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• Stack memory in Android

  - by Matt

  I'm writing an app that has a foreground service, content provider, and a Activity front end that binds to the service and gets back a List of objects using AIDL. The service does work and updates a database. If I leave the activity open for 4-8+ hours, and go to the "Running Services" section under settings on the phone (Nexus One) an unusually large amount of memory being used is shown (~42MB). I figure there is a leak. When I check the heap memory i get Heap size:~18MB, ~2MB allocated, ~16MB free. Analyzing the hprof in Eclipse MAT seems fine, which leads me to theorize that memory is leaking on the stack. Is this even possible? If it is, what can I do to stop or investigate the leak? Is the reported memory usage on the "Running Services" section of android even correct (I assume it is)? Another note: I have been unable to reproduce this issue when the UI is not up (with only the service running)

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• Interfacing my application with existing authentication systems

  - by Karan Bhangui

  I'm writing a web based application that will have its own authorization/authentication mechanism (traditional cookie/session based user/pass). However, depending on the organization that licenses the software, I want them to be able to plug in their own existing internal authentication system as a way to replace mine. Ideally, they'd have to run as little code as possible on their end; I'm trying to make this a mostly hosted service. I'm aware of the existence of OAuth, but don't entirely understand how I would go about implementing the system at a higher level. Any tips would be appreciated.

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• Google suggest API does not work with Chinese locale

  - by SadSido

  Hi, everyone! I have a problem with Google suggest API when using Chinese locale. I am picking Chinese hieroglyphs at random and use the REST API to retrieve suggestions. Unfortunately, Google always return an empty list of suggestions (I am completely sure, that I convert my request in utf-8, and it is working fine with other languages, ex. Russian): Sample request: http://suggestqueries.google.com/complete/search?qu=%E9%80%9F Google answer: window.google.ac.h(["?",[]]) Does anyone know how to retrieve suggestions for Chinese locale? Maybe I am missing some flags or something? Maybe there is an official document from Google, saying that Chinese is not supported? And are there any people from China, using Google toolbar? Does it really work? I'd appreciate any help! If it matters, I am writing a simple WinAPI application, using C++...

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• Access DotNetPanel/WebsitePanel Enterprise Server from outside the loopback address

  - by Ryan French

  Hi Peoples, I am currently investigating integration of DotNetPanel/WebsitePanel with a website that is running ColdFusion. The issue I have come across is that it seems WebsitePanel only allows access to the Enterprise Server (where the web services are that I need access to) when the request is coming from the same physical machine (i.e. on the loop-back address 127.0.0.1). This unfortunately doesnt really work out too well with our current setup as we have our ColdFusion server running on one machine and WebsitePanel running on another. Does anyone have any suggestions as to how we can change this? Currently we are investigating writing a transparent proxy server that will sit on the portal machine and pass requests between the two sites, but that is less than ideal.

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• Asterisk AGI framework for IVR; Adhearsion alternative?

  - by tedbehling

  I am trying to get started writing scalable, telecom-grade applications with Asterisk and Ruby. I had originally intended to use the Adhearsion framework for this, but it does not have the required maturity and its documentation is severely lacking. AsteriskRuby seems to be a good alternative, as it's well documented and appears to be written by Vonage. Does anyone have experience deploying AGI-based IVR applications? What framework, if any, did you use? I'd even consider a non-Ruby one if it's justified. Thanks!

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• Missing output when running system command in perl/cgi file

  - by aladine

  I need to write a CGI program and it will display the output of a system command: script.sh echo "++++++" VAR=$(expect -c " spawn ssh -o StrictHostKeyChecking=no $USER@$HOST $CMD match_max 100000 expect \"*?assword:*\" send -- \"$PASS\r\" send -- \"\r\" expect eof ") echo $VAR echo "++++++" In CGI file: my $command= "ksh ../cgi-bin/script.sh"; my @output= `$command`; print @output; Finally, when I run the CGI file in unix, the $VAR is a very long string including \n and some delimiters. However, when I run on web server, the output is ++++++ ++++++ So $VAR is missing when passing in the web interface/browser. I know maybe the problem is $VAR is very long string. But anyway, is there anyway to solve this problem except writing the output to a file then retrieve it from browser? Thanks if you are interested in my question.

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• Compiler is able to find function without matching .h file is updated?

  - by Maxim Veksler

  Hello Friends, I'm writing a C University project and stumbled upon a compiler behavior which I don't understand. In this file http://code.google.com/p/openu-bsc-maximveksler/source/browse/trunk/20465/semester/tasks/maman14/alpha/maman14/assembler/phaseOne.c?r=112 I've added a call to function named freeAsmInstruction(). This function is defined in file named lineParser.c, yet I haven't updated the matching lineParser.h header file to include this function declaration. Why does this code compile? I would expect that gcc would fail to compile phaseOne.c until the correct lineParser.h is updated with the declaration of freeAsmInstruction(). I would appreciate an explanation. Thank you, Maxim

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• Dictionary with delegate or switch?

  - by Samvel Siradeghyan

  Hi, I am writing a parser, which call some functions dependent on some value. I can implement this logic with simple switch like this switch(some_val) { case 0: func0(); break; case 1: func1(); break; } or with delegates and dictionary like this delegate void some_delegate(); Dictionary<int, some_delegate> some_dictionary = new Dictionary<int, some_delegate>(); some_dictionary[0] = func0; some_dictionary[1] = func1; some_dictionary[some_value].Invoke(); Are this two methods equal and which is preferred? Thanks.

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• Extending Ruby, calling a function from C

  - by ThePower

  Hi, I'm writing an app that calls ruby code from c. I am having a little difficulty and wondered if anyone could point me in the rite direction. I currently have in my C. #include ruby.h main() { ruby_init(); rb_require("myRubyFile"); rb_funcall(rb_module_new(), rb_intern("RubyFunction"), 0, NULL); } My ruby file is in the same directory as my c file and is called myRubyFile.rb and contains a definition of the function RubyFunction(). This is a cut down of what I actually want to do, just making it more readable for others. I just require some feedback as to whether this is the correct method to call ruby code from my c file. Regards

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• Vala vapi files documentation

  - by Jordan

  Hi there, I'd like to hack on an existing GLib based C project using vala. Basically what I'm doing is, at the beginning of my build process, using valac to generate .c and .h files from my .vala files and then just compiling the generated files the way I would any .c or .h file. This is probably not the best way, but seems to be working alright for the most part. My problem is that I'm having a hard time accessing my existing C code from my Vala code. Is there an easy way to do this? I've tried writing my own .vapi files (I didn't have any luck with the tool that came with vala), but I can't find any decent documentation on how to write these. Does any exist? Do I need one of these files to call existing C code? Thanks.

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• Table comment length in mysql

  - by azerole

  According to MySQL manual, table comments are limited to 60 characters. I'm designing the schema in MySQL Workbench, which does not enforce this limit, so I end up with writing more than 60 symbols quite often, and this causes the SQL script to fail. To tell the truth I would be quite happy with table comments being internal to my schema (i.e. not exported to the actual database), but Workbench doesn't allow this either. Hence my question: is there a way to increase maximum length of table comment in MySQL to 255?

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• How to "kill" background worker completely?

  - by Ken Hung

  Hi All, I am writing a windows application that runs a sequence of digital IO actions repeatedly. This sequence of actions starts when the user click a "START" button, and it is done by a background worker in backgroundWorker1_DoWork(). However, there are occasions when I get the "This backgroundworker is currently busy......." error message. I am thinking of implementing the following in the code, by using a while loop to "kill" the background worker before starting another sequence of action: if (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); while (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); } backgroundWorker1.Dispose(); } backgroundWorker1.RunWorkerAsync(); I think my main concern is, will the backgroundWorker1 be "killed" eventually? If it will, will it take a long time to complete it? Will this coding get me into an infinite loop?

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• How to secure Java webservices with login and session handling

  - by hubertg

  I'd like to secure my (Java metro) webservice with a login. Here's how I'm planning to do that: Steps required when calling a webservice method are: call login(user,pwd), receive a session token 1.1 remember the token call servicemethod (token, arg1, arg2...) webservice checks if the token is known, if not throw exception otherwise proceed logout or timeout after x time periods of inactivity my questions: 1. what's your opinion on this approach? does it make sense? 2. are there any libraries which take the burden of writing a session handling (maybe with database persistence to survive app restarts) (the solution should be simple and easily usable with Java and .NET clients) thanks!

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• Moving a C# Program to a different language

  - by waiwai933

  I am currently in charge of the development of the second version of program that was created in Microsoft .NET C#. I'm not doing any actual programming, but I am writing the specification for the programmer. I'd like to take it off the .NET codebase, but since Joel said on his blog never to rewrite code, and he does provide good reasoning, I'm inclined to think carefully. So my question is, (1) Are there any easy ways to transition? (Languages like .NET C#) (2) Would you take it off .NET? (3) If so, what language would you use? The reason I want to take it off of .NET is as far as my understanding of .NET, it has to be installed on the client. I'd prefer not to inconvenience my customers when there's a better way.

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• Overlay of multiple colors in ImageJ

  - by nico

  Hi everyone, I'm writing a little plugin for imageJ and I am drawing several regions as an overlay on the image. I'm using this code: ImagePlus imp = getImage(); Overlay ov = new Overlay(); for (int r=0; r<regions.length; r++) { ov.add(regions[r]); } imp.setOverlay(ov); Where regions is an array of Roi. This works as intended and draws the regions in the (hurting to my eyes) standard ImageJ cyan used for overlays. I would like to draw one particular region in another colour, but I cannot seem to find a way to do it. I found that you can change the colour of the whole overlay, but I need two colours in the same overlay. Any ideas? Thanks in advance nico

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• Can somebody explain in a few sentences how these technologies relate: Flex, Flash, Air, ActionScrip

  - by SimpaCar

  I've read about each of these but I still don't understand how they all inter-operate, which are competing technologies, or even really what each of them is distinctly. Flash, Air, Flex... Are these all "containers"/JVM-like runtime environments, in which ActionScript code runs? SWF,FLV,AIR... Are these competing file formats which a Flash, Air or Flex runtime environment executes? ActionScript is a C-like language which compiles to SWF, FLV or AIR files? Sorry, with all the marketing around these terms, some of which are used interchangeably, I am quite lost. Suppose I wanted to write an AIR application... what would that entail? Writing ActionScript, compiling it to a SWF, and then installing the AIR runtime to execute it? How's that different than Flash? If I want to play AIR applications do I need a separate AIR runtime or does Flash execute AIR apps?

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• How to log with Ruby and eventmachine?

  - by Justin

  I'm writing an application using Ruby and the Eventmachine library. I really like the idea of non blocking I/O and event driven systems, the problem I'm running into is logging. I'm using Ruby's standard logger library. Its not that logging takes forever but it seems like something that shouldn't block and it does. Is there a library out there somewhere that extends Ruby's standard logger implementation to be non-blocking or should I just call EM::defer for my logging calls? Is there a way I can make eventmachine do this for me already?

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• google maps export driving directions to kml file - java geogoogle

  - by maiky

  Hi Sorry at first for my poor grammar. I am writing a program in Java using geogoogle (Google Geocoder Java API) http://geo-google.sourceforge.net/ I need from two specific points to get the walking directions between these points and also these info to be exported in a KML file. Do you know how can I do it from Java? Is there an API that I can use? Perhaps making a call from the java program to google and handle the result - but how can it be done? Thanks in advance. PS. Google gives this functionality as i saw here http://www.gringod.com/2008/02/26/save-google-maps-driving-directions/ but I need all these to be called from Java.

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• Linq Where Clauses - Better to stack or combine?

  - by burnt_hand

  When writing a method chain for LINQ, I can do the Where statements one of two ways: var blackOldCats = cats.Where(cat => cat.Age > 7 && cat.Colour == "noir" ) Or var blackOldCats = cats.Where(cat => cat.Age > 7).Where(cat.Colour == "noir" ) Are there any benefits of one over the other? Don't worry too much about the datatypes in this example, but if there are issues with datatypes, then that would be good to know too.

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• How to return a dynamic value from a Mocha mock in Ruby

  - by Vivek

  The gist of my problem is as follows:- I'm writing a Mocha mock in Ruby for the method represented as "post_to_embassy" below. It is not really our concern, for the purpose of describing the problem, what the actual method does. But I need the mock to return a dynamic value. The proc '&prc' below is executing rightly in place of the actual method. But the "with" method in Mocha only allows for boolean values to be returned. So the code below outputs nil. I need it to output the value being passed through orderInfoXml. Does anyone know of an alternate method I can use? require 'rubygems' require 'mocha' include Mocha::API class EmbassyInterface def post_to_embassy(xml) puts "This is from the original class:-" puts xml return xml end end orderInfoXml = "I am THE XML" mock = EmbassyInterface.new prc = Proc.new do |orderXml| puts "This is from the mocked proc:-" puts orderXml orderXml end mock.stubs(:post_to_embassy).with(&prc) mock_result = mock.post_to_embassy(orderInfoXml) p mock_result #p prc.call("asd") output:- This is from the mocked proc:- I am THE XML nil

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• Microsoft T-SQL to Oracle PL/SQL translation

  - by Michael Prewecki

  I've worked with T-SQL for years but i've just moved to an organisation that is going to require writing some Oracle stuff, probably just simple CRUD operations at least until I find my feet. I'm not going to be migrating databases from one to the other simply interacting with existing Oracle databases from an Application Development perspective. Is there are tool or utility available to easily translate T-SQL into PL/SQL, a keyword mapper is the sort of thing I'm looking for. P.S. I'm too lazy to RTFM, besides it's not going to be a big part of my role so I just want something to get me up to speed a little faster.

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• ruby 1.9: invalid byte sequence in UTF-8

  - by Marc Seeger

  I'm writing a crawler in ruby (1.9) that consumes lots of HTML from a lot of random sites. When trying to extract links, I decided to just use .scan(/href="(.*?)"/i) instead of nokogiri/hpricot (major speedup). The problem is that I now receive a lot of "invalid byte sequence in UTF-8" errors. From what I understood, the net/http library doesn't have any encoding specific options and the stuff that comes in is basically not properly tagged. What would be the best way to actually work with that incoming data? I tried .encode with the replace and invalid options set, but no success so far...

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• Enabling PostgreSQL support in PHP on Mac OS X

  - by Jordan Scales

  I'm having a terribly difficult time getting the command "pg_connect()" to work properly on my Mac. I'm currently writing a PHP script (to be executed from console) to read a PostgreSQL database and email a report. I've gone into my php.ini file and added extension=pgsql.so But, I'm met with the following error. PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so, 9): image not found in Unknown on line 0 PHP Fatal error: Call to undefined function pg_connect() in... (blah file here) When running phpinfo(), I see nothing about PostgreSQL, so what is my issue here?

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• Asp.net MVC Label For

  - by Jaimal Chohan

  I have the following <label for="Forename">Forename</label> <%= Html.TextBoxFor(m => m.Customer.Name.Forename) %> the problem with this is that this is rendered as <label for="AddressLine1">Address Line 1</label> <input type="text" value="" name="Customer.Address.Thoroughfare" id="Customer_Address_Thoroughfare"> not what I want ofc. I would like an extension to render the label correctly (i.e. with the for="" attribute having the value of the input id), is there anything in MVC 2 that does this nativly before I go writing my own extension?

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• Ruby on Rails - differentiating plural vs singular resource in a REST API

  - by randombits

  I'm working on building the URLs for my REST API before I begin writing any code. Rails REST magic is fantastic, but I'm slightly bothered the formatting of a URL such as: http://myproject/projects/5 where Project is my resource and 5 is the project_id. I think if a user is looking to retrieve all of their projects, then a respective HTTP GET http://myproject/projects makes sense. However if they're looking to retrieve information on a singular resource, such as a project, then it makes sense to have http://myproject/project/5 vs http://myproject/projects/5. Is it best to avoid this headache, or do some of you share a similar concern and even better - have a working solution?

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