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  • Trouble with C# array

    - by Biosci3c
    Hi, I am writing a card playing program as a way of learning C#. I ran into an issue with an array going out of bounds. Here is my code: namespace Pcardconsole { class Deck { public Deck() { // Assign standard deck to new deck object int j; for (int i = 0; i != CurrentDeck.Length; i++) { CurrentDeck[i] = originalCards[i]; } // Fisher-Yates Shuffling Algorithim Random rnd = new Random(); for (int k = CurrentDeck.Length - 1; k >= 0; k++) { int r = rnd.Next(0, k + 1); int tmp = CurrentDeck[k]; CurrentDeck[k] = CurrentDeck[r]; CurrentDeck[r] = tmp; // Console.WriteLine(i); } } public void Shuffle() { // TODO } // public int[] ReturnCards() // { // TODO // } public int[] originalCards = new int[54] { 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x50, 0x51 }; public int[] CurrentDeck = new int[54]; } class Program { static void Main(string[] args) { // Create a Deck object Deck mainDeck = new Deck(); Console.WriteLine("Here is the card array:"); for (int index = 0; index != mainDeck.CurrentDeck.Length; index++) { string card = mainDeck.CurrentDeck[index].ToString("x"); Console.WriteLine("0x" + card); } } } The hexidecimal numbers stand for different cards. When I compile it I get an array index out of bounds error, and a crash. I don't understand what is wrong. Any help would be much appreciated.

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  • SQLAlchemy DetachedInstanceError with regular attribute (not a relation)

    - by haridsv
    I just started using SQLAlchemy and get a DetachedInstanceError and can't find much information on this anywhere. I am using the instance outside a session, so it is natural that SQLAlchemy is unable to load any relations if they are not already loaded, however, the attribute I am accessing is not a relation, in fact this object has no relations at all. I found solutions such as eager loading, but I can't apply to this because this is not a relation. I even tried "touching" this attribute before closing the session, but it still doesn't prevent the exception. What could be causing this exception for a non-relational property even after it has been successfully accessed once before? Any help in debugging this issue is appreciated. I will meanwhile try to get a reproducible stand-alone scenario and update here. Update: This is the actual exception message with a few stacks: File "/home/hari/bin/lib/python2.6/site-packages/SQLAlchemy-0.6.1-py2.6.egg/sqlalchemy/orm/attributes.py", line 159, in __get__ return self.impl.get(instance_state(instance), instance_dict(instance)) File "/home/hari/bin/lib/python2.6/site-packages/SQLAlchemy-0.6.1-py2.6.egg/sqlalchemy/orm/attributes.py", line 377, in get value = callable_(passive=passive) File "/home/hari/bin/lib/python2.6/site-packages/SQLAlchemy-0.6.1-py2.6.egg/sqlalchemy/orm/state.py", line 280, in __call__ self.manager.deferred_scalar_loader(self, toload) File "/home/hari/bin/lib/python2.6/site-packages/SQLAlchemy-0.6.1-py2.6.egg/sqlalchemy/orm/mapper.py", line 2323, in _load_scalar_attributes (state_str(state))) DetachedInstanceError: Instance <ReportingJob at 0xa41cd8c> is not bound to a Session; attribute refresh operation cannot proceed The partial model looks like this: metadata = MetaData() ModelBase = declarative_base(metadata=metadata) class ReportingJob(ModelBase): __tablename__ = 'reporting_job' job_id = Column(BigInteger, Sequence('job_id_sequence'), primary_key=True) client_id = Column(BigInteger, nullable=True) And the field client_id is what is causing this exception with a usage like the below: Query: jobs = session \ .query(ReportingJob) \ .filter(ReportingJob.job_id == job_id) \ .all() if jobs: # FIXME(Hari): Workaround for the attribute getting lazy-loaded. jobs[0].client_id return jobs[0] This is what triggers the exception later out of the session scope: msg = msg + ", client_id: %s" % job.client_id

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  • Is there a Standard or Best Practice for Perl Progams, as opposed to Perl Modules?

    - by swestrup
    I've written any number of perl modules in the past, and more than a few stand-alone perl programs, but I've never released a multi-file perl program into the wild before. I have a perl program that is almost at the beta stage and is going to be released open source. It requires a number of data files, as well as some external perl modules -- some I've written myself, and some from CPAN -- that I'll have to bundle with it so as to ensure that someone can just download my program and install it without worrying about hunting for obscure modules. So, it sounds to me like I need to write an installer to copy all the files to standard locations so that a user can easily install everything. The trouble is, I have no idea what the standard practice would be for this. I have found lots of tutorials on perl module standards, but none on perl program standards. Does anyone have any pointers to standard paths, installation proceedures, etc, for perl programs? This is going to be complicated by the fact that the program is multi-platform. I've been testing it in Linux, but its designed to work equally well in Windows.

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  • Having C# application communicate with Nagios

    - by user200295
    We are using Nagios to monitor our network with great results. There is now a new requirement we are struggling with: We want to notify Nagios of an non fatal but critical application errors. The application does not stop running but there is some sort of issue that needs looking into. Once the issue has been looked into, we need some way to "unflag" the issue in Nagios. We tried using the syslog, but the biggest problem was once an error was logged, the service was put into an error state with no way to recover. Also, while applications would report a critical error to the syslog, most of the time they don't report an "All clear" error.

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  • svn import, dont modify revision OR modify the list of files in a transaction

    - by Vaughan Durno
    Hi Ive gained so much knowledge/insight from this site in the past few years, now im actually hoping to get some enlightenment. The scenario is as follows: You have the general structure of the repo (trunk,branches,tags) but added to the layout you have another directory called 'db_revs'. Now in the pre-commit, you take a dump of a specific database (the specifics are irrelevant) into a temporary file, say /tmp/REV.sql (REV being the HEAD revision number of the repo, or the transaction). K all is well and you can just import that temp file into the repo at /db_revs/REV.sql Now obviously that import, even tho its happening during a commit, increments the revision of the repo. So when u do a commit at some point to say 'test.php' in the trunk and it completes at say revision 159, then the pre-commit runs as it should and the DB dump gets imported but then u r sitting with a tree in the repo-browser where 'trunk' is at revision 159, and 'db_revs', which has the imported dump, is at 158 (Ive made it so that the filename matches the revision ie: 159.sql but that file is then at revision 158). NB If you're doing an import in a pre-commit, you need to add some logic to not perform the import, say by checking first for the existence of the temp file, otherwise it will cause, um, a stack overflow and your PC will quickly crawl to a stand still So I wanted to know if it was possible to make an import to not commit its changes. I realise I might be barking up the wrong tree to begin with so I have another idea of doing this so that brings me to the 2nd part of my question, would it be possible to modify the list of files that the transaction is about to commit to the repo. I know this can be done to a WC but that wont help as a WC is a checked out copy of say the trunk so im not sure how u would add a file to the 'db_revs' folder which is above trunk? Any help is greatly appreciated Cheers Vaughan

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  • Simple hardware RNG

    - by roygbiv
    I made a tongue-in-cheek comment to this question about making a hardware RNG. Does anyone know of any simple plans or can anyone descibe a simple hardware based RNG and the software to drive it? Go to Radio Shack. Buy a diode, an NTR resistor, a capacitor and serial cable. Cut off the end of the serial cable that does not fit on your computer. Solder the diode and resistor in series between pins DTR and DSR of the cable. Solder the capacitor between DSR and TXD pins. Write a small C program to do the following: Set DTR to 1. Start Timer. Monitor DSR until it goes to 1. Stop Timer. Calculate resistance from elapsed time. Retreive serveral bits from that value to use as part of random number. Repeat until enough bits have accumulated.

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  • How to hide Thinking at Work so that the Non-Programmers don't suspect Slacking?

    - by stesch
    Better programmers than me can write in essays about walking around with a coffee mug and call it programming. And it's perfectly accepted at a place that knows the business. Or see what Gregory House (TV show "House M.D.") does when he is thinking. But what about the other places where you are the only programmer? If you don't stare at boring stuff on the monitor for 8 hours straight, co-workers suspect you being a slacker. Yes, not the managers who see the output. Only the co-workers who see the process and can't relate to this kind of work. Yesterday I had to explain to a trainee of some other profession that software development is like flying. The explanation from the Hitchhiker's Guide to the Galaxy. I don't think she bought it.

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  • Microsoft CRM could not log you on to the system. Make sure your user record...

    - by Willy
    "Microsoft CRM could not log you on to the system. Make sure your user record is enabled and that you have been assigned at least one security role. For more information, contact your system administrator." When I RDP into the server and try Microsoft CRM Workflow Manager/Monitor with http or https connectivity, it doesn't work. "The specified Microsoft CRM server is not responding. This might happen if it is currently unavaliable, it is not a Microsoft CRM server, or you are not a valid user. Contact your sys-admin." This is a Microsoft CRM v3.0 / Microsoft SQL server 2005 box, Active directory is on a seperate box.. When I right click Microsoft CRM Worlkflow Service, properties, log on: it shows "crmtestuser" and a password. I did not RDP or try logging in as that crmtestuser, but I am Admin... Could this be a clue? What can I try?

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  • MapKit custom annotations being added to map, but are not visible on the map

    - by culov
    I learned a lot from the screencast at http://icodeblog.com/2009/12/21/introduction-to-mapkit-in-iphone-os-3-0/ , and ive been trying to incorporate the way he creates a custom annotation into my iphone app. He is hardcoding annotations and adding them individually to the map, whereas i want to add them from my data source. So i have an array of objects with a lat and a lng (ive checked that the values are within range and ought to be appearing on the map) that i iterate through and do [mapView addAnnotation:truck] once this process is completed, i check the number of annotations on the map with [[mapView annotations] count] and its equal to the number it ought to be, so all the annotations are getting added onto the mapView, but for some reason I cant see any annotations in the simulator. I've compared my code with his in all the pertinent places many times, but nothing seems to stand out as being incorrect. Ive also reviewed my code for the last several hours trying to find a point where I do something wrong, but nothing is coming to mind. The images are named just as they are assigned in the custom AnnotationView, the loadAnnotation function is done properly, etc... i dont know what it could be. so i suppose if i could have the answer to one question it would be, what are possible causes for a mapView to contain several annotations, but to not show any on the map? Thanks

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  • How often do you find javascript disabled on browsers?

    - by Mark Redman
    I have started using ajax/jQuery in our websites / application. There are many plugins that support degrading the javascript to browsers that dont have javascript enabled and techniques to support this. What are peoples thoughts on javascript support, we build applications rather than just websites and are looking to just support javascript enabled browsers as a pre-requisite assuming that most people or companies have javascript enabled. Do you find most people have javascript? do you monitor the percentage of javascript/non-javascript browsers (I guess this can be done with website stats) and what are the numbers regarding this?

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  • xml appending issue

    - by 3gwebtrain
    Any one help me? i have the xml with 2 steps. example : Type of Company: Architects may be self-employed. Workspace – Indoors/outdoors: Architects work both. Environment Travel: Architects often visit construction sites to review the progress of projects. People: They work a lot with other professionals involved in the construction project including engineers, contractors, surveyors and landscape architects. Casual: They usually work in a casual and comfortable environment. Hours: The hours are varied based on the project they are working on. Physically demanding: They stand on their feet. Tools: Computers - Architects Assist clients in obtaining construction bids Observe, inspect and monitor building work in my funcation i am using "list.each" to append to ul+index. it works fine. And my problem is while i append the "list.each", the "sublistgroup" should not append to "list.each", insted the "sublistgroup" need to make "ul" and in the ul i need the "sublist" became childrens.. my code is here... i konw that, i am doing some wrong way.. pls any one correct it and let me know.. $(function(){ $.get('career-utility.xml',function(myData){ $(myData).find('listgroup').each(function(index){ var count = index; var listGroup = $(this); var listGroupTitle = $(this).attr('title'); var shortNote = $(this).attr('shortnote'); var subLink = $(this).find('sublist'); var firstList = $(this).find('list'); $('.grouplist').append('<div class="list-group"><h3>'+listGroupTitle+'</h3><ul class="level-one level' + count + '"></ul></div>'); firstList.each(function(listnum){ var subList = $(this).text(); var subListLeveltwo = $(this).find('sublist').text(); if(subListLeveltwo==''){ $('<li>'+subList+'</li>').appendTo('ul.level'+count+''); } else{ $('<li class="new">'+subList+'</li>').appendTo('ul.level'+count+''); } }) }) }) })

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  • ASP.NET MVC intermittent slow response

    - by arehman
    Problem In our production environment, system occasionally delays the page response of an ASP.NET MVC application up to 30 seconds or so, even though same page renders in 2-3 seconds most of the times. This happens randomly with any arbitrary page, and GET or POST type requests. For example, log files indicates, system took 15 seconds to complete a request for jquery script file or for other small css file it took 10 secs. Similar Problems: Random Slow Downs Production Environment: Windows Server 2008 - Standard (32-bit) - App Pool running in integrated mode. ASP.NET MVC 1.0 We have tried followings/observations: Moved the application to a stand alone web server, but, it didn't help. We didn't ever notice same issue on the server for any 'ASP.NET' application. App Pool settings are fine. No abrupt recycles/shutdowns. No cpu spikes or memory problems. No delays due to SQL queries or so. It seems as something causing delay along HTTP Pipeline or worker processor seeing the request late. Looking for other suggestions. -- Thanks

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  • Setting JMX attribute on VM as command line paramater

    - by 117440226733149663383
    I've done some searching, but can't seem to find a way to do this. We'd like to proactively monitor our permgen space via JMX. It seems the best way to do this is through the UsageThreshold attribute on the "PS Perm Gen" MemoryPool. By default, this is set to 0. Is there a way to specify this, or any JMX attribute, as a -D parameter to VM so this can be set automatically at startup? Or is there another mechanism to load JMX attributes automatically? Thanks.

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  • Multi:Threading - Is this the right approach?

    - by HonorGod
    Experts - I need some advice in the following scenario. I have a configuration file with a list of tasks. Each task can have zero, one or more dependencies. I wanted to execute these tasks in parallel [right now they are being executed sequentially] The idea is to have a main program to read the configuration file and load all the tasks. Read individual tasks and give it to an executor [callable] that will perform the task and return results in a Future. When the task is submitted to the executor (thread) it will monitor for its dependencies to finish first and perform its own task. Is this the right approach? Are there any other better approaches using java 1.5 features?

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  • How to determine Windows.Diagnostics.Process from ServiceController

    - by Alex
    This is my first post, so let me start by saying HELLO! I am writing a windows service to monitor the running state of a number of other windows services on the same server. I'd like to extend the application to also print some of the memory statistics of the services, but I'm having trouble working out how to map from a particular ServiceController object to its associated Diagnostics.Process object, which I think I need to determine the memory state. I found out how to map from a ServiceController to the original image name, but a number of the services I am monitoring are started from the same image, so this won't be enough to determine the Process. Does anyone know how to get a Process object from a given ServiceController? Perhaps by determining the PID of a service? Or else does anyone have another workaround for this problem? Many thanks, Alex

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  • Apache not loading Xdebug, but does when started from the Command Line

    - by JamesD
    I know that this sounds odd, but believe me, it's what is happening. Here are my system settings: Windows7 Apache 2.2 PHP 5.2.12 Xdebug 2.0.5 I have XDebug configured in my PHP.ini file. When I run php -m, I do in fact see that Xdebug is loaded. Now, if I start Apache AS A SERVICE (or by the Apache Monitor), and run phpinfo(), it is NOT showing Xdebug as being loaded. However, (now here's the crazy part), if I go to my Apache bin directory, and simply run httpd.exe, and then go and look at phpinfo(), Xdebug now shows as being loaded! Also, comparing some phpinfo() when started via service or by command line, it looks like the php.ini file is the same for either case. Everything looks the same except for the Xdebug being loaded part. Please, if you have any ideas it would be greatly appreciated.

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  • Control Windows VM from Linux Host

    - by vy32
    I am looking for a tool that will allow me to monitor and control programs running inside a Windows VM from the Linux host machine. I realize that this is similar to what a rootkit would do, and I am completely happy to use some hacker software if it provides the necessary functionality (and if I can get it in source-code form). If I can't find something, I'll have to write it using C. Probably an embedded HTTP server running on an odd port and doing some kind of XMLRPC thing. Here is the basic functionality I need: Get list of running processes Kill a process. Start a process Read/write/create/delete files I would like to: - Read contents of screen - Read all controls on screen. - Send arbitrary click to a Windows control. Does anything like this exist?

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  • WinForm Plugin system

    - by Patrick
    I have created a c# 2.0 WinForm application which loads dlls, searches for an interface, and then loads the interface as a plugin. I am loading the plugins in the same appdomain as the main application because they have a GUI which I am directly loading into the application as a tab item. I would like to load them in their own app domain, but do not think it is possible because of the GUI. I would also like to monitor them to tell if they are not responsive and unload them. Is this possible? If I upgrade to WPF are things any simpler.

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  • javascript div positioning

    - by sam
    hello folks., please suggest me a solution.. i am using this script to display an image as popup on mouseover.. the difficulty i am facing is that it is not positioning well in different monitor.. it must be something to do with pixcel.. function LargeImage(obj,e) { var imgbtn=document.getElementById('<%=imgbtn1.ClientID%'); imgbtn.src=obj; document.getElementById('imgbox').style.visibility="visible"; document.getElementById('imgbox').style.position="absolute"; document.getElementById('imgbox').style.left=e.clientX-150 + "px"; document.getElementById('imgbox').style.top=225 +"px"; //225 +"px"; } thank you

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  • What's correct way to remove a boost::shared_ptr from a list?

    - by Catskul
    I have a std::list of boost::shared_ptr<T> and I want to remove an item from it but I only have a pointer of type T* which matches one of the items in the list. However I cant use myList.remove( tPtr ) I'm guessing because shared_ptr does not implement == for its template argument type. My immediate thought was to try myList.remove( shared_ptr<T>(tPtr) ) which is syntactically correct but it will crash from a double delete since the temporary shared_ptr has a separate use_count. std::list< boost::shared_ptr<T> > myList; T* tThisPtr = new T(); // This is wrong; only done for example code. // stand-in for actual code in T using // T's actual "this" pointer from within T { boost::shared_ptr<T> toAdd( tThisPtr ); // typically would be new T() myList.push_back( toAdd ); } { //T has pointer to myList so that upon a certain action, // it will remove itself romt the list //myList.remove( tThisPtr); //doesn't compile myList.remove( boost::shared_ptr<T>(tThisPtr) ); // compiles, but causes // double delete } The only options I see remaining are to use std::find with a custom compare, or to loop through the list brute force and find it myself, but it seems there should be a better way. Am I missing something obvious, or is this just too non-standard a use to be doing a remove the clean/normal way?

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  • How to learn as a lone developer?

    - by fearofawhackplanet
    I've been lucky to work in a small team with a couple of experienced and knowledgeable developers for the first year of my career. I've learned a huge amount. But I'm now getting transferred within my company, and will be working on solo projects. I'll cope, but I know I'll make mistakes and won't always produce the best solutions without someone to guide me and review my output. I'm wondering if anyone has any tips in this situation. How can I keep learning? What's the best way to monitor and asses the quality of my work? How can I ensure that my career and skills don't stagnate?

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  • PyQt: How to Know Progress of a Process Running background

    - by krishnanunni
    Hello there. Im in real confusion with the ProgressBar mechanisms. However now i need help on this "Can we know the percentage completion or time remaining of completion of a Process, that has been initiated from a Qt interface like this ` self.process = QProcess() self.connect(self.process, SIGNAL("readyReadStdout()"), self.readOutput) self.connect(self.process, SIGNAL("readyReadStderr()"), self.readErrors) tarsourcepath="sudo tar xvpf "+ self.path1 self.process.setArguments(QStringList.split(" ",tarsourcepath)) self.textLabel3.setText(self.__tr("Extracting.....")) self.process.start()` slots readOUtput just implements the collection of data fron stdout and transferring it to a text browser. I need to know is there any way we could monitor the ongoing process, making to knowpercentage completion, so that i can manage a progressbar for this. Thanks Experts

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  • DNS Lookup in ASP / ASP.Net

    - by Dave Forgac
    I have a Windows server that is intermittently losing the ability to lookup DNS information. I'm trying to get to the root cause of the problem but in the mean time I'd like to be able to monitor whether the server can perform lookups. Basically, it should attempt to lookup some common hostnames and the display 'Success' if the lookups are successful. I see lots of examples of doing this with third party components in ASP but I would prefer to be able to do this with a single ASP / ASP.Net script that would be portable and not require anything additional be installed.

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  • Is there a service for monitoring secured WCF endpoints in the same way that HTTP monitoring service

    - by Ryan ONeill
    Hi all, A service I have in WCF occasionally goes down due a problem with a COM component. While I am troubleshooting I would like to setup another host to make regular calls to this service to monitor availability. It is slightly more complicated that a simple HTTP call though as the service is secured by SSL and WCF authentication (username / password). I'd also like to be able to parse successful calls to see if they return warning / fail states from my code. Would you recommend any monitoring providers for this or is it beyond the simple monitoring they normally provide? Regards Ryan

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  • Running a Windows Forms app. from a service.

    - by RemotecUk
    Hi, I have a strange application in that for development and testing I need a windows forms application so that I can monitor what it is doing. For production, the application will be started from a service and no visible UI is needed. I dont really want to re-write the app. once it is completed into a console app so I would like to leave it as it but start it from the service. My question is will this application work fine from a service? At the moment it has UI elements and I have been able to successfully start the application from a service using the Process class (System.Diagnostics). Could anything go wrong with this approach?

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