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• Are raw C++ pointers first class objects?

  - by Shailesh Kumar

  According to Wikipedia: An object is first-class when it: can be stored in variables and data structures can be passed as a parameter to a subroutine can be returned as the result of a subroutine can be constructed at runtime has intrinsic identity (independent of any given name) Somebody had once told me that raw pointers are not first class objects while smart pointers like std::auto_ptr are. But to me, a raw pointer (to an object or to a function) in C++ does seem to me to satisfy the conditions stated above to qualify as a first class object. Am I missing something?

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• mercurial setup for Visual Studio 2008 projects

  - by Johannes

  What is a good setup for .hgignore file when working with Visual Studio 2008? I mostly develop on my own, only occasionly I clone the repository for somebody else to work on it. I'm thinking about obj folders, .suo, .sln, .user files etc.. Can they just be included or are there file I shouldn't include? Thanks! p.s.: at the moment I do the following : ignore all .pdb files and all obj folders. # regexp syntax. syntax: glob *.pdb syntax: regexp /obj/

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• More 'Edit' navigation item

  - by lennox_19

  I am using a UITabBarController as well as a UINavigationController on my app. In my UITabBarController I am using more than 5 items so I automatically get the 'More' item. I've managed to add a saving procedure so the order of those items will be kept in case somebody changes the order etc. With 'More' active I get the More navigation controller with the 'Edit' item positioned under my UINavigationController. Both navigation controller are visible. When I click on 'Edit though the More navigation controller disappears and seem to be hiding under my UINavigationController and therefore I can't see/use the 'Done' function to save my new order What did I miss? Cheers

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• Find by include nil object error in rails

  - by SpyrosP

  I've been trying hard to solve this problem but i really don't know what is happening. I have this small piece of code : DiscoveredLocation.find_by_user_id(user.id, :include => [:boss_kills]) The models are : DiscoveredLocation(id, user_id, boss_location_id) BossKill(user_id, monster_id) and associations : Monster belongs_to :boss_location Monster has_many :boss_kills BossKill belongs_to :user BossKill belongs_to :monster DiscoveredLocation belongs_to :user DiscoveredLocation belongs_to :boss_location DiscoveredLocation has_many :monsters, :through => :boss_location DiscoveredLocation has_many :boss_kills, :through => :monsters When i executed the find_by i get this error : NoMethodError in BossesController#index You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.each If i change the include option to any other model, like :monster, it works great. I'm pretty much owned by this problem :P. Maybe somebody can help me ? :)

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• How to make javascript for font sizes fully language dependent?

  - by toonoid

  Hello All I have a multilanguage webiste English and Arabic. The javascript for the fontsizes is included in the theme not in the .css. Both language have different fontsize 16 and 12. When switching from English to Arabic the English letters such as ( dates and stuff like that ) are shown way too big. And when switching from English to Arabic the arabic letters are too small. I would really like to make this javascrip fully language dependent so that the English letters being shown in the Arabic version keeps the same fontsize as in English version and vice versa for arabic. //-- function setstyle(tag){ var elements = document.getElementsByTagName(tag); for (var i = 0; i The following script is the current javascript included in the theme. I would really appreciate it if somebody out there could help me with this problem. My knowledge of javascript is to be honest zero. Thanks TOONOID

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• How to duplicate INSERTS into a seperate table?

  - by Ash

  An iPhone application I have installed uses an SQLite database to log entries with basic INSERTS and DELETES being performed on it. However I wish to keep a permanent log of the INSERTS made to this table, so when an INSERT occurs, I want it to be written to another table also as to create a log. I don't have access to the application source code in order to modify the SQL statements made, I do have access to the SQLite database. Can I do this with triggers? If so can somebody provide a short example.

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• JavaScript - question regarding data structure

  - by orokusaki

  I'm trying to calculate somebody's bowel health based on a points system. I can edit the data structure, or logic in any way. I'm just trying to write a function and data structure to handle this ability. Pseudo calculator function: // Bowel health calculator var points = 0; If age is from 30 and 34: points += 1 If age is from 35 and 40: points += 2 If daily BMs is from 1 and 3: points -= 1 If daily BMs is from 4 and 6: points -= 2 return points; Pseudo data structure: var points_map = { age: { '30-34': 1, '35-40': 2 }, dbm: { '1-3': -1, '4-6': -2 } }; I have a full spreadsheet of data like this, and I am trying to write a DRY version of code and a DRY version of this data (ie, probably not a string for the '30-34', etc) in order to handle this sort of thing without a humongous number of switch statements.

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• Android TimeSqaureCalender

  - by Jack Lebbos

  i have searched for calendar libraries and i have found TimeSquare calender on this site https://github.com/square/android-times-square ive downloaded the file and add made an import for the folder in ecilipse and everithing worked fine then i have exported with gradle and imported in android studio and everything worked fine.THE problem is that i want to use this calender in an app i'm developping so i have added folder library as a module and synced with grade but when i define <com.squareup.timessquare.CalendarPickerView android:id="@+id/calendar_view" android:layout_width="match_parent" android:layout_height="match_parent" /> just in xml and run the app it crashes on setcontentview and i cannot make anything in plus can somebody tell me how to use this library correctly.

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• POSIX Threads and signal masks

  - by Max

  Is there a way to change the signal mask of a thread from another thread? I am supposed to write a multithreaded C application that doesn't use mutex, semaphores and condition variables, only signals. So it would look like something like this: The main Thread sends SIGUSR1 to its process and and one of the 2 threads (not including the main thread), will respond to the signal and block SIGUSR1 from the sigmask and sleep. Then the main thread sends SIGUSR1 again, the other thread will respond, block SIGUSR1 from its sigmask, unblock SIGUSR1 from the other threads sigmask, so it will respond to SIGUSR1 again. So essentially whenever the main thread sends SIGUSR1 the two other threads swap between each other. Can somebody help?

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• How to access objects of app Delegate into RootViewController

  - by Ashutosh

  I have a navigation based app in which i am calling a web service. I have done all the work which is required in the background to absorb the web services. The only thing left is to display it in a Table view. The data i want to display is stored in a Mutable array and i can see the data in console and this is in app delegate. I just want to pass this data somehow to root so that i can display it in table view. Could somebody help me with this.

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• Delegation, is this just opinionated or is there a common pattern?

  - by user1446714

  If I have a java class containing substantial code and I wish to add extra features, am I right in thinking the delegate class would have the additional features added as methods. Then my original class would create the delegate object and just call the extra functionality via the delegate instance? I am being told by somebody else that my original class should become the delegate and that the class containing the new functionality should contain an instance of the original class, to use as a delegate? This seemed a little backward to me, because there would be far more delegate calls because most of the code is now in the delegate.... I was always under the impression the delegate object would contain the additional new behaviour and an instance of it would be in the original class to inboke the new behaviour from?

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• PHP Code- How to check duplicate entries in Mysql Database

  - by yash bhavnani

  Hi guys, I am working on Google checkout API notification URL. I want to apply a check in my php code which will see if transaction ID present in transaction table of my DB, it will exit not process. I am struggling into applying here. Can somebody help? I want to check if trasaction ID exists in table of DB it will exit, it will not process: *case "new-order-notification": $sql = "update transactions set remote_trans_id=\"".$_REQUEST["google-order-number"]."\", updated=now() where id=".$_REQUEST["shopping-cart_items_item-1_merchant-item-id"]." "; execute($sql, $conn); break;* Regards

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• jquery doesn't work without alert ()

  - by Alexander Corotchi

  This is my jQuery: $(document).ready(function(){ $('#mycarousel').jflickrfeed({ limit: 14, qstrings: { id: '26339121@N07' }, itemTemplate: '<li><a href="{{image_b}}"><img src="{{image_m}}" alt="{{title}}" width="155" /></a></li>' }); alert("msg"); $('#mycarousel').jcarousel({ auto: 3, scroll: 1, wrap: 'last', animation: 800, initCallback: mycarousel_initCallback }); }); But if I remove "alert("msg");" this code doesn't work properly ... Somebody can help me with this issue ? Thanks !!!!!!!!

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• What's Your favorite f# use? where does f# makes life (a lot) easier (compared to c#)?

  - by luckyluke

  I've skimmed the stack and did not get the overflow as there is probably no such question. I'm just learning f# and I am A seasoned c# and .net dev. I am into financial apps and currently F# helps me a lot with maths calcs like zero finding or minimum finding (although I still want some good maths library there). I see that processing multiple items (files or smth) tends to be easier, but my GUI (web, win) are still c# based. I am in the team of 5 devs and we know that the new tool is out, we are learning it after hours (to pimp ourselves up) but maybe we shouldn't bash the door somebody already opened. So in business apps, whats Your first killer part of soft You would code in F# (if You could and would know IT would be easier, faster, more testable, easier to maintain etc.? Business rules? ImageProcessing? Data processing? hope it's not to subjective. luke

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• How to stream an HttpResponse with Django

  - by muudscope

  I'm trying to get the 'hello world' of streaming responses working for Django (1.2). I figured out how to use a generator and the yield function. But the response still not streaming. I suspect there's a middleware that's mucking with it -- maybe ETAG calculator? But I'm not sure how to disable it. Can somebody please help? Here's the "hello world" of streaming that I have so far: def stream_response(request): resp = HttpResponse( stream_response_generator()) return resp def stream_response_generator(): for x in range(1,11): yield "%s\n" % x # Returns a chunk of the response to the browser time.sleep(1)

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• Adding days to NSDate

  - by karthick

  I want add days to a date, I got many codes for this but none of them are working for me below shown is my code,please somebody help me to fix this issue int daysToAdd=[[appDlegateObj.selectedSkuData objectForKey:@"Release Time"] intValue]; NSTimeInterval secondsForFollowOn=daysToAdd*24*60*60; NSString *dateStr=[contentDic objectForKey:@"Date"]; NSDateFormatter *dateFormatter=[[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"yyyy-MM-dd"]; NSDate *dateFromString=[[NSDate alloc]init]; dateFromString=[dateFormatter dateFromString:dateStr]; [dateFormatter release]; NSDate *date=[dateFromString dateByAddingTimeInterval:secondsForFollowOn];

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• JavaScript Validation

  - by Sandeep Pathak

  Have a text field in the jsp which shows and takes input for ftp Url like below : ftp://ftplog:*****@10.203.291.177/abc/DS/Simulator/B11/B11/L2 The password field above is masked . Now when user tries the edit say ftp to sftp or File Path , He should re-type the password too , other wise What I will be getting in server is only "*" . Can somebody suggest the best way of validating this . It has a lot of test cases that has to be taken care of . Thanks .

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• FTP/SFTP module for .NET

  - by Angrius

  I am designing an auto downloader using .NET and C#. I was wondering if there is a decent/robust FTP/SFTP module out there that I can use, preferably free of charge. EDIT: I probably should've noted that I am looking for answer from somebody who tried several and found one that works very well. I currently use .NET wrapper for libcurl for FTP and it does not behave right. For example when I connect to FTP site with Filezilla and provide a path, it finds directory just fine. With libcurl, i get a header for 404 page saying path cannot be found. I am guessing that Filezilla gets 'home' directory correctly, and libcurl puts me to the root (i tried no path, and i had no permissions to access that directory). But anyways, I just don't know enough about FTP itself, so I would like something that just works. Thanks!

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• ack misses results (vs. grep)

  - by techpeace

  I'm sure I'm misunderstanding something about ack's file/directory ignore defaults, but perhaps somebody could shed some light on this for me: mbuck$ grep logout -R app/views/ Binary file app/views/shared/._header.html.erb.bak.swp matches Binary file app/views/shared/._header.html.erb.swp matches app/views/shared/_header.html.erb.bak: <%= link_to logout_text, logout_path, { :title => logout_text, :class => 'login-menuitem' } %> mbuck$ ack logout app/views/ mbuck$ Whereas... mbuck$ ack -u logout app/views/ Binary file app/views/shared/._header.html.erb.bak.swp matches Binary file app/views/shared/._header.html.erb.swp matches app/views/shared/_header.html.erb.bak 98:<%= link_to logout_text, logout_path, { :title => logout_text, :class => 'login-menuitem' } %> Simply calling ack without options can't find the result within a .bak file, but calling with the --unrestricted option can find the result. As far as I can tell, though, ack does not ignore .bak files by default.

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• Looking for Info on a Javascript Testing framework

  - by DaveDev

  Hi Can somebody fill me in on JavaScript Testing Frameworks? I'm working on a project now and as the JS (Mostly jQuery) libraries grow, it's getting more and more difficult to introduce change or refactor, because I have no way of guaranteeing the accuracy of the code without manually testing everything. I don't really know anything about JavaScript Testing Frameworks, or how they integrate/operate in a .Net project, so I thought I'd ask here. What would a good testing framework be for .Net? What does a JavaScript test look like? (e.g. with NUnit, I have [TestFixture] classes & [Test] methods in a ProjectTests assembly) How do I run a javascript test? What are the conceptual differences between testing JS & testing C#? Is there anything else that would be worth knowing? Thanks Dave

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• How to retrieve path for a file embedded in Resources (Resource Manager)

  - by curiousone

  I am trying to retrieve file path for a html file that is embedded in resource (resx file) in VS2008 C# project. I want to give path of this file to native webbrowser control (PIEHtml) to be able to navigate (DTM_NAVIGATE) in my application. I know I can pass the string to this control using DTM_ADDTEXTW but since html text size is so big, I dont want to pass string to the control. I need to somehow extract the file path for this html file embedded inside resource manager. I tried using but this does not give the file path of html inside assembly: private ResourceManager resManager = new ResourceManager("AppName.FolderName.FileName", System.Reflection.Assembly.GetExecutingAssembly()); this.lbl.Text = resManager.GetString("StringInResources"); and also read Retrieving Resources in Satellite Assemblies but it did not solve my problem. Can somebody please provide info as to how to achieve this ?

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• Err Web Service?

  - by j-t-s

  Hi All I am trying to implement a feature. But I've never had anything to do with "Web Services" before, other than using them. I have a desktop application, and I want that application to be able to sort of "post" some information (i.e. email address, username, user-selected options (just plain text) etc) to an application or "web service" on my ASP.NET web server. Can somebody please guide me in the right direction? How would I accomplish this? Thank you :) Jason

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• Using NetBeans profiler with Guice classes

  - by Karussell

  How can I use the profiler from NetBeans 6.8 or 6.9 (choosing 'entire application') with guice enhanced classes? I am using google guice 2.0 (with warp persist 2.0-20090214) for some classes and wanted to profile those classes. But I cannot see a result for those classes. The only result I can see is for one method 'EnhancedClass.access$000' which is not very helpful. Other classes are working. Does somebody know a workaround? Or know what I am doing wrong?

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• Two view App with root template view

  - by Tieman

  Hi I was wanted to do Application witch have a root template view with a nice logo on top or something adn load other views just below (here is what I have right now: Test App ) But I have a little problem. If I'll remove a comment in file TestAppDelegate.m on line 58 //[currentView release]; Application will crash with bunch of errors when I try to switch views. But if I comment this line Project analyzer is telling me that I have a potential leak with currentView variable. Can somebody spare some time and see in that code what I did wrong?

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• Cell Dequeue problem when table inside another table's cell content view

  - by Shailesh Kanzariya

  I am using two table views (Main Table and Sub Table), one table inside other's cell. I am adding Sub Table in Main Table's cell content view. I am also using different Cell Identifier for both table cells. Now, issue is : When - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath is called, very first time cell of Main Table is generated and when I scroll up/down they all are just dequeued, so it is expected and standard behavior and working fine. But, cell of Sub Table is getting created/allocated every time. It is not dequeued as it should be. I guess, its happening because Sub Table is part of Main Table's Cell Content view. But not sure and don't know how to resolve it. Can somebody help me to find the solution?

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