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• Where is BuildConfig.DEBUG?

  - by Ollie C

  My project doesn't seem to be aware of this new constant that's apparently auto-generated in Android Tools r17 builds: "Added a feature that allows you to run some code only in debug mode. Builds now generate a class called BuildConfig containing a DEBUG constant that is automatically set according to your build type. You can check the (BuildConfig.DEBUG) constant in your code to run debug-only functions such as outputting debug logs." I've confirmed that this class is not being auto-generated anywhere in my project by the new tools. I deleted all project outputs (including all gen folders) and rebuilt, and only R.java classes are being generated. Why are the tools not generating the BuildConfig class? It may be relevant that I'm using IntelliJ.

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• Embedded MongoDB when running integration tests

  - by seanhodges

  My question is a variation of this one. Since my Java Web-app project requires a lot of read filters/queries and interfaces with tools like GridFS, I'm struggling to think of a sensible way to simulate MongoDB in the way the above solution suggests. Therefore, I'm considering running an embedded instance of MongoDB alongside my integration tests. I'd like it to start up automatically (either for each test or the whole suite), flush the database for every test, and shut down at the end. These tests might be run on development machines as well as the CI server, so my solution will also need to be portable. Can anyone with more knowledge on MongoDB help me get idea of the feasibility of this approach, and/or perhaps suggest any reading material that might help me get started? I'm also open to other suggestions people might have on how I could approach this problem...

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• What is a good practice for handling SQL connections within a WCF call?

  - by Rising Star

  Suppose I want to create a (stateless) WCF service with three methods exposed on an endpoint: performSqlOperationA(), performSqlOperationB(), and performSqlOperationC(). Each method inserts data into a SQL database. The way I've seen things done at my office, each method would begin with code to initialize a SqlConnection object. Each method would end with code to safely dispose it. What is a good practice for coding these WCF methods so that the SqlConnection object is initialized and disposed in each method without having to do these things in each method? I know that I can have the connection initialized in the constructor for the class for the WCF methods, but I don't know about disposing it... The calls cannot be wrapped in a using block. One solution I'm familiar with is PostSharp, which allows me to set an attribute which causes specific code to automatically run at the beginning and end of each method call, but it would be greatly preferable to do this with only the .net framework.

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• copy child collection to another object

  - by Bogdan

  Hi everyone, I have a one-to-many relationship between Part and Params (a "Part" has many "Params). I'm trying to do something naive like this: Part sourcePart = em.find(Part.class, partIdSource); Part destPart = em.find(Part.class, partIdDest); Collection<Param> paramListSource = sourcePart.getParamList(); destPart.setParamList(paramListSource); Basically I want to copy all the parameters from sourcePart to destPart. Hopefully the persistence provider will automatically set the right foreign keys in the Param table/entity. The above code will obviously not work. Is there any easy way of doing this, or do I have to do create a new collection, then add each Param (creating new Param, setting attributes, etc) ?

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• Is there a variable in Rails that equates to the template that is being rendered?

  - by Sean Ahrens

  I can do request.path_parameters['controller'] and request.path_parameters['action'], but is there anything like request.path_parameters['template'] so I can discern which template file (such as index.html.erb) is being rendered? I'm writing a method that automatically sets the body id to the template being rendered, for easy css manipulation: class ApplicationController < ActionController::Base ... after_filter :define_body_selector ... def define_body_selector # sets @body_id to the name of the template that will be rendered # ie. if users/index.html.erb was just rendered, @body_id gets set to "index" @body_id = ??? end ...

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• windows popup close before display dos . xls

  - by Edgar Trejo

  Good morning! I'm trying to display a document. Xls in a popup window on IE8 but before showing the window closes automatically. Here I show the code javascript: function hacerExportarExcel(){ var url = contextPath + "/exportarCarteraCreditoExcel.do" window.setTimeout("window.open('"+url+"', '_blank', 'width=950,height=500,scrollbars=yes')",1000); } action: try { response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-Disposition", "inline; filename=ConsultaCartera.xls"); consulta.setPdf(response.getOutputStream()); administracionCreditoConsulta.exportarCarteraCreditoExcel(consulta); } catch (Exception e) { logger.logError(e); } finally { response.getOutputStream().flush(); response.getOutputStream().close(); } Can someone please help me! Thanks!

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• www disappear when using Name-based virtual host.

  - by Tianzhou Chen

  Below is my config file NameVirtualHost 12.34.56.78:80 ServerAdmin [email protected] ServerName domain1.com ServerAlias www.domain1.com DocumentRoot /srv/www/domain1.com/public_html1/ ErrorLog /srv/www/domain1.com/logs/error.log CustomLog /srv/www/domain1.com/logs/access.log combined ServerAdmin [email protected] ServerName domain2.com ServerAlias www.domain2.com DocumentRoot /srv/www/domain2.com/public_html1/ ErrorLog /srv/www/domain2.com/logs/error.log CustomLog /srv/www/domain2.com/logs/access.log combined The thing is when I put www.domain1.com into browser, it will be automatically changed to domain1.com. However, if I put www.domain2.com, the address remains the same. I don't know why this happens. BTW, I haven't put .htaccess file under their document root. Thanks for your advice! Tianzhou

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• Using the system localizations on iPhone

  - by nevan

  I want to make a back button for a navigation controller with the title "Back" instead of the title of the previous controller. I'm using this code: UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Back", @"Back") style:UIBarButtonItemStyleBordered target:nil action:nil]; self.navigationItem.backBarButtonItem = backButton; I'd like to be able to skip localizing the "Back" string in my app (since I can only localize it in a limited number of languages). If I give my navigation controller no title, the back button will be automatically localized into whatever the language the user has chosen, so the system has translations of "Back" in many languages. Is there a way to access the localizations that are already present in the system and use them myself? These are things like "Back", "Cancel", "Done" and so on, which show up when creating one of the standard system buttons.

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• P-invoke call fails if too much memory is assigned beforehand

  - by RandomEngy

  I've got a p-invoke call to an unmanaged DLL that was failing in my WPF app but not in a simple, starter WPF app. I tried to figure out what the problem was but eventually came to the conclusion that if I assign too much memory before making the call, the call fails. I had two separate blocks of code, both of which would succeed on their own, but that would cause failure if both were run. (They had nothing to do with what the p-invoke call is trying to do). What kind of issues in the unmanaged library would cause such an issue? I thought that the managed and unmanaged heaps were supposed to be automatically separated. The crash as far as I can tell is happening in a dynamically loaded secondary DLL from the one p-invoked into. Could that have something to do with it?

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• How to get global access to enum types in C#?

  - by lala

  This is probably a stupid question, but I can't seem to do it. I want to set up some enums in one class like this: public enum Direction { north, east, south, west }; Then have that enum type accessible to all classes so that some other class could for instance have: Direction dir = north; and be able to pass the enum type between classes: public void changeDirection(Direction direction) { dir = direction; } I thought that setting the enum to public would make this automatically possible, but it doesn't seem to be visible outside of the class I declared the enum in.

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• Is it really wrong to version documents using CouchDB's behaviour?

  - by Tomas Sedovic

  This is one of those "I know I shouldn't do this but it's oh so convenient." questions. Sorry about that. I plan to use CouchDB for storing a bunch of documents and keeping their entire revision history. CouchDB does the versioning automatically, but it is strongly discouraged for programmer's use: "You cannot rely on document revisions for any other purpose than concurrency control." From what I've found on the CouchDB wiki, the versions can get deleted either during compaction or during replication. As far as I can tell, Compaction must always be triggered manually and Replication occurs only when there's more than one database server. The question is: if I won't run compaction and will use only single database instance for my documents, can I just use CouchDB's document versioning and expect it to work? What other problems I might run into? E.g. does not running compaction hurt the performance or consume significantly more disk space (than if I did handle the versioning manually)?

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• Update Facebook Page's status using pyfacebook

  - by thornomad

  I am attempting to add functionality to my Django app: when a new post is approved, I want to update the corresponding Facebook Page's status with a message and a link to the post automatically. Basic status update. I have downloaded and installed pyfacebook - and I have read through the tutorial from Facebook. I have also seen this suggestion here on SO: import facebook fb = facebook.Facebook('YOUR_API_KEY', 'YOUR_SECRET_KEY') fb.auth.createToken() fb.login() # THIS IS AS FAR AS I CAN GET fb.auth.getSession() fb.set_status('Checking out StackOverFlow.com') When I get to the login() call, however, pyfacebook tries to open lynx so I can login to Facebook 'via the web' -- this is, obviously, not going to work for me because the system is supposed to be automated ... I've been looking, but can't find out how I can keep this all working with the script and not having to login via a web browser. Any ideas?

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• Implementing Transparent Persistence

  - by Jules

  Transparent persistence allows you to use regular objects instead of a database. The objects are automatically read from and written to disk. Examples of such systems are Gemstone and Rucksack (for common lisp). Simplified version of what they do: if you access foo.bar and bar is not in memory, it gets loaded from disk. If you do foo.bar = baz then the foo object gets updated on disk. Most systems also have some form of transactions, and they may have support for sharing objects across programs and even across a network. My question is what are the different techniques for implementing these kind of systems and what are the trade offs between these implementation approaches?

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• Python 3.0 - Dynamic Class Instance Naming

  - by Jon

  I want to use a while loop to initialize class objects with a simple incremented naming convention. The goal is to be able to scale the number of class objects at will and have the program generate the names automatically. (ex. h1...h100...h1000...) Each h1,h2,h3... being its own instance. Here is my first attempt... have been unable to find a good example. class Korker(object): def __init__(self,ident,roo): self.ident = ident self.roo = roo b = 1 hwinit = 'h' hwstart = 0 while b <= 10: showit = 'h' + str(b) print(showit) #showit seems to generate just fine as demonstrated by print str(showit) == Korker("test",2) #this is the line that fails b += 1 The errors I get range from a string error to a cannot use function type error.... Any help would be greatly appreciated.

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• Deploying plugins for Internet Explorer

  - by Techpriester

  Hi everybody. I'm looking for a way to deploy an Internet Explorer plugin for SVG-rendering without manually installing it on every client machine. Is there a way to use some ActiveX voodoo stuff to automatically install a plugin? I have no reliable information about the IE versions that are used on the client side so I assume the worst: IE6. To make things even harder, the users probably don't have administrator privileges on the client machines. The whole thing happens in an enclosed local network, so security considerations are entirely secondary. It also does not really matter which actual plugin it will be, anything that can render SVG and run Javascript on it will do just fine. I can't think of anything to make this work so I'm desperate for help here...

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• Does a rollback still occur if I use begin...rescue and an error occurs?

  - by codeman73

  I've got some strange errors happening in my rails app and I'm trying to log better errors instead of the whole stack of passenger stuff that I don't care about. I thought I would do this with a Rescue clause and explicit error handling, like logging the params hash. But I'm concerned if this would interrupt any rollback that is happening. For that matter, I'm assuming rollbacks automatically occur when an error occurs as part of the normal rails error handling, but I haven't been able to find that documented anywhere. I'm using Dreamhost with MySQL, so I thought transactions and rollbacks were happening there.

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• How do I go about embedding a youtube chromeless player without adding controls?

  - by ndthl

  I am creating an online experiment. It involves participants watching a video then answering a questionnaire. I would like to embed a chromeless youtube video which plays automatically on page load, does not have controls for participants to play around with, and loads the next page once the video finishes. Now the autoplay/forward to next page functions are secondary and I'm not too concerned if I can't get them working. However I am very interested in how to embed a chromeless player. I have gone to the google playground but this code already has the controls attached. I am not very experienced at coding so I do not know what to remove from the code for none of the custom controls on the left to be displayed. Is anyone able to help me? Thanks, Wil

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• I'm using the jQuery .scroll() function, why can't I override its effects with another function?

  - by Jason Rhodes

  I'm using the jQuery .scroll() function to make a certain element fade to 0.2 opacity. Since there is no native "scrollstop" indicator, I decided to make the element fade back to 1.0 opacity on hover. However, it doesn't work. Here's my code: $(document).ready(function() { $(window).scroll(function() { $("#navlist").animate({ opacity: 0.2 }, 2000); }); $("#navlist").hover( function() { $(this).animate({ opacity: 1 }, 500); }, function() { $(this).animate({ opacity: 1 }, 500); // just to be safe? } ); }); When I scroll, the #navlist element fades, but when you hover over it nothing happens. But if you refresh the page when you're half way down, the element automatically fades as soon as you refresh, before I've scrolled, and if you try to hover to fade it back in, nothing happens. Any thoughts?

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• Embed Git Commit Log in Rails App?

  - by Andrew

  So, I have a 'development blog' in a rails app I'm working on right now. I'm using Git for version control and deployment (although right now I'm the only person working on it). Now, when I make changes in Git I put a pretty decent log entry about what I've done. I'd love to have the Git commit log automatically posted to the development blog -- or otherwise available for others to read within the deployed site. Is there an automated way to pull the Git Commit Log into a view in a rails app?

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• Format Text Field While User Enters Data

  - by Matt

  Hello, so here is what I am trying to do. I have a birth date text field, while the user in puts text i want the field to automatically put it in the form YYYY-MM-DD. Basically while the user types it replaces the Y's M's and D's but leaves the hyphen. I am not sure how to go about this i may need a mask or something. I know this is where some of the formatting can be done - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{ Any help would be of much help

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• jQuery Dialog theme not being applied

  - by Tim

  I'm using jquery-1.4.2.min.js and jquery-ui-1.8.1.custom.min.js. According to Firebug, both minimized scripts have been loaded. They both appear in the dropdown list on Firebug's Scripts tab. The dialog is launching, but there's no background and so the text below it shows through, and there's no "window" stuff at all, no titlebar, no X button. Just the floating/draggable text with a -close- link at the top left corner. I was under the impression from reading these pages http://jqueryui.com/demos/dialog/ http://jqueryui.com/themeroller/ that the UI theme-driven appearance would be automatically applied to the dialog when it was invoked using this barebones call: $('#dialog').dialog() I would be grateful for suggestions on how to troubleshoot this. Thanks

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• Does Python Django support custom SQL and denormalized databases with no Foreign Key relationships?

  - by Jay

  I've just started learning Python Django and have a lot of experience building high traffic websites using PHP and MySQL. What worries me so far is Python's overly optimistic approach that you will never need to write custom SQL and that it automatically creates all these Foreign Key relationships in your database. The one thing I've learned in the last few years of building Chess.com is that its impossible to NOT write custom SQL when you're dealing with something like MySQL that frequently needs to be told what indexes it should use (or avoid), and that Foreign Keys are a death sentence. Percona's strongest recommendation was for us to remove all FKs for optimal performance. Is there a way in Django to do this in the models file? create relationships without creating actual DB FKs? Or is there a way to start at the database level, design/create my database, and then have Django reverse engineer the models file?

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• how to deploy web application directly from git master branch

  - by mobile.linkr

  For educational purpose, I am writing a server instance in GCE(google compute engine) to serve a few web apps mostly (to be) written in Dart and Polymer. My workflow is, when my students log-in the server above, they will automatically fork those web apps into their own registries in their own server instances for further development. My issues are, How to serve web applications(they are git registries as well) in GCE like Github Pages? Is it possible to manipulate Github Pages to serve web apps mostly using Dart and Polymer packages? Thanks in advance.

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• Implementing logout function

  - by Nitish Kumar

  Hi, I am working on my final year project which is an web based application. I want to implement logout function in that project. But don't know how to do that. Also I want to implement auto logout functionality i.e. after a particular time period say after 20 minutes a user will be automatically logged out if he/she does not perform any action during this period. A message should be displayed to the user "Sorry, Your session has expired Please login again". How to do that?

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• Screen recorder for tracking back your steps while debugging?

  - by hstoerr

  I am wondering whether there is a screen recorder that is usable for checking what exactly you did a couple of minutes ago while debugging, or just checking what value for a variable was displayed the last time you hit that breakpoint etc. (Of course this latter question would be something terrific for an IDE to implement, but I've never seen something like that so far. :-) For this you would need a screen recorder that could record all day and preferably automatically delete the recording the recording that is, say, older than an hour. Probably the recording format should be something that is good for screen recording instead of natural scenes. Do you know a screen recorder like that or at least one that comes close?

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