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  • Selectively suppress XML Code Comments in C#?

    - by Mike Post
    We deliver a number of assemblies to external customers, but not all of the public APIs are officially supported. For example, due to less than optimal design choices sometimes a type must be publicly exposed from an assembly for the rest of our code to work, but we don't want customers to use that type. One part of communicating the lack of support is not provide any intellisense in the form of XML comments. Is there a way to selectively suppress XML comments? I'm looking for something other than ignoring warning 1591 since it's a long term maintenance issue. Example: I have an assembly with public classes A and B. A is officially supported and should have XML documentation. B is not intended for external use and should not be documented. I could turn on XML documentation and then suppress warning 1591. But when I later add the officially supported class C, I want the compiler to tell me that I've screwed up and failed to add the XML documentation. This wouldn't occur if I had suppressed 1591 at the project level. I suppose I could #pragma across entire classes, but it seems like there should be a better way to do this.

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  • jQuery input mask length

    - by Tim
    Hey all, I have an input field and I want to limit it to alphanumerical (A-Z, a-z, 0-9) characters only, with a MINIMUM field length of 5, and a maximum length of up to 15 characters total. Does anyone know how I can do this using jQuery? I'm trying to use the jQuery input mask by digitalBush - http://digitalbush.com/projects/masked-input-plugin/ The problem is that UNLESS I enter 15 characters, the field goes blank. If I enter "012345678912345" (15 characters) in the input field then the value is stored and it's fine. But if I enter "12345" as a username, when that input box loses focus its value goes back to being blank. Is there something that I can change in the "definitions" or options somewhere that fixes this? Many thanks for your help :) Tim

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  • UIScrollView. Any thoughts on implementing "infinite" scroll/zoom?

    - by dugla
    So, UITableView supports essentially "infinite" scrolling. There' may be a limit but that sucker can scroll for a looonnnggg time. I would like to mimic this behavior with a UIScrollView but there are two fundamental impediments: 1) scrollView.contentSize is fixed at creation time. 2) zooming can blow any lazy-loading scheme all to hell since it can cause infinte data explosion. Have others out there pondered this idea? Yah, I know, we are essentially talking about re-creating Google Maps here. Any insights would be much appreciated. Cheers, Doug

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  • dinamically resizing row height in QTreeWidget/QTreeView during edinitg items

    - by serge
    Hi everyone, I have some problems with sizing row's height in QTreeWidget. I use QStyledItemDelegate with QPlainTextEdit. During editing text in QPlainTextEdit i check for changes with a help of: rect = self.blockBoundingRect(self.firstVisibleBlock()) and if text it's height changes i need row in QTreeWidget also resizing. But i don't know how to inform TreeWidget or a Delegate about changes, i even tried to initialize editor with index, that i could use in a future, but it suddenly changes: class MyEditor(QPlainTextEdit): def __init__(self, index = None, parent=None): super(MyEditor, self).__init__(parent) self.index = index self.connect(self, SIGNAL("textChanged()"), self.setHeight) def setHeight(self): if self.index: rect = self.blockBoundingRect(self.firstVisibleBlock()) self.resize(rect.width(), rect.height()) self.emit(SIGNAL("set_height"), QSize(rect.width(), rect.height()), self.index) How can i bound editor's size changes with TreeWidget? And one more thing, by default all items (cells) in TreeWidget have -1 or some big value as default width. I need whole text in cell to be visible, so how can i limit it only by visible range and expand it in height? Thank you in advance, Serge

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  • MySQL and GROUP_CONCAT() maximum length

    - by zewaren
    Hello everyone, I'm using GROUP_CONCAT() in a MySQL query to convert multiple rows into a single string. However, the maximum length of the result of this function is 1024 characters. I'm very well aware that I can change the param group_concat_max_len to increase this limit: SET SESSION group_concat_max_len = 1000000; However, on the server I'm using, I can't change any param. Not by using the preceding query and not by editing any configuration file. So my question is: Is there any other way to get the output of a multiple row query into a single string? Thank you for your answers.

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  • HttpRuntime.Cache scavenging default behavior?

    - by Rire1979
    When adding items using the default insert method Insert(key, value) and as such using the default behavior of HttpRuntime.Cache, when does the scavenging take place? The limit on the application pool that hosts my application is 0 (unlimited)... but I see no way to find out how big the cache can get before scavenging occurs? The problem is I am caching a potentially very large amount of data but I have limited memory on the server and I want to avoid recycling of the app pool. I am asking in the context of IIS6 and IIS7. Thank you.

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  • ASP.NET 4 - IIS 7 - Request timed out - Request timed out

    - by sharru
    My website is running on Asp.net v4 , IIS 7 , Windows server 2008. My cpu is running on 20-30% and the site is responding quickly. Every 2-5 mins i'm receiving the following error: Event code: 3001 Event message: The request has been aborted. Exception type: HttpException Exception message: Request timed out. , Request information: Request URL: http://www.xxxx.com/Services/AxRefresh.asmx/AxUpdate Request path: /Services/AxRefresh.asmx/AxUpdate User host address: 84.110.251.198 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE i read that the error is related to the maximum concurrent requests limit http://support.microsoft.com/kb/821268 but then i found out that on IIS 7 this limitation is changed and not relevant. http://msdn.microsoft.com/en-us/library/dd560842(VS.100).aspx Any other ideas what can be the problem or where to start looking ? Thx!

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  • Join with three tables

    - by John
    Hello, For the join query below, I would like to pull some data from a third MySQL table called "comment." Each s.title has a corresponding s.submissionid. The field "submissionid" is also the in the table "comment." For each "submissionid" in the table "comment," I would like to count a field called "commentid." How can I do this? Thanks in advance, John $sqlStr = "SELECT s.loginid, s.title, s.url, s.displayurl, l.username FROM submission AS s, login AS l WHERE s.loginid = l.loginid ORDER BY s.datesubmitted DESC LIMIT 10";

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  • WM_CONCAT use CASE

    - by Ruslan
    i have a select: select substr(acc,1,4),currency, amount, module, count(*), wm_concat(trn_ref_no) trn from all_entries where date = to_date ('01012010','DDMMYYYY') group by substr(acc,1,4),currency, amount, module in this case i have error: *ORA-06502: PL/SQL: : character string buffer too small ... "WMSYS.WM_CONCAT_IMPL"* if i change to: select substr(acc,1,4),currency, amount, module, count(), (case when count() < 10 then wm_concat(trn_ref_no) else null end) trn from fcc.acvw_all_ac_entries where trn_dt = to_date ('05052010','DDMMYYYY') group by substr(acc,1,4),currency, amount, module to avoid buffer limit error. But even in this case i have the same error. How can i avoid this error?

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  • Python script repeated auto start up.

    - by Ali
    I am designing a python web app, where people can have an email sent to them on a particular day. So a user puts in his emai and date in a form and it gets stored in my database. My script would then search through the database looking for all records of todays date, retrive the email, sends them out and deletes the entry from the table. Is it possible to have a setup, where the script starts up automatically at a give time, say 1 pm everyday, sends out the email and then quits? If I have a continuously running script, i might go over the CPU limit of my shared web hosting. Or is the effect negligible? Ali

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  • System.Web.Security.FormsAuthentication.Encrypt returns null

    - by Mustafakidd
    I'm trying to encrypt some userData to create my own custom IPrincipal and IIdentity objects using Forms authentication - I've serialized an object representing my logged in user to Json and created my FormsAuthentication ticket like so: string user_item = GetJsonOfLoggedinUser();/*get JSON representation of my logged in user*/ System.Web.Security.FormsAuthenticationTicket ticket = new System.Web.Security.FormsAuthenticationTicket(1, WAM.Utilities.SessionHelper.LoggedInEmployee.F_NAME + " " + WAM.Utilities.SessionHelper.LoggedInEmployee.L_NAME, DateTime.Now, DateTime.Now.AddMinutes(30), false, user_item); string encrypted_ticket = System.Web.Security.FormsAuthentication.Encrypt(ticket); HttpCookie auth_cookie = new HttpCookie( System.Web.Security.FormsAuthentication.FormsCookieName, encrypted_ticket); Response.Cookies.Add(auth_cookie); However, the string encrypted_ticket is always null. Is there a limit on the length of the user_item string? Thanks Mustafa

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  • Best way to detect integer overflow in C/C++

    - by Chris Johnson
    I was writing a program in C++ to find all solutions of a^b = c (a to the power of b), where a, b and c together use all the digits 0-9 exactly once. The program looped over values of a and b, and ran a digit-counting routine each time on a, b and a^b to check if the digits condition was satisfied. However, spurious solutions can be generated when a^b overflows the integer limit. I ended up checking for this using code like: unsigned long b, c, c_test; ... c_test=c*b; // Possible overflow if (c_test/b != c) {/* There has been an overflow*/} else c=c_test; // No overflow Is there a better way of testing for overflow? I know that some chips have an internal flag that is set when overflow occurs, but I've never seen it accessed through C or C++.

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  • iPad Safari's mapping of mouse events to touch events in image-maps

    - by Tim
    My website makes extensive use of image-maps. The images are of pages from a medieval manuscript. The mouseOver event of the AREA tags has a tooltip attached to it, which displays a modern typographic transcription of the ancient script for the line the mouse is hovering over. I just checked my website out on the iPad at the Apple store. The iPad is many respects a joy to use, however, I am wondering about Apple's mapping of the mouseEvents to the finger-touch events. Apple probably had a good reason for doing things as they did, but their choices seem counterintuitive an overly complicated to me. Specifically, the iPad Safari browser clearly was responding to both fingerDown and fingerTap, and in different ways. When I tapped an area of the image-map, the tooltip wired to the mouse-over event pf the AREA tag was displayed, and remained visible until I tapped somewhere else. When I held my finger down on an area of the image-map, the area changed color. So if iPad Safari detects a mouseOver eventhandler, it executes the mouseOver code and apparently prevents the "click" event from propagating, so that if you also have something wired to the click event, it doesn't work? Is that right? But more importantly, why isn't fingerDown the iPad-Safari counterpart for mouseOver? FingerDown seems a more likely candidate than Tap when mapping the mousePOver event. I would have expected things to be mapped in this way: MouseClick : FingerTap (i.e. finger down and then immediately up) MouseOver : FingerDown (finger down and stays on the spot) If Apple had treated fingerDown as the counterpart to mouseOver, then the tooltip could be displayed upon FingerDown and made invisible again on fingerUp, which would be the counterpart to mouseOut. Perhaps someone could enlighten me about the thinking process that led Apple to these particular mouse-to-touch event-mappings? Thanks

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  • Asp.net Mvc 2: Repository, Paging, and Filtering how to?

    - by Dr. Zim
    It makes sense to pass a filter object to the repository so it can limit what records return: var myFilterObject = myFilterFactory.GetBlank(); myFilterObject.AddFilter( new Filter { "transmission", "eq", "Automatic"} ); var myCars = myRepository.GetCars(myfilterObject); Key question: how would you implement paging and where? Any links on how to return a LazyList from a Repository as it would apply here? Would this be part of the filter object? Something like: myFilterObject.AddFilter( new Filter { "StartAtRecord", "eq", "45"} ); myFilterObject.AddFilter( new Filter { "GetQuantity", "eq", "15"} ); var myCars = myRepository.GetCars(myfilterObject); I assume the repository must implement filtering, otherwise you would get all records.

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  • Defining reliable SIlverlight 4 architecture

    - by doteneter
    Hello everybody, It's my first question on SO. I know that there were many topics on Silverlight and architecture but didn't find answers that satisfies me. I'm ASP.NET MVC developer and are used to work on architectures built with the best practices (loose coupling with DI, etc.) Now I'm faced to the new Silverlight 4 project and would like to be sure I'm doing the best choices as I'm not experienced. Main features required by the applications are as follows : use existing SQL Server Database but with possibility to move to the cloud. using EF4 for the data acess with SQL Server. exitensibility : adding new modules without changing the main host. loose coupling. I was looking at different webcasts (Taulty, etc.), blogs about Silverlight and came up with the following architecture. EF 4 for data access (as specified with the requirements) WCF RIA Services for mid-tiers controling access to data for queries and enabling end-to-end support for data validation, authentication and roles. MEF Support for enabling modules. Unity 2.0 for DI. The problem is that I don't know how to define a reliable architecture where all these elements play well together. Should I use a framework instead like Prism or Caliburn? But for now I'm not sure what scenarios they support. What's the best usages for Unity in Silverlight ? I used to use IoC in ASP.NET MVC for loos coupling and other things like interception for audit logging. It seems that for Silverlight Unity doesn't support Interception. I would like to use it to enable loose coupling and to enable to move to the cloud if needed. Thanks in advance for your help.

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  • Embedded Glassfish - logging

    - by Walter White
    Hi all, I have migrated from log4j to logback and also am transitioning to Glassfish from Jetty. I haven't updated my logback configuration from what I had used with Jetty and consequently am not seeing any logs being written. What logging provider should I use? Should I just do my configuration with the Glassfish loggers in domain.xml? <access-log rotation-interval-in-minutes="15" rotation-suffix="yyyy-MM-dd"/> <log-service file="${com.sun.aas.instanceRoot}/logs/server.log" log-rotation-limit-in-bytes="2000000"> <module-log-levels/> </log-service> These are the defaults in domain.xml. I'd like to split the longs up into several files as well as control log level for each package. I think I can figure out how to configure them, but should I use Glassfish logging or can I use logback? Walter

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  • How do you handle 'SelectedItemChanged' events in a MVVM ViewModel?

    - by Travis
    I have some logic that depends upon two properties being set, as it executes when both properties have a value. For example: private void DoCalc() { if (string.IsNullOrEmpty(Property1) || string.IsNullOrEmpty(Property2)) return; Property3 = Property1 + " " + Property2; } That code would need to be executed every time Property1 or Property2 changed, but I'm having trouble figuring out how to do it in a stylistically acceptable manner. Here are the choices as I see them: 1) Call method from ViewModel I don't have a problem with this conceptually, as the logic is still in the ViewModel - I'm not a 'No code-behind' nazi. However, the 'trigger' logic (when either property changes) is still in the UI layer, which I don't love. The codebehind would look like this: void ComboBox_Property1_SelectedItemChanged(object sender, RoutedEventArgs e) { viewModel.DoCalc(); } 2) Call method from Property Setter This approach seems the most 'pure', but it also seems ugly, as if the logic is hidden. It would look like this: public string Property1 { get {return property1;} set { if (property1 != value) { property1 = value; NotifyPropertyChanged("Property1"); DoCalc(); } } } 3) Hook into the PropertyChanged event I'm now thinking this might be the right approach, but it feels weird to hook into the property changed event in the implementing viewmodel. It would look something like this: public ViewModel() { this.PropertyChanged += new PropertyChangedEventHandler(ViewModel_PropertyChanged); } void ViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e) { if (e.PropertyName == "Property1" || e.PropertyName == "Property2") { DoCalc(); } } So, my question is, if you were browsing through some source code with that requirement, which approach would you prefer to see implemented (and why?). Thanks for any input.

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  • Is there a perfect algorithm for chess?

    - by Overflown
    Dear Stack Overflow community, I was recently in a discussion with a non-coder person on the possibilities of chess computers. I'm not well versed in theory, but think I know enough. I argued that there could not exist a deterministic Turing machine that always won or stalemated at chess. I think that, even if you search the entire space of all combinations of player1/2 moves, the single move that the computer decides upon at each step is based on a heuristic. Being based on a heuristic, it does not necessarily beat ALL of the moves that the opponent could do. My friend thought, to the contrary, that a computer would always win or tie if it never made a "mistake" move (however do you define that?). However, being a programmer who has taken CS, I know that even your good choices - given a wise opponent - can force you to make "mistake" moves in the end. Even if you know everything, your next move is greedy in matching a heuristic. Most chess computers try to match a possible end game to the game in progress, which is essentially a dynamic programming traceback. Again, the endgame in question is avoidable though. -- thanks, Allan Edit: Hmm... looks like I ruffled some feathers here. That's good. Thinking about it again, it seems like there is no theoretical problem with solving a finite game like chess. I would argue that chess is a bit more complicated than checkers in that a win is not necessarily by numerical exhaustion of pieces, but by a mate. My original assertion is probably wrong, but then again I think I've pointed out something that is not yet satisfactorily proven (formally). I guess my thought experiment was that whenever a branch in the tree is taken, then the algorithm (or memorized paths) must find a path to a mate (without getting mated) for any possible branch on the opponent moves. After the discussion, I will buy that given more memory than we can possibly dream of, all these paths could be found.

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  • Tiny, very-basic outgoing MTA?

    - by Xeoncross
    I am looking for a very tiny Mail-Transfer-Agent (MTA) for my smaller VPS which only need to send emails for new accounts or notifications. Originally, I used PHP sockets and wrote a 4kb STMP class to connect to google SMTP and send the emails - but I would like to be free of the 500 emails a day (or whatever) limit they have. On larger VPS I can run Postfix - but it takes about 50MB which makes it too big for a 128/256MB VPS. So are there any very tiny MTA's out there - or is there a rundown of the protocol of sending email (I guess it works by forwarding the mail through other servers till it reaches the correct end mail server right?) so I could build a smaller bash or PHP script for this outgoing stuff?

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  • How to run batched WCF service calls in Silverlight BackgroundWorker

    - by Simon
    Is there any existing plumbing to run WCF calls in batches in a BackgroundWorker? Obviously since all Silverlight WCF calls are async - if I run them all in a backgroundworker they will all return instantly. I just don't want to implement a nasty hack if theres a nice way to run service calls and collect the results. Doesnt matter what order they are done in All operations are independent I'd like to have no more than 5 items running at once Edit: i've also noticed (when using Fiddler) that no more than about 7 calls are able to be sent at any one time. Even when running out-of-browser this limit applies. Is this due to my default browser settings - or configurable also. obviously its a poor man's solution (and not suitable for what i want) but something I'll probably need to take account of to make sure the rest of my app remains responsive if i'm running this as a background task and don't want it using up all my connections.

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  • WinRT GridView scrolling setup work differently on mouse/kb and touch

    - by Jay Kannan
    I'm trying to mimic the functionality of the NetFlix app, with a strip on the left that collapses on scrolling, I had to offset the tiles on the GridView a bit to the right so that they can accomodate that behavior. They seem to work alright in keyboard and scroll completely to the right (although I noticed the scrollbar suddenly grows in size when I hit the left boundaries. this totally changes when I use it on touch - I seem to have a limit on the right and the scrolling doesnt scroll past the last 100 pixels or so. how do I take care of this. I'm assuming it is related to the bug here, but didn't seem to solve the problem with that solution there. "Sticky scrolling" issue in WinRT XAML GridView control

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  • Tips on creating user interfaces and optimizing the user experience

    - by Saif Bechan
    I am currently working on a project where a lot of user interaction is going to take place. There is also a commercial side as people can buy certain items and services. In my opinion a good blend of user interface, speed and security is essential for these types of websites. It is fairly easy to use ajax and JavaScript nowadays to do almost everything, as there are a lot of libraries available such as jQuery and others. But this can have some performance and incompatibility issues. This can lead to users just going to the next website. The overall look of the website is important too. Where to place certain buttons, where to place certain types of articles such as faq and support. Where and how to display error messages so that the user sees them but are not bothering him. And an overall color scheme is important too. The basic question is: How to create an interface that triggers a user to buy/use your services I know psychology also plays a huge role in how users interact with your website. The color scheme for example is important. When the colors are irritating on a website you just want to click away. I have not found any articles that explain those concept. Does anyone have any tips and/or recourses where i can get some articles that guide you in making the correct choices for your website.

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  • Django JSON serializable error

    - by Hulk
    With the following code below, There is an error saying File "/home/user/web_pro/info/views.py", line 184, in headerview, raise TypeError("%r is not JSON serializable" % (o,)) TypeError: <lastname: jerry> is not JSON serializable In the models code header(models.Model): firstname = models.ForeignKey(Firstname) lastname = models.ForeignKey(Lastname) In the views code headerview(request): header = header.objects.filter(created_by=my_id).order_by(order_by)[offset:limit] l_array = [] l_array_obj = [] for obj in header: l_array_obj = [obj.title, obj.lastname ,obj.firstname ] l_array.append(l_array_obj) dictionary_l.update({'Data': l_array}) ; return HttpResponse(simplejson.dumps(dictionary_l), mimetype='application/javascript') what is this error and how to resolve this? thanks..

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  • nServiceBus with large XML messages

    - by Sean
    Hello, I have read about the true messaging and that instead of sending payload on the bus, it sends an identifier. In our case, we have a lot of legacy apps/services and those were designed to receive the payload of messages (xml) that is close to 4MB (close MSMQ limit). Is there a way for nService bus to handle large payload and persist messages automatically or another work-around, so that the publisher/subscriber services don't have to worry neither about the payload size, nor about how to de/re-hydrate the payload? Thank you in advance.

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  • Is tcerl for Mnesia production ready? Is there any alternatives?

    - by Sanoj
    I would like to create a scalable web service using Mnesia as database. However Mnesia per default isn't scalable for persistent storgage since it is using Dets (which has a 2GB limit) as backend. I have seen discussions about extending Mnesia with MnesiaEx and use tcerl as backend. It sounds good and have showed good performance. However, I have seen in a talk about Tokyo Cabinet and CouchDB with Mnesia that there are some issues: issues with durability issues with memory leaks issues with crashes Is tcerl + Mnesia really production ready? And is there any other alternatives? How doe´s companies overcome these issues if they use Mnesia in bigger systems? Is there a working solution with Mnesia and Tokyo Tyrant that is working better?

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