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• Is AlarmManager.setRepeating idempotent?

  - by tardate

  In my android app, I'm setting an alarm that I want to occur repeatedly, hence using AlarmManager.setRepeating(). I don't want to keep track of whether the alarm is set myself (sounds like a bad idea that's prone to fail at some point), and there seems to be no API support for checking whether a particular alarm is already set for a given Intent. Hence, I am pessimistically resetting the alarm each time my app activates: alarmManager.cancel(pendingIntent); ... alarmManager.setRepeating(..., pendingIntent); Question: is calling setRepeating() idempotent i.e. do I need to explicitly cancel() any prior alarm or can I safely just call setRepeating() and be done with it?

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• Prolog : Simple question

  - by abduls85

  I want to add any strings user entered into a list run :- write('How many students you have: '),read(x),nl. enterNameOfStudents(x). enterNameOfStudents(x) :- for(A, 1, x, 1),write('Please enter the names of students'),read(A),??????,nl,fail. What do i put in the ?????? portion to ensure that whatever the user enter will go into a user-defined list which will be used for further processing later ? Please help. I have tried numerous stuff like append and other but it does not work :(

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• Redirecting stdin through a FIFO

  - by kaoD

  I'm running a server app (written in Java) under GNU/Linux which takes input (from stdin, I guess) and interprets it to run some commands. I dont want to run the app inside a terminal window (I'd like to run a daemon), but I'd still like to be able to input commands whenever I want to. I thought I might be able to do that using fifos, so I created it using mknod. The problem is cat fifofile java... and cat fifofile | java ... fail with a "file not found" error for some reason. Using only cat to read and write and the fifo works flawlessly. Is there any way to fix this, or any other way to achieve the same goal?

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• ExtJS: Login with 'Remember me' functionality

  - by Chau

  I'm trying to create a simple login window with the very common 'Remember me' functionality. The login validation is done AJAX style, thus the browser won't remember my input. My approach is to use the built-in state functionality, but how to use it confuses me. Ext.state.Manager.setProvider(new Ext.state.CookieProvider({ expires: new Date(new Date().getTime()+(1000*60*60*24*7)), //7 days from now })); ... { xtype: 'textfield', fieldLabel: 'User name', id: 'txt-username', stateful: true, stateId: 'username' }, { xtype: 'textfield', fieldLabel: 'Password', id: 'txt-password', inputType: 'password', stateful: true, stateId: 'password' }, { xtype: 'button', text: 'Validate', stateEvents: 'click' } I know I have to implement the getState method, but on what component (my guess is on the two textfields)? Another thing I fail to realize is, how is my click event on the button connected to the state properties of my textfields?

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• Export JPG out of Dicom File With mDCM

  - by Ross Peoples

  Hello, I'm using mDCM with C# to view dicom tags, but I'm trying to convert the pixel data to a Bitmap and eventually out to a JPG file. I have read all of the posts on the mDCM Google Group on the subject and all of the code examples either don't work or are missing important lines of code. The image I am working with is a 16 bit monochrome1. I have tried using LockBits, SetPixel, and unsafe code in order to convert the pixel data to a Bitmap but all attempts fail. Does anyone have any code that could make this work. Thanks in advance P.S. Before anyone suggests trying something else like ClearCanvas, know that mDCM is the only library that suits my needs and ClearCanvas is WAY too bloated for what I need to do.

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• Embedding ASPX in ASP page

  - by KB22

  Hi all, I have an ASPX based component which I'd need to inlude into a plain ASP based script. Scenario is, that I'm working within an LMS system (Angel to be exact) and I wan't to create a new nugget within that framework. An Angel nugget is pretty much what a portlet is in the Java world. Now, the nugget spec. states that my starting point has to be a file called default.asp. What I'd like to do is: read relevant data from ASP session pass data to ASPX component have ASPX do it's job and display the results My problem is that I fail to run / display my ASPX component without using an iframe, which I want to avoid since that crushes the layout / design of my nugget. Is there a way to get this done properly or do I have to rewrite my component in ASP to get this going? Note: the component performs web service queries and such and I'd like to avoid rewriting that. thanks for your thoughts! K

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• How do boost operators work?

  - by FredOverflow

  boost::operators automatically defines operators like + based on manual implementations like += which is very useful. To generate those operators for T, one inherits from boost::operators<T> as shown by the boost example: class MyInt : boost::operators<MyInt> I am familiar with the CRTP pattern, but I fail to see how it works here. Specifically, I am not really inheriting any facilities since the operators aren't members. boost::operators seems to be completely empty, but I'm not very good at reading boost source code. Could anyone explain how this works in detail? Is this mechanism well-known and widely used?

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• Unable to sync custom authentication with RIA services in SL3 + RIA implementation

  - by Nair

  I am developing SL3 + RIA services with custom authentication. I followed the example in http://code.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=2661 to implement custom authentication. Based on the implementation, you first do login request from client to service. This request is async process. Noe the client GUI will start to bind data to SL controls using RIA services, which requires the authentication to be successful (by adding [RequireAuthentication] attribute). The trouble is, since you requested login from the main process, while it is doing authentication, the page control takes over and starts to bind data using RIA services. But the problem is authentication is not completed yet thus which ever the first service method data binding hits will fail with 'Access denied'. Bottom line is GUI is will not wait for authentication to be completed to start the data binding. My question is how do you handle this situation? Thanks,

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• known memory leaks in 3ds max?

  - by Denise

  I've set up a script in 3ds max to render a bunch of animations into frames. To do this, I open up a file with all of the materials, load an animation (as a bip) onto the figure, then render. We were seeing a problem where eventually the script would fail because it was unable to open the next file-- max had consumed all of the system memory. Closing max, of course, freed the memory, and we were able to continue with the script. I checked out the heapfree variable, hoping to see a memory leak within my script, hoping to see a memory leak within my own (maxscript) code-- but the amount of free space was the same after every animation. Then, it must be 3ds max which is consuming all of that memory. Nothing in max need be saved from animation to animation-- is there some way to get max to free that memory? (I've tried resetMaxFile() and manually deleting all of the objects in the scene). Is there any known sets of operations that cause max to grow out of control?

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• How to prevent Excel from wanting to start in Safe Mode?

  - by paulland

  We have a background process that calls Excel for generation of report spreadsheets. Occasionally, a crash or inadvertent server reboot will occur while Excel is running. The first launch of Excel after the restart brings up the dialog box (paraphrasing here) "Would you like to start Excel in safe mode?" (Yes/No) The issue is that our background app can't handle this dialog box, and acts as if Excel will not start properly, and the background jobs fail as a result. I can find CL switches for starting Excel in safe mode, but I can't find anything that will instruct Excel to always start in normal mode without that prompt dialog. (I don't have access to the other program's code, so I can't make it pass through a "Yes" value if it runs into that box.) Is there a registry hack or some other way I can force Excel into normal mode every time it's called?

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• Regarding to get refrence of IDot11AdHocManager Interface of COM WiFi AdHoc manager Interface

  - by sathaliyawala

  I am Trying to create AdHoc connection and for this i am using AdHoc wifi Interface provided by Microsoft. I have written code :- IDot11AdHocManager *pIAdHocMng = NULL ; HRESULT hr = CoInitialize(NULL); hr = CoCreateInstance(CLSID_Dot11AdHocManager,NULL,CLSCTX_INPROC_HANDLER ,IID_IDot11AdHocManager ,(void**)pIAdHocMng); if(hr == S_OK) printf("CreateNetwork Method success due to following reason :\n %ld",hr) ; else printf("CreateNetwork Method fail due to following reason : %ld \n ",hr) ; getch(); CoUninitialize(); But it will not return reference of Dot11AdHocManager it will return error and NULL value please help me to get the reference of Dot11AdHocManager Interface so i can use it method which help me to create the AdHoc Network

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• FitNesse doesn't call setters in my fixture

  - by Maurits Rijk

  I have copied a trivial example from the FitNesse Two-Minute example: package com.mrijk; import fit.ColumnFixture; public class Foobar extends ColumnFixture { private double numerator; private double denominator; public void setNumerator(double numerator) {this.numerator = numerator;} public void setDenominator(double denominator) {this.denominator = denominator;} public double quotient() {return numerator/denominator;} } However all test fail with: "Could not find field: denominator.", so obviously the setDenominator is not found/used. When I make the the variables numerator and denominator public instead of private, the tests run successfully. I must be overlooking something, but can't see it yet. Anyone?

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• BSD Sockets don't behave in a iPhone 3G environment

  - by Kyle

  I noticed that many times while developing for an iPhone 3G, BSD socket functions will simply fail. I also noticed at the time, the 3G antenna wasn't even ON, nor was there WIFI Access to back up the network call (So it seems ridiculous that it doesn't turn on to support the network request).. This information was verified with an app from Apple in the SDK called Connectivity Test, or something of the sort. Basically if you load Safari or something, then quickly load up the App it would be fine.. Of course that's not ideal. Apparently, to apple, gethostbyname() or something of the sort is by no means a reason to turn on the Antenna. I contacted Apple about this, and they said that the BSD functions do not switch the Antenna on, but calling all of the Objective-C CFNetwork functions do. I want portable code, so is there a way to keep my existing BSD setup? I really dislike coding in Objective-C, so if anyone knows a work around, that would be awesome.

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• How to handle an AsyncTask during Screen Rotation?

  - by Janusz

  I read a lot on how to save my instance state or how to deal with my activity getting destroyed during screen rotation. There seem to be a lot of possibilities but I haven't figured out which one works best for retrieving results of an AsyncTask. I have some AsyncTasks that are simply started again and call the isFinishing() method of the activity and if the activity is finishing they wont update anything. The problem is that I have one Task that does a request to a web service that can fail or succeed and restarting the task would result in a financial loss for the user. How would you solve this? What are the advantages or disadvantages of the possible solutions?

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• Mono mkbundle issue

  - by Sean

  Hello, I am trying to bundle mono runtime with a C# a simple (console) program that does nothing, but 'hello world'. Got Cygwin, configured it all, though it fails: $ mkbundle -o x2 x.exe --deps -z OS is: Windows Sources: 1 Auto-dependencies: True embedding: C:\cygwin\home\Sean\x.exe compression ratio: 31.71% embedding: C:\PROGRA~2\MONO-2~1.1\lib\mono\4.0\mscorlib.dll compression ratio: 34.68% Compiling: as -o temp.o temp.s gcc -mno-cygwin -g -o x2 -Wall temp.c `pkg-config --cflags --libs mono-2|dos2unix` -lz temp.o temp.c: In function `main': temp.c:173: warning: implicit declaration of function `g_utf16_to_utf8' temp.c:173: warning: assignment makes pointer from integer without a cast temp.c:188: warning: assignment makes pointer from integer without a cast /tmp/ccu8fTcQ.o: In function `main': /home/Sean/temp.c:173: undefined reference to `_g_utf16_to_utf8' /home/Sean/temp.c:188: undefined reference to `_g_utf16_to_utf8' collect2: ld returned 1 exit status [Fail] Tried post with similar problem to mine here, but it didn't work either. My configuration: Windows 7 64bit Mono 2.8.1 Latest Cygwin Not sure what's the story here. Help appreciated.

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• CacheManager.getCacheFileBaseDir() always returns null

  - by Leon

  Hi, I've been trying to use the CacheManager for caching some http requests but it failed every time with a nullpointer exception. After some digging I believe I found out why: CacheManager.getCacheFileBaseDir() always returns null so when I try to use CacheManager.getCacheFile() or CacheManager.saveCacheFile() they fail. CacheManager.cacheDisabled() returns false :S I hadn 't created a cache partition via the AVD manager so I thought the problem lie there. But after creating a cache partition getCacheFile() still return null: 03-16 00:25:16.321: ERROR/AndroidRuntime(296): Caused by: java.lang.NullPointerException 03-16 00:25:16.321: ERROR/AndroidRuntime(296): at android.webkit.CacheManager.getCacheFile(CacheManager.java:296) What could be the problem? I've got the code posted here: http://pastebin.com/eaJwfXEK But it's a bit messy because I've been trying tons of stuff. Why does CacheManager.getCacheFileBaseDir() return null and not a File object? Thanks in advance! Leon

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• Cross-domain policy issues after redirect in Flash

  - by ggambett

  I'm having trouble with a cross-domain policy. I'm using the AS3 Loader to fetch an image; I'm making it load the policy file, like this : var pLoader : Loader = new Loader(); var pContext : LoaderContext = new LoaderContext(); pContext.checkPolicyFile = true; pLoader.load(new URLRequest(sURL), pContext); This works fine as long as the image is directly accessible; however, when the server sends a redirect, the loader follows it but loses the checkPolicyFile flag, resulting in a SecurityException - that is, it doesn't check the cross-domain policy of the redirected URL. I've found a solution here ( http://www.stevensacks.net/2008/12/23/solution-as3-security-error-2122-with-300-redirects ) but looks fragile (that is, looks like it will fail if there's more than one redirect). What would be the correct way of doing this?

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• UIView drawRect; class variables out of scope

  - by Toby Wilson

  Short & sweet version of my last question in light of new information. I have a UIVIew with an init and a drawrect method (and another thread and a bunch of other stuff, but I'll keep it short & sweet). All of the class variables that I alloc and init in the -(id)init method are out of scope/nil/0x0 in the drawRect method, and I am unable to access them. For example; In the interface: NSObject* fred; In the implementation: -(id)init { if(self == [super init]) { fred = [[NSObject alloc] init]; } return self; } -(void)drawRect:(CGRect)rect { NSLog(@"Fred is retained %i times",[fred retainCount]); //FAIL NSLog(@"But his variable is actually just pointing at uninitialised 0x0, so you're not reading this in the debugger because the application has crashed before it got here." } Should add that init IS being called before drawRect also. Anyone have any ideas?

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• App.config for SpecFlow not recognized

  - by INTPnerd

  How do I get my App.config file to be recognized/used? I have tried placing it in the top folder of my project and in the same folder as my feature files. Here are the contents of my App.config file: <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="specFlow" type="TechTalk.SpecFlow.Configuration.ConfigurationSectionHandler, TechTalk.SpecFlow"/> </configSections> <specFlow> <runtime detectAmbiguousMatches="true" stopAtFirstError="false" missingOrPendingStepsOutcome="Error" /> </specFlow> </configuration> Specifically I am trying to tell NUnit to have a fail result when there is a missing or pending step which is why I am specifying "Error" for this.

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• Ending a Rails 2 URL with an IP address causes routing error?

  - by Dave Williams

  I'm trying to construct URLs in the format http://servername/find/by/CRITERION/VALUE CRITERION is a finite set of strings, as is VALUE. Trouble is, VALUE needs to be an IP address in some situations, and it's causing me a routing error. Here's my route: map.find 'find/by/:criterion/:query', :controller => "find", :action => "by" And the error, from the Mongrel logs: Processing ApplicationController#index (for 127.0.0.1 at 2010-05-07 10:20:32) [GET] ActionController::RoutingError (No route matches "/find/by/ip/1.2.3.4" with {:method=>:get}): Rendering rescues/layout (not_found) If I visit /find/by/foo/bar or /find/by/foo/1234 I don't have problems. I suspect the problem might be Rails' inference of MIME types based on periods in the URL, but I don't really know how I can disable that. I've tried passing a :defaults = {:format = :html} to the route but that causes Mongrel to fail to start entirely. Any help appreciated!

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• Using URL Routing for Web Forms with .ashx files

  - by RandomBen

  I am developing a .NET 3.5 Web Forms based website that uses URL Routing. So far I have created a few routes and I have had no issue. I now have a .ashx file that is going to handle sending .pdf files from a table in SQL Server to the website when someone clicks on a link. Normally when I create a Handler it would look like this: return BuildManager.CreateInstanceFromVirtualPath("~/ViewItem.aspx", typeof(Page)) as Page; For my .ashx file I tried: return BuildManager.CreateInstanceFromVirtualPath("~/FileServer.ashx", typeof(Page)) as Page; This doesn't work though because fileserver.ashx is not a page so casting it as typeof(Page)) as Page is going to fail. What do I cast the VirtualPath as instead of Page or is there some other way I should be doing this.

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• Incompatibilities between Indy 9 and Windows Server 2003?

  - by mcmar

  I'm having a problem with a Delphi application on some Windows 2003 servers. It uses a webservice call to connect with another server and transmit data back and forth. As soon as the app gets to the Authenticate method, the app dies. The app has worked for years on previous boxes with Win Server 2003, but it doesn't on freshly built machines. The machines are set up the same way for the most part, but there is clearly some config setting that differs that I'm not able to track down. Also, while the error becomes apparent in the call to Authenticate, packet sniffing proves that nothing ever happens between the app and the server it's trying to contact, which strengthens my thoughts that something is dieing early on in setting up the connection. I can't duplicate the error locally, so I can't step through the app in a debugger either. Any thoughts on why an Indy 9 Delphi web connection might silently fail?

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• Behaviour of insertion trigger when defining autoincrement in Oracle

  - by Genba

  I have been looking for a way to define an autoincrement data type in Oracle and have found these questions on Stack Overflow: Autoincrement in Oracle Autoincrement Primary key in Oracle database The way to use autoincrement types consists in defining a sequence and a trigger to make insertion transparent, where the insertion trigger looks so: create trigger mytable_trg before insert on mytable for each row when (new.id is null) begin select myseq.nextval into :new.id from dual; end; I have some doubts about the behaviour of this trigger: What does this trigger do when the supplied value of "id" is different from NULL? What does the colon before "new" mean? I want the trigger to insert the new row with the next value of the sequence as ID whatever the supplied value of "new.id" is. I imagine that the WHEN statement makes the trigger to only insert the new row if the supplied ID is NULL (and it will not insert, or will fail, otherwise). Could I just remove the WHEN statement in order for the trigger to always insert using the next value of the sequence?

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• Why do I need an IoC container as opposed to straightforward DI code?

  - by Vadim

  I've been using Dependency Injection (DI) for awhile, injecting either in a constructor, property, or method. I've never felt a need to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container. I played with .NET containers like StructureMap, NInject, Unity, and Funq. I still fail to see how an IoC container is going to benefit / improve my code. I'm also afraid to start using a container at work because many of my co-workers will see code which they don't understand. Many of them may be reluctant to learn new technology. Please, convince me that I need to use an IoC container. I'm going to use these arguments when I talk to my fellow developers at work.

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• sql group by with left join

  - by cometta

  fail statement:Error: ORA-00979: not a GROUP BY expression select org_division.name , org_department.name , org_surveylog.division_code as divisionCode,org_surveylog.department_code as departmentCode , max(org_surveylog.actiondate) from org_surveylog left join org_division on (org_surveylog.division_code= org_division.division_code and org_surveylog.SURVEY_NUM= org_division.survey_num) left join org_department on (org_surveylog.department_code = org_department.department_code and org_surveylog.SURVEY_NUM = org_department.survey_num) group by org_surveylog.division_code,org_surveylog.department_code but below is ok select org_surveylog.division_code as divisionCode,org_surveylog.department_code as departmentCode , max(org_surveylog.actiondate) from org_surveylog left join org_division on (org_surveylog.division_code= org_division.division_code and org_surveylog.SURVEY_NUM= org_division.survey_num) left join org_department on (org_surveylog.department_code = org_department.department_code and org_surveylog.SURVEY_NUM = org_department.survey_num) group by org_surveylog.division_code,org_surveylog.department_code how to use group by with left join when i need to show value of org_division.name , org_department.name ?

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