Objective-C doesn't support non-instance classes, where should I create an instance of ServerTypes that will have to be used throughout the entire program? Or is there a better way to do that? I need it to be KVC compliant so That I can bind one of the ServerType properties to an NSPopupBox. Sorry about the large volume of questions, I'm fairly new to Cocoa and Objective-C. If you need to see code, just ask and I'll be happy to add some. :) SphereCat1

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• Python interpreter invocation with "-c" and indentation issues

  - by alexander

  I'm trying to invoke Python using the "-c" argument to allow me to run some arbitrary python code easily, like this: python.exe -c "for idx in range(10): print idx" Now this code works fine, from within my batch file, however, I'm running into problems when I want to do anything more than this. Consider the following Python code: foo = 'bar' for idx in range(10): print idx this would then give you 0-9 on the stdout. However, if I collapse this into a single line, using semicolons as delimiters, to get the following: foo = 'bar';for idx in range(10): print idx and try to run it using python.exe -c it get a SyntaxError raised: C:\Python>python.exe -c "foo = 'bar';for idx in range(10): print idx" File "<string>", line 1 foo = 'bar';for idx in range(10): print idx ^ SyntaxError: invalid syntax Anyone know how I can actually use this without switching to a separate .py file?

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• Castle Windsor Controller Factory and RenderAction

  - by Bradley Landis

  I am running into an issue when using my Castle Windsor Controller Factory with the new RenderAction method. I get the following error message: A single instance of controller 'MyController' cannot be used to handle multiple requests. If a custom controller factory is in use, make sure that it creates a new instance of the controller for each request. This is the code in my controller factory: public class CastleWindsorControllerFactory : DefaultControllerFactory { private IWindsorContainer container; public CastleWindsorControllerFactory(IWindsorContainer container) { this.container = container; } public override IController CreateController(RequestContext requestContext, string controllerName) { return container.Resolve(controllerName) as IController; } public override void ReleaseController(IController controller) { this.container.Release(controller); } } Does anyone know what changes I need to make to make it work with RenderAction? I also find the error message slightly strange because it talks about multiple requests, but from what I can tell RenderAction doesn't actually create another request (BeginRequest isn't fired again).

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• Build Pipelining and Continuous Integration with Maven and Hudson

  - by Brandon

  Currently the my team is considering splitting our single CI build process into a more streamlined multi-stage process to speed up basic build feedback and isolate different ci concerns. The idea we had was to have each stage exist in Hudson as a different build with the correct maven goal or maven plugin execution, then chain them together using the post-build hooks of Hudson. However to my knowledge, Maven as a build tool mandates that any lifecycle phase which is performed automatically builds every preceding lifecycle phase. This presents a number of problems the most significant of which is that maven is recreating the build resources with each distinct call and not using those of the previous stage. This not only breaks the consistency of the build lifecycle but has much more unnecessary processing overhead. Is there a way to accomplish pipelining with CI using Maven? Assuming there is, is there a way to let Hudson know to use those resources built from the previous stage in the next one?

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• Adding files to the DPR file vs project paths in Delphi 2010

  - by Robert McCabe

  We are just migrating from D7 to D2010 and are having a debate about cleaning up the project paths. We have a number of directories with a large number of Pas files that are included on some project paths, but only a few of the files are actually used by any single project. One option is to eliminate the project paths completely and only have all used files in the dpr. The second option is to keep only the needed files in the dpr and have project paths to the directories for the rest of the files. Is there any argument for one option over the other?

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• Use alternative browser with Subversion URLs

  - by Mark Howard

  We have subversion setup with http access through apache at http ://svn.local/ This provides access through svn clients and the standard svn repository browser. We also have a separate repository browser installed at http ://svn-browser.local/ (fisheye in this case). Is it possible to change the subversion/apache server so that browser requests are redirected to the subversion browser, but requests from svn clients go to the subversion server? Essentially, I'd like to use a single URL to identify a resource in both svn clients and the svn browser and be able to copy the url from a svn client into a web browser to have the enhanced functionality provided by the browser.

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• Is Catching a Null Pointer Exception a Code Smell?

  - by Drew

  Recently a co-worker of mine wrote in some code to catch a null pointer exception around an entire method, and return a single result. I pointed out how there could've been any number of reasons for the null pointer, so we changed it to a defensive check for the one result. However, catching NullPointerException just seemed wrong to me. In my mind, Null pointer exceptions are the result of bad code and not to be an expected exception in the system. Are there any cases where it makes sense to catch a null pointer exception?

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• Python accessing modules from package that is distributed over different directories

  - by chaindriver

  Hi, I have a question regarding one single module that is distributed over multiple directories. Let's say I have these two file and directories: ~/lib/python xxx __init__.py util __init__.py module1.py module2.py ~/graphics/python xxx __init__.py misc __init__.py module3.py module4.py So then in my Python modules, I did this: import sys pythonlibpath = '~/lib/python' if pythonlibpath not in sys.path: sys.path.append(pythonlibpath) import xxx.util.module1 which works. Now, the problem is that I need xxx.misc.module3, so I did this: import sys graphicslibpath = '~/graphics/python' if graphicslibpath not in sys.path: sys.path.append(graphicslibpath) import xxx.misc.module3 but I get this error: ImportError: No module named misc.module3 It seems like it somehow still remembers that there was a xxx package in ~/lib/python and then tries to find misc.module3 from there. How do I get around this issue?

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• MS Access CrossTab query - across 3 tables

  - by Prembo

  Hi, I have the following 3 tables: 1) Sweetness Table FruitIndex CountryIndex Sweetness 1 1 10 1 2 20 1 3 400 2 1 50 2 2 123 2 3 1 3 1 49 3 2 40 3 3 2 2) Fruit Name Table FruitIndex FruitName 1 Apple 2 Orange 3 Peaches 3) Country Name Table CountryIndex CountryName 1 UnitedStates 2 Canada 3 Mexico I'm trying to perform a CrossTab SQL query to end up with: Fruit\Country UnitedStates Canada Mexico Apple 10 20 400 Orange 50 123 1 Peaches 49 40 2 The challenging part is to label the rows/columns with the relevant names from the Name tables. I can use MS Access to design 2 queries, create the joins the fruit/country names table with the Sweetness table perform crosstab query However I'm having trouble doing this in a single query. I've attempted nesting the 1st query's SQL into the 2nd, but it doesn't seem to work. Unfortunately, my solution needs to be be wholly SQL, as it is an embedded SQL query (cannot rely on query designer in MS Access, etc.). Any help greatly appreciated. Prembo.

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• Deploy java (command line) app using Netbeans / ant

  - by Haes

  I've finally managed to create a Netbeans project out of an old standalone (not Web-) Java application which consisted only out of single .java sources. Now I have basically two questions regarding Netbeans Subversion interaction and application deployment: Do you check in all the Netbeans project files into the repository, normally? If I build the project using Netbeans (or ant) I get a .jar file and some additional jar libraries. In order for the app to run properly on the server, some additional config files and directories (log/ for example) are needed. The application itself is a J2SE application (no frameworks) which runs from the command line on a Linux platform. How would you deploy and install such an application? It would also be nice if I could see what version of app is currently installed (maybe by appending the version number to the installed app path). Thanks for any tips.

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• How to not encapsulate Coffeescript

  - by JellicleCat

  I don't know whether all coffeescript compilers wrap their scripts in anonymous functions, but that's what I see Rails doing. How can I disable this encapsulation? I want to put several initializing functions in a single coffeescript file, then call one of them from an on-page <script> tag (so that each page calls a different initializer). This can't be if the initializing functions are encapsulated. Coffeescript initializer functions: initializerA = -> console.log 'foo' initializerB = -> console.log 'bar' On-page code: <script>$(document).ready(initializerA)</script> Sys: coffee-rails 3.2.1, Rails 3.2.3, Ruby 1.9.3

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