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• How to inline a function for only release build.

  - by Benjamin

  // common.h // This is foo funtion. It has a body. __inline void foo() { /* something */ } // a.cpp #include "common.h" // for foo function // Call foo // b.cpp #include "common.h" // for foo function // Call foo I would like to inline the foo function only when I build for release. -I dont want to inline functions for Debug build. I tried it but linker errors annoyed me. In this case, foo function's body is defined in common.h header file. so if I just do //common.h #if !defined(_DEBUG) __inline #endif void foo() { /* something */ } I will be met a link error in DEBUG build. Because two modules try to include common.h. I have no idea to solve it. Is it possible?

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• keep open windows console after a python syntax error

  - by basweber

  File associations on my machine (winxp home) are such that a python script is directly opened with the python interpreter. If I double click on a python script a console window runs and every thing is fine - as long as there is no syntax error in the script. In that case the console window opens up for a moment but it is closed immediately. Too fast to read the error message. Of course their would be the possibility to manually open a console window and to execute the script by typing python myscript.py but I am sure that there is a more convenient (i.e. "double click based") solution.

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• Python: Repeat elements in a list comprehension?

  - by User

  I have the following list comprehension which returns a list of coordinate objects for each location. coordinate_list = [Coordinates(location.latitude, location.longitude) for location in locations] This works. Now suppose the location object has a number_of_times member. I want a list comprehension to generate n Coordinate objects where n is the number_of_times for the particular location. So if a location has number_of_times = 5 then the coordinates for that location will be repeated 5 times in the list. (Maybe this is a case for a for-loop but I'm curious if it can be done via list comprehensions)

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• ListViewGroup not sorting correctly

  - by Andrew

  I'm using a ListView control in a C# WinForms application. Items in the list are added to a ListViewGroup (in this case, grouping by country). The one thing that isn't working as expected is that the column sorting appears to be strange. I've hooked into the ListViewItemSorter property of the ListView and everything sorts perfectly except when the country column is sorted in descending order (that is, Z-A). Regardless of how the list sort occurs the groups show in ascending order. Can anyone give me a nudge in the right direction? EDIT: FWIW, .NET 3.5 on Vista.

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• PHP MySQLi and MySQLi_STMT: Which insert_id to use?

  - by Carvell Fenton

  Hello all, Both the MySQLi and MySQLi_STMT classes have an $insert_id property. If I am connected to my database using a MySQLi object (say $db), and then I perform an INSERT with a MySQLi_STMT object (say $stmt), to get the id of the last INSERT, should I use: $last_id = $db->insert_id; or $last_id = $stmt->insert_id; Or would they be the same, in which case it doesn't matter? I thought this might be a quick answer for someone, and save me the time of writing the test code to check it. Thanks in advance as always.

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• Documenting and defining content types for a CMS or similar project

  - by Rimian

  I'm writing up some documentation on a Drupal project and my task is to define the content types and their attributes. The intended audience is project managers and developers. So it could be a high level document that gives an overview of the system. (I think that's how I describe it: high level rather than high detail) At the moment I'm using open office and bullet points but it seems like an amateurish method when I need to describe details that could be useful for a developer (me). Something like UML would describe detail but is probably more complicated than I need right now and could be too technical for others on the team. Are there any universal methods or templates that I can use to describe information in this case?

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• Visual Studio 2010 - Export (Project) Template menu option grayed out

  - by Jakobud

  In Visual Studio, I want to make a simple C++ project and export it out as a template, so I can use the template to start new projects to save me time. But the Export Template menu option is always grayed out. I've not once been able to click it. Anyone know why? Anyone know how to accomplish what I need (besides the obvious "make a copy of an existing project in explorer")? It seems like project templates should be a no-brainer feature for VS. This seems to be the case for Visual Studio 2005, 2010 (I probably 2008 as well I haven't checked).

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• .NEt on WIN to Mono on Ubuntu

  - by Srikanth

  I am looking at a possibility to change my ASP.NET 2.0 app to Mono framework. I have used the mono analyzer tool and it does detect some p/invoke and interop dependencies. For ex. 1) We use excel interops and on linux we are looking to use staroffice/Openoffice instead. Is there an easy way of substituting excel with staroffice? (I know it sounds bizarre, but just don't want to miss out in case anyone has done it already.) 2) LDAP auth: What could be the best alternative in Ubuntu (or an other flavour of Linux) ? 3) Is there an ajax framework for mono? Preferably with similar controls as Atlas?? I hope I am not too ambitious here.. thanks.

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• Does a C++ destructor always or only sometimes call data member destructors?

  - by Magnus

  I'm trying to validate my understanding of C++ destructors. I've read many times that C++ supplies a default destructor if I don't write one myself. But does this mean that if I DO write a destructor that the compiler WON'T still provide the default cleanup of stack-allocated class fields? My hunch is that the only sane behavior would be that all class fields are destroyed no matter what, whether I provide my own destructor or not. In which case the statement I've read so many times is actually a little misleading and could be better stated as: "Whether or not you write your own destructor, the C++ compiler always writes a default destructor-like sequence to deallocate the member variables of your class. You may then specify additional deallocations or other tasks as needed by defining your own destructor" Is this correct?

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• Is it possible to iterate all the OutputCache keys?

  - by Deane

  Is it possible to iterate the OutputCache keys? I know you can remove them individually via HttpResponse.RemoveOutputCacheItem(), but is there a way I can iterate all the keys to see what's in the collection? I searched through Object Viewer, but didn't see anything. Worst case, I can maintain my own index. Since I'm doing everything by VaryByCustom, they get "fed" through a method in global.asax. It just strikes me that there has to be a more elegant way of doing this.

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• How do you get clients to use your bug tracking system?

  - by louism

  on larger projects i use a simple bug tracking system that's designed to be used by clients i have a lot of trouble convincing clients to use it (they send bug reports via email) does anyone have any strategies they can suggested? also, i have been playing around with a theory as to why this is the case; it goes like this: asking a client to log a bug is like taking your car to a mechanic for a service, and the mechanic hands you the engine oil and says "here, pop that in". basically, the client has paid you to do the work, logging a bug sounds too much like work, so they want you to do it thoughts?

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• changing the saved contents of the model , edit model fileds once saved

  - by imran-glt

  hi I have extended the user model and added extra fields to it i.e "latitude" "longitude" and status and than save it. up to here it works fine. but i want to allow the user to change his/her "latitude" "longitude" whenever he/she needs like the hotmail and yahoo allows change account feature. in my case the user only wants to chage the latitude and longitude i tried it in this way but it didnt work. is this the right way to do it ...... or is there any other way to change the saved contents view.py def status_change(request): print "status_change function called" if request.method == "POST": rform = registerForm(data = request.POST) uform = UserForm(data = request.POST) if rform.is_valid(): user = uform.save() register = rform.save() register.user = user register.save() return render_to_response('home.html') else: rform = registerForm() return render_to_response('status_change.html',{'rform':rform})

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• How to define supported BlackBerry OS versions and models for application?

  - by Lyubomyr Dutko

  After company wins a project it is usual to mention in contract what devices are supported and what OS versions are supported. But taking into account BlackBerry it appears sometimes to be tricky, as you can have the same device model, but two and(or) more different OS versions (or within same OS different package versions). And in this situation application may need to be updated. So the main question here is what is expected to be mentioned in contract? Could you please share some your experience of resolving such problems? So as a good example can be case of video playback issue on Storm: some issue exists on 5.0.0.XXX (network provider A) and doesn't exist on 5.0.0.YYY (network provider B), or could be following: 5.0.0.XXX1 (network provider A) - issue exist 5.0.0.XXX2 (network provider A) - issue doesn't exist The point here is to define some boundaries of development company responsibility

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• jQuery object are immutable?

  - by Daniel

  Hello a new noob on jQuery here and I was wondering if jQuery objects are immutable. For example: var obj1 = $("<tag></tag>"); var obj2 = obj1.append("something"); Will obj1 and obj2 be the same meaning obj2 will reference obj1? UPDATE: The above example kind of scratches the surface of what i want to know, a more accurate question is : If i chain function from the jQuery api will they return the same object or a new one (as the case with strings in Java)?

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• How does this If conditional work in Python?

  - by Sergio Boombastic

  from google.appengine.api import users from google.appengine.ext import webapp from google.appengine.ext.webapp.util import run_wsgi_app class MainPage(webapp.RequestHandler): def get(self): user = users.get_current_user() if user: self.response.headers['Content-Type'] = 'text/plain' self.response.out.write('Hello, ' + user.nickname()) else: self.redirect(users.create_login_url(self.request.uri)) application = webapp.WSGIApplication( [('/', MainPage)], debug=True) def main(): run_wsgi_app(application) if __name__ == "__main__": main() I don't understand how this line works: if user: self.response.headers['Content-Type'] = 'text/plain' self.response.out.write('Hello, ' + user.nickname()) else: self.redirect(users.create_login_url(self.request.uri)) I'm guessing the users.get_current_user() return a boolean? Then, if that is the case how can it get a .nickname() method? Thanks for the guidance.

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• .NET security: how to check if a method is allowed to execute under current user's perrmissions

  - by Gart

  Given an ASP.NET MVC Controller class declaration: public class ItemController : Controller { public ActionResult Index() { // ... } public ActionResult Details() { // ... } [Authorize(Roles="Admin, Editor")] public ActionResult Edit() { // ... } [Authorized(Roles="Admin")] public ActionResult Delete() { // .. } } I need to reflect a list of methods in this class which may be invoked with the current user's permissions. The [Authorized] attribute is specific to ASP.NET MVC, and this is only an example. I would prefer a universal solution for this problem which works for any .NET class. Please share some ideas of what could be done in this case.

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• Is it possible to pickle python "units" units?

  - by Ajaxamander

  I'm using the Python "units" package (http://pypi.python.org/pypi/units/) and I've run into some trouble when trying to pickle them. I've tried to boil it down to the simplest possible to case to try and figure out what's going on. Here's my simple test: from units import unit, named_unit from units.predefined import define_units from units.compatibility import compatible from units.registry import REGISTRY a = unit('m') a_p = pickle.dumps(a) a_up = pickle.loads(a_p) logging.info(repr(unit('m'))) logging.info(repr(a)) logging.info(repr(a_up)) logging.info(a.is_si()) logging.info(a_up.is_si()) logging.info( compatible(a,a_up) ) logging.info(a(10) + a_up(10)) The output I'm seeing when I run this is: LeafUnit('m', True) LeafUnit('m', True) LeafUnit('m', True) True True False IncompatibleUnitsError I'd understand if pickling units broke them, if it weren't for the fact that repr() is returning identical results for them. What am I missing? This is using v0.04 of the units package, and Google App Engine 1.4 SDK 1

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• Preventing Spoofing with Paypal

  - by wcpro

  I have a scenario where i need to have a user checkout through PayPal and then once we receive the payment then we create a membership record in our membership site. The PayPal requires a "return" field when you submit the form button that will take the user back to our page once the order has been successfully processed. On that page is where we actually track the sale and fire a chunk of javascript to track the sale. So my question is this, how can i make sure that the return page comes from PayPal and is not spoofed by a user in the system. I know there is a way to use the notify_url to have PayPal post back to our system, but in this case i have to run a chunk of javascript. Is there an easy way to do this, or would i have to write some looping/timeout function that checks to see if the notify post has come through? Im using .net to do the posting to paypal

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• Why is this postgres function failing only on one specifc database?

  - by Ollie Edwards

  I'm trying to fix an issue with a legacy database. The quote_literal function is not working for a specific database on an 8.4 install of postgres. Here's my results on a fresh test database: select quote_literal(42); quote_literal --------------- '42' (1 row) And now the same on the target db select quote_literal(42); ERROR: function quote_literal(integer) is not unique LINE 1: select quote_literal(42); ^ HINT: Could not choose a best candidate function. You might need to add explicit type casts. AIUI, the quote_literal(anyvalue) function should handle integer values ok, and this seems to be upheld by the first test. So I figured the quote_literal function must have been overridden in this db but no this doesn't seem to be the case. I could override it with a specific quote_literal(integer) function but I don't see why I should have to. The question is what is could be causing the failure of this function in this specific database whilst not affecting the fresh db?

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• Android: stack management for views in a tab?

  - by wei

  I see some answers here prefer views over activities as contents of tabs. Correct me if I am wrong. My understanding is that by switching out views, it's possible to keep the navigation flow inside a tab (more user friendly, I think). But I wonder how to manage the view stack then in case of the back button events. Also this could cause one giant Activity with large amount of views, which might not be good. So I wish to know why exactly views as contents is preferred before I change my current application to this. Thanks,

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• Huge page buffer vs. multiple simultaneous processes

  - by Andrei K.

  One of our customer has a 35 Gb database with average active connections count about 70-80. Some tables in database have more than 10M records per table. Now they have bought new server: 4 * 6 Core = 24 Cores CPU, 48 Gb RAM, 2 RAID controllers 256 Mb cache, with 8 SAS 15K HDD on each. 64bit OS. I'm wondering, what would be a fastest configuration: 1) FB 2.5 SuperServer with huge buffer 8192 * 3500000 pages = 29 Gb or 2) FB 2.5 Classic with small buffer of 1000 pages. Maybe some one has tested such case before and will save me days of work :) Thanks in advance.

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• How to tell process id within Python

  - by R S

  Hey, I am working with a cluster system over linux (www.mosix.org) that allows me to run jobs and have the system run them on different computers. Jobs are run like so: mosrun ls & This will naturally create the process and run it on the background, returning the process id, like so: [1] 29199 Later it will return. I am writing a Python infrastructure that would run jobs and control them. For that I want to run jobs using the mosrun program as above, and save the process ID of the spawned process (29199 in this case). This naturally cannot be done using os.system or commands.getoutput, as the printed ID is not what the process prints to output... Any clues? Edit: Since the python script is only meant to initially run the script, the scripts need to run longer than the python shell. I guess it means the mosrun process cannot be the script's "son process". Any suggestions? Thanks

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• How to build the ViewModel in MVVM not to violate the Single Responsibility Principle?

  - by Przemek

  Robert Martin says: "There should never be more than one reason for a class to change". Let's consider the ViewModel class which is bound to a View. It is possible (or even probable) that the ViewModel consists of properties that are not really related to each other. For small views the ViewModel may be quite coherent, but while the application gets more complex the ViewModel will expose data that will be subject to change for different and unrelated reasons. Should we worry about the SRP principle in the case of ViewModel class or not?

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• How to stop/override a Jquery TimeOut function?

  - by Tom

  Hi, I have a small jquery snippet that displays notification message at the top of the screen in response to user actions on a page. The notification is often displayed after Ajax actions with dynamic content inside it. For example: $("#mini-txt").html("Thank you!"); $("#mini").fadeIn("fast"); setTimeout(function() {$("#mini").animate({height: "hide", opacity: "hide"}, "medium");}, 3000); The notification works well, except when a user does two or more actions in rapid succession, in which case the TimeOut function will confuse itself and the second message appears to come inside the previous 3000 milliseconds. Is there a way to "kill" the previous notification if a new action is performed. I've got no problem with the actions/selectors, just the TimeOut function.... either stopping it or overriding it somehow. Or perhaps there's a better alternative for getting the message to linger on the screen for a few seconds before disappearing? Thank you.

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• efficient way to detect if an image is empty

  - by Jos

  Hi, I need a very fast method to detect if an image is empty. Im my case then all pixels are white and transparant. The images are png's. My current method is to load them in a memory bitmap and check each pixel value, but this is way to slow. Is there a more efficient way? This is my current code: 'Lock the bitmap bits. Dim bmpData As System.Drawing.Imaging.BitmapData = bmp.LockBits(rectBmp, _ Drawing.Imaging.ImageLockMode.ReadOnly, bmp.PixelFormat) Try Dim x As Integer Dim y As Integer For y = 0 To bmpData.Height - 1 For x = 0 To bmpData.Width - 1 If System.Runtime.InteropServices.Marshal.ReadByte(bmpData.Scan0, (bmpData.Stride * y) + (4 * x) + 3) <> 0 Then Return True Exit For End If Next Next Finally bmp.UnlockBits(bmpData) End Try

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