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• What to read as a good quick review and intro into development process methodologies?

  - by Ivan

  Being mostly self-taught freestyle developer and having no experience of working in teams of professionals in serious software companies, having only a very general idea of how the software development is should really be done, I think I've came to a point, when I begin struggling from lack of order in my work. I think I should get acquainted with professional software development technologies to optimize my own productivity and to extend my choice of work by increasing capabilities to work in teams and bigger companies. What should I begin with? Of course I am googling on this subject right now, but maybe hou have some real experience based recommendations to share?

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• Initializing and accessing a pointer from an array of pointers

  - by idealistikz

  Suppose I have the following: void **Init(int numElems) { //What is the best way to intialize 'ptrElems' to store an array of void *'s? void **ptrElems = malloc(numElems * sizeof(void *)); return ptrElems; } //What is the best way to return a pointer pointing at the index passed as a parameter? void **GetPtr(void **ptrElems, int index) { void **elem = elems + (index * sizeof(void *)); return elem; } First, what is the best way to intialize 'ptrElems' to store an array of pointers? I use malloc because assigning it to an array will not persist after the end of the function. Second, what is the best way to point to the pointer at the specified index? I tried typecasting the first line of the 'GetPtr' function to ensure proper pointer arithmetic, but I receive the warning, 'initialization from incompatible pointer type'. Is it necessary to typecast?

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• Unexpected key-value behavior in a Core Data Context

  - by ????

  If I create an array of strings (via key-value coding) containing the names of a Managed Object entity's attributes which are stored in the App Delegate the first time, I get an array of NSStrings without any problems. If I subsequently make the same call later from the same entry point in code, that same collection becomes an array of NULL objects- even though nothing in the Core Data Context has changed. One unappealing work-around involves re-creating the string array every time, but I'm wondering if anyone has a guess as to what's happening behind the scenes. // Return an array of strings with the names of attributes the Activity entity - (NSArray *)activityAttributeNames { #pragma mark ALWAYS REFRESH THE ENTITY NAMES? //if (activityAttributeNames == nil) { // Create an entity pointer for Activity NSEntityDescription *entity = [NSEntityDescription entityForName:@"Activity" inManagedObjectContext:managedObjectContext]; NSArray *entityAttributeArray = [[NSArray alloc] initWithArray:[[entity attributesByName] allValues]]; // Extract the names of the attributes with Key-Value Coding activityAttributeNames = [entityAttributeArray valueForKeyPath:@"name"]; [entityAttributeArray release]; //} return activityAttributeNames; }

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• Mysql retrieve polygon data

  - by dskanth

  Hi, i have been developing a site that stores spatial data in mysql database, like that of buildings, gardens, etc. in the form of polygons (latitudes and longitudes). I want to know how to retrieve polygon data in mysql. I have seen this sample query to insert a polygon data: http://amper.110mb.com/SPAT/mysql_initgeometry2.htm But now i want to know how to retrieve data from the table, based on certain constraints like: "where latitude < 9.33 and longitude > 22.4" Also how do i find whether a point lies inside or outside of a polygon

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• Text wrap in a <canvas> element

  - by Gwood

  I am trying to add text on an image using the <canvas> element. First the image is drawn and on the image the text is drawn. So far so good. But where I am facing a problem is that if the text is too long, it gets cut off in the start and end by the canvas. I don't plan to resize the canvas, but I was wondering how to wrap the long text into multiple lines so that all of it gets displayed. Can anyone point me at the right direction?

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• FACEBOOK LINTER ERROR: value for property 'og:image:url' could not be parsed as type 'url'

  - by Martin Devarda

  I've read all threads in stack overflow about this issue, but my problem persists. THE PROBLEM IS ON THIS PAGE: http://www.organirama.it/minisite-demo/001.html THE PAGE CONTAINS THIS TAGS <meta property="og:title" content="A wonderful page" /> <meta property="og:type" content="video.movie" /> <meta property="og:url" content="http://www.organirama.com/minisite-demo/001.html" /> <meta property="og:image" content="http:/www.organirama.com/minisite-demo/photos-small/001.png" /> <meta property="og:site_name" content="Organirama"/> <meta property="fb:admins" content="1468447924"/> LINTER ERROR Object at URL 'http://www.organirama.com/minisite-demo/001.html' of type 'video.movie' is invalid because the given value 'http:/www.organirama.com/minisite-demo/photos-small/001.png' for property 'og:image:url' could not be parsed as type 'url'. WHAT I DISCOVERED The problem seems somehow related to the domain. Infact, if I make og:image point to another image on another domain, everything works.

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• What segments does C compiled program use?

  - by b-gen-jack-o-neill

  Hi, I read on OSDev wiki, that protected mode of x86 architecture allow you to create separate segments for code and data, while you cannot write into code section. That Windows (yes, this is the platform) loads new code into code segment, and data are created on data segment. But, if this is the case, how does program know it must switch segments to the data segment? Becouse if I understand it right, all adress instructions point to the segment you run the code from, unless you switch the descriptor. But I also read, that so colled flat memory model allows you to run code and data within one segment. But I read this only in connection to assembler. So, please, what is the case with C compiled code on Windows? Thanks.

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• Dll only loads correctly via LoadLibrary?

  - by Steve

  I'm trying to use dbghelp.dll. If I set it up in the VS2008 properties to point to the correct library and header file, and put dbghelp.dll in the same directory as the executable, one of the functions in the dll fails. If I LoadLibrary the dll, everything that function works. I've looked at the header that gets included via the VS option, and the right one is being pulled in. The correct lib is being pulled in (checked via /verbose option), and depends.exe shows the correct dll is loaded. Does anyone know why I can't get this to work? I'll probably just go with LoadLibrary, but I'm genuinely stumped on this one. EDIT: SymfromAddr fails with an "error 87", whatever that is. If I load the dll via LoadLibrary, it works.

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• nsmutabledictionary is showing memory leak

  - by Narasimhaiah Kolli

  Why doing assigning nil to nsmutabledictioanry and allocating is crashing ans showing memory release at this point of place?? self.delegate.replenishAddedmaterials = nil; self.delegate.replenishAddedmaterials = [[NSMutableDictionary alloc] init]; MATERIAL_ITEM *materialItem = [[MATERIAL_ITEM alloc] init]; VENDOR_HEADER *vendor = [[VENDOR_HEADER alloc] init]; PURCHASING_ORG_HEADER *purOrg = [[PURCHASING_ORG_HEADER alloc] init]; [self.delegate.replenishAddedmaterials setObject:[NSMutableArray arrayWithObject:materialItem] forKey:materialItem]; [[self.delegate.replenishAddedmaterials objectForKey:materialItem] addObject:vendor]; [[self.delegate.replenishAddedmaterials objectForKey:materialItem] addObject:purOrg]; After executing allocation of nsmutabledictionary i am getting following message * -[MATERIAL_ITEM release]: message sent to deallocated instance 0x11e62810I have implemented my project in ARC

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• How to modify XML on Objective-C?

  - by Vic

  Hi, I'm working on a project for the iPad, I need to read and write to an xml file, which is also used by the counter part of the application in windows. The problem that I have is that I've been looking around but I haven't found a way to modify an element or attribute in an xml, without having to build the whole xml again. I saw this other post, which is basically the same problem that I have, and I also end it up in the same point as the person asking the question, NSXMLParser and TouchXML are read only and do not allowed me to modify my xml. Any other suggestion about what can I use? Thanks!

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• Gnome screensaver

  - by BParker

  Hi, After many years of Windows development in C/C++ i've decided to make a move to linux, and see if i can put together a simple screen saver. The code is an SDL based OpenGL particle engine affair, nothing too complex. I've got the code running ok as a stand-alone app, but i have been having some trouble finding out how to build a screen saver app. I'm running ubuntu 10.04 if that makes much difference, but i was wondering if anyone can point me in the direction of a decent tutorial on building basic gnome screen savers. Thanks

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• How to install jGroups for NetBeans 6.7.1

  - by Shaitan00

  Newbie question - I am using NetBeans 6.7.1 (just installed it) and wanted to write an application using jGroups ... From the sample I need to import org.jgroups.*, but in NetBeans I get the following error: package org.jgroups does not exist So, went on the net and download jGroups (src and bin), been trying to figure out how to get it to work but nothing I do seems to solve the problem. Anyone able to point me in the right direction? What files do I put where and what do I need to change in NetBeans so that it starts to work? Thanks,

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• Book resources for x86/x64 assembly programming on Win platform

  - by Scott Davies

  Hello, I ran a search for assembly language resources on stackoverflow.com and found some interesting results, but they seemed to boil down to two groups: 1) Assembly references to old ia32 architecture, such as the 80386 to Pentium 2) Windows agnostic books. Most of the commenters make the point that assembler is CPU dependent and that the OS is irrelevant, but it seems pointless to me to pick a book that has assembly examples that refer to MS-DOS interrupts and memory layouts. Likewise, learning assembler on Linux would seem to produce Linux executables Are there any: 1) Modern 2) x86/x64 3) on Windows platform - book resources available ? The reason I am targeting the Win platform is I would like to do low-level, OS internals programming, to supplement my Win C/C++ work. Thanks

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• Model View Presenter plus ASP.NET Web Service; where does the asmx live?

  - by Dirk

  I've been slowly transitioning from a traditional web forms architecture to the MVP pattern (Passive View). So far, it's been fairly easy to implement b/c the views I've dealt with have all employed a classic PostBack model. However, I've come across my first view that will refresh portions of itself via web services. I can't grok where the web service should live (Presenter I think) or how to expose that asmx end point to my View while still maintaining the clean separation of concerns/testability that MVP affords me. I've searched far and wide for some examples on how this might be implemented and have come up with nothing. Please help!

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• Troubleshooting occasional timeout of select() in windows

  - by JonF

  I'm having an occasional problem with select() timing out on me. I have it set for twenty seconds. The system will handle 100's of transactions correctly, but occasionally one fails with the selet timing out. It does about 1 transaction every few seconds, opening and closing the tcp conncetion with each transaction. I thought the server my app was connecting to might have to many connection attempts pending, but no 4226 events are showing up in the logs One more point thing I noticed when using wireshark that I'm getting a SYN,RST in response to the SYN I am appearently sending. This only happens a few times over the first second or two, then I don't see any more activity in Wireshark

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• Project Euler #163 understanding

  - by Paul

  I spent quite a long time searching for a solution to this problem. I drew tons of cross-hatched triangles, counted the triangles in simple cases, and searched for some sort of pattern. Unfortunately, I hit the wall. I'm pretty sure my programming/math skills did not meet the prereq for this problem. So I found a solution online in order to gain access to the forums. I didn't understand most of the methods at all, and some just seemed too complicated. Can anyone give me an understanding of this problem? One of the methods, found here: http://www.math.uni-bielefeld.de/~sillke/SEQUENCES/grid-triangles (Problem C) allowed for a single function to be used. How did they come up with that solution? At this point, I'd really just like to understand some of the concepts behind this interesting problem. I know looking up the solution was not part of the Euler spirit, but I'm fairly sure I would not have solved this problem anyhow.

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• Interacting with Sql Server jobs programmatically

  - by Shlomo

  I would like to be able to interact with a Sql Server job programmatically through a web page. What is the best way to do this? Through SMO? The job will take a long time to run, so it needs to fire and forget, and I would also like to be able to stop it. If SMO, can anybody point me to an easy tutorial? Google gave me some fairly basic stuff but nothing substantial... SQL Server 2008, ASP.NET MVC web app.

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• Can a flex app (or a portion of a flex app) be made transparent to mouse clicks?

  - by Sam Jones

  I need to superimpose my Flex app above a plain HTML control on a web page, and be able to click through the Flex app to interact with the HTML control. Is there any way to do this? No permutation of mouseEnabled="false" or mouseChildren="false" seems to have the desired effect. Context: trying to integrate Google Earth API (JavaScript/HTML) with my flex app. I am leaving a portion of the flex app transparent and empty, and positioning the Google Earth widget just below that point in the z-index. Google Earth has to be behind flex, because there are some Flex controls periodically displayed in that space.

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• StructureMap 'conditional singleton' for Lucene.Net IndexReader

  - by Gareth D

  I have a threadsafe object that is expensive to create and needs to be available through my application (a Lucene.Net IndexReader). The object can become invalid, at which point I need to recreate it (IndexReader.IsCurrent is false, need a new instance using IndexReader.Reopen). I'd like to able to use an IoC container (StructureMap) to manage the creation of the object, but I can't work out if this scenario is possible. It feels like some kind of "conditional singleton" lifecycle. Does StructureMap provide such a feature? Any alternative suggestions?

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• Handling Messages in Console Apps/DLLs in C++ Win32

  - by vsimon

  I would like to have the ability to process Win32 messages in a console app and/or inside a standalone DLL. I have been able to do it in .NET with the following article and it works great in C# inside a console app and standalone DLL http://msdn.microsoft.com/en-us/magazine/cc163417.aspx Is there a way to do the equivalent with C/C++ Win32 APIs? I have tried doing RegisterClassEx(...) and CreateWindow(...) even passing in HWND_MESSAGE to hWndParent but the trouble is that after the "invisible" window is created messages are not being processed probably due to the lack of a message pump. Where would the message pump go if you had a DLL entry point? I have tried creating another thread in a DLL and put while(GetMesage(..)) there but that did not work either. Any ideas?

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• 302 vs 301 redirect in this specific case

  - by Binder

  We have a website that displays information in a location based manner, i.e. it detects the IP of the visiting user and redirects him/her to an appropriate landing page; for e.g. a user coming from 'Egypt' will be redirected to http://www.mysite.com/egypt/cairo and a user visting from dubai will be redirected to http://www.mysite.com/uae/dubai, so on and so forth and we cater to multiple locations in the middle-east. Now, we have been advised by our SEO consultant that we should put a 301 (permanent redirect) on http://www.mysite.com to point to http://www.mysite.com/ksa/riyadh I would like to know the negative implications that this would have on Google indexing or otherwise, as I fundamentally disagree with this suggestion and believe that in a siutation like this a 302 redirect would be more appropriate.

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• How do I design a web service (microsoft) that can be consumed by multiple end points?

  - by Ben McCormack

  My company is planning to implement a solution in multiple applications that will help to validate mailing addresses at the point of data entry. We're using UPS's Extended Address Validation (XAV) web service API to validate the addresses. Our current plan is to build a .NET web service that can be used to communicate between our applications and the UPS API. We have applications in VB6, classic ASP, and .NET 2.0, so we'd like to implement a solution that can be easily consumed by each of these programming environments. What are our (Microsoft) options for designing a web service that can be consumed by multiple clients? In particular, is there a way to design a single web service that can respond with JSON (in case we want to validate our web page using javascript) in addition to XML? I'm new to designing web services and want to make sure we consider all of our options. I've heard terms like asmx, WCF, OData, etc., but I don't know which frameworks will support what we're trying to do and where to start.

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• Android ROM Development. What does it take?

  - by Priyank

  Hi. I have been developing android apps out of hobby and fun. I want to get more serious about android development. One particular thing that I am very keen on doing (or atleast trying my hand at) is andoroid ROM development for specific handsets. Like, maybe outdated HTC Touch. (Elf/Elfin). I am at a loss to understand, what does it take to get started in right direction and what does it entails? I would really appreciate your help if you could point me to some resources which would highlight ROM Development for Android specifically. (Fundamentals of ROM development irrespective of OS would help too). Cheers

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• Sending out 20,000+ emails with asp.net

  - by Kyle

  I am writing an application that will need to send a massive amount of emails to our students who will be selected from our database (each email will be personalized to the extent that will include their name, course of study etc...so needs to be sent one at a time). I could do this looping over an SmtpClient, but I'm afraid that with the numbers I'm trying to send, I'll ultimately run into timeout issues or my thread being killed because of lack of machine resources. At this point I'm just looking for suggestions of a better way to handle this, or if looping over SmtpClient is an ok solution, how I should go about handling it to prevent what I posted above. Would a web service be a better alternative? Please advise, TIA

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• Solving linear system over integers with numpy

  - by A. R. S.

  I'm trying to solve an overdetermined linear system of equations with numpy. Currently, I'm doing something like this (as a simple example): a = np.array([[1,0], [0,1], [-1,1]]) b = np.array([1,1,0]) print np.linalg.lstsq(a,b)[0] [ 1. 1.] This works, but uses floats. Is there any way to solve the system over integers only? I've tried something along the lines of print map(int, np.linalg.lstsq(a,b)[0]) [0, 1] in order to convert the solution to an array of ints, expecting [1, 1], but clearly I'm missing something. Could anyone point me in the right direction?

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