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• Python questions from beginner

  - by ChrisC

  I'm thinking about rewriting an MS Access db I wrote years ago into a stand-alone Python app. Other than a college class called "Intro to C++" (console only, with OOP concepts) and the Access db itself, I have no experience, so I need to ask if the basis for my decision to go with Python is correct. Is it true that: 1) Python is relatively easy to pick up? 2) Python apps can run as "portable" (ie from one directory, no registry needs, nothing needs to be pre-installed on a Windows PC) as long as I use an embedded db?

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• Django queries: Count number of objects with FK to model instance

  - by Chris Lawlor

  This should be easy but for some reason I'm having trouble finding it. I have the following: App(models.Model): ... Release(models.Model): date = models.DateTimeField() App = models.ForeignKey(App) ... How can I query for all App objects that have at least one Release? I started typing: App.objects.all().annotate(release_count=Count('??????')).filter(release_count__gt=0) Which won't work because Count doesn't span relationships, at least as far as I can tell. BONUS: Ultimately, I'd also like to be able to sort Apps by latest release date. I'm thinking of caching the latest release date in the app to make this a little easier (and cheaper), and updating it in the Release model's save method, unless of course there is a better way. Edit: I'm using Django 1.1 - not averse to migrating to dev in anticipation of 1.2 if there is a compelling reason though.

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• Blackberry Eclispe plugin and emulator

  - by gmcalab

  So I installed the following installation packages to develop Blackberry apps using the included emulators. I first installed them on a macbook pro, virtualizing windows 7 x86 with vmware. Everything worked fine, I created a quick HelloWorld app and it compiled and fully ran in the emulator. I did no other configuration. So I went to install this on my desktop PC with Windows 7 x64. I installed the exact same items. When I choose to run with the Blackberry Emulator, nothing happens. Any ideas? Here's the file list: BlackBerry_JDE_PluginFull_1.0.0.67 (This includes Eclispe) jdk-6u18-windows-i586

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• Tutorials for .NET database app

  - by ChrisC

  My earlier question and comments are at "What is ADO.NET". This shows my level of knowledge about c# database apps. Can someone point me to tutorials and/or primers that can help me proceed from where I am (also stated in other question)? I've looked and all I've found are tutorials that talk about general db basics (ie, not helping with VS/C#), or talk about connecting to existing SQL db's. I need help setting one up and configuring it, as well as help on how to create and use queries to test the db schema.

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• What advantages does TFS 2010 have over Axosoft OnTime?

  - by Russell

  I am currently creating a business case for rolling out TFS 2010 as our source control and bug/release management tool. We currently use OnTime for our bug tracking software and subversion for our SCM. I was wondering what advantages TFS 2010 has over OnTime? I have done some thinking so far and would love to hear responses: TFS 2010 allows linking changesets-work items-builds TFS 2010 provides greater customisation of workflow than OnTime TFS 2010 is integrated into the Visual Studio IDE - This requires less apps to be open and less window flicking Thanks in advance.

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• Quickest way to make a web app for iPhone

  - by Douglas

  I am looking to make a iPhone app for a simple anonymous discussion website I launched this week (blurba.com). I would like it to be native, available for free download in the app store. I am looking for the fastest, easiest way to do this. I have been looking at these options. 1. Build a native app in Obj-C 2. Build with JQ touch, use PhoneGap to make it native I am more than open to other ideas (maybe frameworks I don't know about, to make this easier?) NEEDS: Ajax requests via GET and POST. Data received back in JSON and displayed. PS. I have NO experience making iPhone web apps, but do have basic experience with iPhone development THANKS,

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• Advice on HTTPS connections using Ruby on Rails

  - by user502052

  Since I am developing a "secure" OAuth protocol for my RoR3 apps, I need to send protected information over the internet, so I need to use HTTPS connections (SSL/TSL). I read How to Cure Net::HTTP’s Risky Default HTTPS Behavior aticle that mentions the 'always_verify_ssl_certificates' gem, but, since I want to be more "pure" (it means: I do not want to install other gems, but I try to do everything with Ruby on Rails) as possible, I want to do that work without installing new gems. I read about 'open_uri' (it is also mentioned in the linked article: "open_uri is a common exception - it gets things right!") that is from the Ruby OOPL and I think it can do the same work. So, for my needs, is 'open_uri' the best choice (although it is more complicated of 'always_verify_ssl_certificates' gem)? If so, can someone help me using that (with an example, if possible) because I have not found good guides about?

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• Connecting to SQL Server with Visual Studio Express Editions

  - by tlianza

  I find it odd that in Visual C# 2008 Express edition, when you use the database explorer, your options are: 1) Microsoft Access 2) SQL Server Compact 3.5, and 3) SQL Server Database File. BUT if you use Visual Web Developer 2008 Express, you can connect to a regular SQL Server, Oracle, ODBC, etc. For people developing command-line or other C# apps that need to talk to a SQL Server database, do you really need to build your LINQ/Data Access code with one IDE (Visual Web Developer) and your program in another (Visual C#)? It's not a hard workaround, but it seems weird. If Microsoft wanted to force you to upgrade to Visual Studio to connect to SQL Server, why would they include that feature in one of their free IDEs but not the other? I feel like I might be missing something (like how to do it all in Visual C#). Thanks! Tom

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• super dealloc error using multiple table view calsses

  - by padatronic

  I am new to Iphone apps and I am trying to build a tab based app. I am attempting to have a table ontop of an image in both tabs. On tab with a table of audio links and the other tab with a table of video links. This has all gone swimmingly, I have created two viewControllers for the two tables. All the code works great apart from to get it to work I have to comment out the super dealloc in the - (void)dealloc {} in the videoTableViewController for the second tab. If I don't I get the error message: FREED(id): message numberOfSectionsInTableView: sent to freed object please help, i have no idea why it is doing this...

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• Finding App Id under .ipa or .app

  - by Rafael Oliveira

  I'm building an application that search and recognizes any iPhone apps that user has in his/her computer. I would like to know a way to "extract" the id of the application from the .ipa file. I was trying to do the recognition using only the App File Name, but I discovered that the File Name is not the name of the app in Apple Store. Live Poker 6K Free by Zynga != Live Poker 3.7.ipa The id i'm talking about is the app id, like in, http://itunes.apple.com/app/live-poker-6k-free-by-zynga/id354901953?mt=8 the id is 354901953. Does any body has a clue how can I manage to find this information?

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• How to casue a CppUnit test to fail - from C?

  - by mawg

  I'd like to have an equivalent to CPPUNIT_ASSERT, CPPUNIT_ASSERT_MESSAGE or `CPPUNIT_FAIL' which I can call from some common C code. Our code is a mix of C and C++. Some older apps and those with specific requirements are coded in C and most, especially newer, are coded in C++. However, a lot of project-agnostic, common code, such as memory buffer pools, debug tracing, etc are coded in C. When testing a C++ app in CppUnit, I'd to be able to sprinkle some ASSSERT()s which would cause any running CppUnit test to fail. Maye something like: if testing if running in debugger (Eclipse) then asm("int3"); // stop the debugger, even if no breakpoint at this line else if running CppUnit test - fail the test and move on to next else trace to log file Most of that can be run by wrapping a macro around a few #ifdefs, but I am not sure how I would cause a CppUni test to fail from C code. Can it be done?

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• Why not standard Android emulators?

  - by Gerry

  I'm new to Android, but have published iphone and bberry apps. I see that I have to create an emulator using the SDK, before I can write and test an app. Why are there no default emulators? Why not at least a Nexus one, or HTC hero emulator shipped with the product? Sure its supposed to be flexible, but why not make it easy to create hello world and play around with a virtual Android phone? Both blackberry and iphone come with default simulators when you download the sdk. Thanks, Gerry

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• How can I deploy my .NET app to Amazon EC2?

  - by Khash

  I have a .NET Windows service and a .NET Web Application that I would like to deploy to my Amazon EC2 Windows 2008 instances. At this point, all I need to do is to copy the zipped files across to the EC2 box and remote desktop to the EC2 instance and finish the deployment. In order to do this, I have tried LogMeIn Hamachi2 to create a P2P VPN and use RoboCopy to copy the files, however it seems Hamachi doesn't work on Windows EC2. What is your solution for deploying your .NET apps to Windows EC2 instances? I want to avoid running an FTP server on the box just to get my files up on the server and don't have a VPN server (like OpenVPN) running to run a cloud based VPN solution. Perhaps I can find a simple way of using Amazon S3 as a strategy? Any ideas? Suggestions?

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• Is there a J2SE sensor API?

  - by Martin Strandbygaard

  Does anyone know of a "standardized" Java API for working with sensors, and which is closely tied to J2ME as is the case with JSR 256? I'm writing a Java library for interfacing with a sensor network consisting of several different types of sensors (mostly simple stuff such as temperature, humidity, GPS, etc.). So far I've rolled my own interface, and users have to write apps against this. I would like to change this approach and implement a "standard" API so that implementations aren't that closely tied to my library. I've looked at JSR 256, but that really isn't a great solution as it's for J2ME, and my library is mostly used by Android devices or laptops running the full J2SE.

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• Good Guide For Web App Security?

  - by QAH

  Hello! I am pretty good on making web applications and I know how to transfer data to and from client/server, etc. I need some help though learning how to make the data exchanges more secure. That is the reason why I feel kind of scared to publish any web app I make. I wanted to know what are some good guides to help you understand and learn how to secure data transfer with your web application? Things like better authentication for example and making better logins. You can post any suggestion, but just for your information, I mainly code my web apps with Javascript and PHP. Also, I transfer my data using JSON or XML. Thanks a lot

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• How to configure SQLite db in Visual Studio

  - by ChrisC

  I've messed with Access a little bit in the past, had one class on OO theory, and one class on console c++ apps. Now, as a hobby project, I'm undertaking to write an actual app, which will be a database app using System.Data.SQLite and C#. I have the db's table structure planned. I have System.Data.SQLite installed and connected to VS Pro. I entered my tables and columns in VS, but that's where I'm stuck. I really don't know how to finish the db set up so I can start creating queries and testing the db structure. Can someone give me guidance to online resources that will help me learn how to get the db properly set up so I can proceed with testing it? I'm hoping for online resources specific to beginners using C# and System.Data.SQLite, but I'll use the closest I can get. Thanks.

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• Running your own GAE server

  - by h2g2java

  The question http://stackoverflow.com/questions/2505265/how-difficult-is-it-to-migrate-away-from-google-app-engine triggered me to think about this issue again. I have read of someone running, production-wise, Google app engine development version on their own server. My questions are: Are there any security issues running GAE development on your own server in production mode and exposing it to the www? If so how to mitigate them? Can GAE dev be run on Amazon? Is it possible to port my GAE apps running on Google servers to a GAE running on Amazon, without code changes, but without changing any reference in using other gdata services such as google docs, youtube, gmail, etc. How to configure GAE dev server to use my own hadoop? Or to use Amazon's hadoop?

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• MS Access 2003 - Help understanding the structure of mdb, mde and be.....

  - by Justin

  Hi. I was just wanting some explanation as to what is going on once you have split your tables out into a back end file, and set an mde out for use. When a user accesses the mde, is the mdb still required to get to the tabes (or in order to make it work)? Let say I put these access apps on a shared drive for folks to use. If I split the be end on to the shared drive, and placed the mde on the shared drive, would I the mdb have to exist for that version mde to work (communicate with the tables)? Or does the mde sort of speak to the mdb which speaks to the tables? Hope this question makes sense. Thanks

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• Ajax Enabled WCF Service Javascript issue...

  - by Captain Insano

  I'm a noob working with Ajax-Enabled WCF Services... Right now I have an AJAX service which calls a different WCF service that is using wsHttpBinding. The WCF wsHttpBinding service lives in a different web app on the same IIS6 server. The AJAX javascript proxy is only created when I enable anonymous access on the app hosting the AJAX service. If I remove anonymous access, IE6 bombs with an 'Undefined' error when call the AJAX proxy. In a nut shell, my AJAX service sends a request back to IIS (same domain/app), and while on the server it sends a WCF service request for data on a different app on the same IIS server. The service returning data is setup with Windows authentication, wsHttpBinding, and security mode is set to message. Any ideas? Both apps have are using windows authentication.

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• Open source alternative to WebEx WebOffice?

  - by Dieseltime

  I have a client who has been using WebOffice (from WebEx) for a variety of tasks within their small organization. The problem is that they only really need a small subset of the features WebOffice provides (Contact list, Database, and Document Storage). They've asked me to develop a website focused on these three features with the rationalization that this should be more cost-effective, since they currently aren't using many of the features of WebOffice they pay for. What are some open-source alternatives that I could implement for them? Sharepoint sounds like it would be too bloated and Google Apps may not be as collaborative as they would like.

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• HTC Sense UI / Sprint on HTC Evo

  - by fordays

  Hey. Longtime lurker, first time poster. I just got a HTC Evo 4G from Google i/o. Its a great device, but I don't like how Sprint and HTC got replaced all of the native apps that were added on after 2.0 such as Gallery. The Gallery app on the phone uses flickr and facebook connect. I want to sync my Picasa albums. How can i get put the true Google applications on this device?

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• Android: No icon for Notification

  - by Omer

  Hello, I wanted to create a notification without the icon in the status bar (the state that is not expanded). I tried the custom expanded view and set the icon for this view only. But it did not work. When I give 0 as icon to the constructor, the icon disappears but notification also does not appear in the expanded view. Notification notification = new Notification(0, "", 0); I tried a lot of combinations but didn't come out with a solution. By the way, I know it is working because I saw this feature in some apps. Thanks.

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• Getting Error "Namespace Name "Contacts" Does Not Exists" in spite of using using "Google.GData.C

  - by Pari

  I want to create Contact on Google Apps. I am Using this API And referring this link In below code i am using "Using Google.GData.Contacts" : using Google.GData.Contacts; // Using Google.GData.Contacts using Google.GData.Client; using Google.GData.Extensions; using Google.Contacts; // at this place i am getting error Error: The type or namespace name 'Contacts' does not exist in the namespace 'Google' (are you missing an assembly reference?) I have included Google.GData.Contacts API. But still it is giving Error. Can anyone tell me why this is happening? m i missing any Assembly reference? I want to use: Contact newContact = new Contact(); newContact.Title.Text = "Liz Doe"; "Contact" does not exist in Either "Google.GData.Contacts" or "Google.GData". Is there any other way to use it?

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• LinearLayout of a WebView and a Button.

  - by Timmmm

  Hi, I recently struggled with an apparently simple Android layout: I wanted a WebView above a Button. It worked fine with the following parameters: WebView: Height: wrap-content Weight: unset (by the way, what is the default?) Button: Height: wrap-content Weight: unset However if the web page became too big it spilled out over the button. I tried various combinations of weights and heights, and all except one either completely hide the button, or partially cover it. This is the one that works (copied from http://code.google.com/p/apps-for-android/source/browse/trunk/Samples/WebViewDemo/res/layout/main.xml): WebView: Height: 0 Weight: 1 Button: Height: wrap-content Weight: unset If you change any of those, e.g. give button a weight or change the WebView height to wrap-content then it doesn't work. My question is: Why? Can someone please explain what on Earth the android layout system is thinking?

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• What is node.js?

  - by Jeffrey

  I don't fully get what node.js is all about. Maybe it's because I am mainly a web based business app developer. Can someone please explain what it is and the use of it? Thanks. My understanding so far is that: The programming model is event driven, especially the way it handles IO. It uses javascript and the parser is V8. It can be easily used to create concurrent server apps. Are my understandings correct? If yes, then what are the benefits of evented IO, is it just more for the concurrency stuffs? Also is the direction of node.js to become a framework like, javascript based (v8 based) programming model?

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