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  • What's a good approach to adding debug code to your application when you want more info about what's going wrong?

    - by Andrei
    When our application doesn't work the way we expect it to (e.g. throws exceptions etc.), I usually insert a lot of debug code at certain points in the application in order to get a better overview of what exactly is going on, what the values for certain objects are, to better trace where this error is triggered from. Then I send a new installer to the user(s) that are having the problem and if the problem is triggered again I look at the logs and see what they say. But I don't want all this debug code to be in the production code, since this would create some really big debug files with information that is not always relevant. The other problem is that our code base changes, and the next time, the same debug code might have to go in different parts of the application. Questions Is there a way to merge this debug code within the production code only when needed and have it appear at the correct points within the application? Can it be done with a version control system like git so that all would be needed is a git merge? P.S. The application I'm talking about now is .NET, written in C#.

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  • Why does XFBML work everywhere but in Chrome?

    - by Andrei
    I try to add simple Like button to my Facebook Canvas app (iframe). The button (and all other XFBML elements) works in Safari, Firefox, Opera, but in Google Chrome. How can I find the problem? EDIT1: This is ERB-layout in my Rails app <html xmlns:fb='http://www.facebook.com/2008/fbml' xmlns='http://www.w3.org/1999/xhtml'> ... <body> ... <div id="fb-root"></div> <script> window.fbAsyncInit = function() { FB.init({ appId: '<%= @app_id %>', status: true, cookie: true, xfbml: true }); FB.XFBML.parse(); }; (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js#appId=<%=@app_id%>&amp;amp;xfbml=1'; document.getElementById('fb-root').appendChild(e); }()); FB.XFBML.parse(); </script> <fb:like></fb:like> ... JS error message in Chrome inspector: Uncaught ReferenceError: FB is not defined (anonymous function) Uncaught TypeError: Cannot call method 'appendChild' of null window (anonymous function) Probably similar to http://forum.developers.facebook.net/viewtopic.php?id=84684

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  • What language should I use for making a cross platform library?

    - by Andrei
    I want to build a SyncML parsing library (no UI) which should be able to build up messages based on information provided by the host application, fed in by the library's methods. Also, the library should to be able to do callbacks to methods in the host application. I want to be able to compile this and have it available on as many platforms as possible: Windows, Windows Phone 7 OS, OSX, iOS, Linux, Android, BlackBerry. Basically as many platforms as possible. The priority is to have this available on mobile devices. Questions: What setup should I use? (programming languages, compilers, IDE etc.) How would I compile this library for these different platforms and how would I connect to it? Any other info? e.g. articles that cover the subject of cross-platform development? I haven't done this sort of a cross-platform project before, so any available information to put me in the right direction would be welcomed. Myself, I have a background in C#/.NET and Objective-C.

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  • Per-Thread Visibility PHPBB

    - by Andrei Krotkov
    I'm trying to implement a registration system for a board I'm running, and I want a forum where every thread is invisible to everyone but the person who started it and the moderator staff. I want the staff to be able to post and for the person registering to respond, but I haven't been able to find a per-post visibility solution. Are there any mods that perform this task, or is there a hidden setting in the software somewhere?

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  • Why do some large companies use a different domain for sending emails?

    - by Andrei Rinea
    I've received notifications and newsletters from Microsoft and Facebook in the past and noticed that both emails came not from an address such as [email protected] or [email protected]. Not event [email protected] but both had different domains such as : [email protected] and [email protected] Why is this? Any particular advantage in doing so? Other than not polluting the employees email software, I can't see.

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  • ALT+SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick

    - by Andrei
    I'm trying ALT+SysRq+REISUB to see how it would be used to restart my system safely in case of emergency. However, I find that ALT+SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick. All other SysRq combinations appear to work correctly (i.e. ALT+SysRq+REISU). cat /proc/sys/kernel/sysrq returns 0. But I'm not sure it's relevant because ALT+SysRq certainly works. What can I do to have "B" actually restart the system? Thanks!

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  • Life and Career guidance

    - by Andrei TheGiant Haxtor
    Hello programmers. I have a current dilemma I'm pondering over. I will be graduating from high school with ~60 credits worth of community college work (pre-engineering courses), and I am wondering what would experienced programmers suggest I do with my time since I have all of the bull courses out of the way. Should I start taking computer science/engineering courses or should I take some other courses that interest me?(psych, math) The reason I am asking this is, well , I like doing a lot of self studying, especially relating to software and tech. I don't like to have the pressure of hard classes on me, so I could make up for the time lost doing the CC courses and dive deep in programming and books. I've started getting into programming recently unfortunately, since I didn't have much time b/c of my course load. Right now I am doing Java and messing around with android. I would like to get involved in web&mobile development, operating systems, and finance software. If any of you experienced people could please give me some guidance and words of wisdom, I would greatly appreciated. Sorry that this isn't necessarily related to programming. All the best.

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  • Unity Bar auto-hide behaviour and application icons placement

    - by Andrei
    The first issue: It seems that sometimes when I hover to the left edge of the screen the Unity Bar will not stay on top of other windows even if I continue to hover the cursor above it, at other times it will stay on top. Is this a normal behaviour? Or am I affected by some bug / inconsistency? If it's normal, what's the logic behind it? The second issue: Application icons for running applications do not maintain their position in the Unity Bar but instead move around according to some weird rules (if any?) that I can't understand. Is this to be expected, or is it a bug? Is there a way to force them to stop moving around? I like to see certain apps in certain positions and this bothers me.

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  • How can I start Busybox at boot time, from GRUB, or even before GRUB?

    - by Andrei
    Most Busybox questions are related to the fact that users are dropped to a Busybox shell due to some unknown issues at boot time. This must make Busybox one of the most hated pieces of software. My problem is the opposite. I want to deliberately start Busybox at boot time either from GRUB, or even before GRUB. Is this possible? How can I do it? The purpose is to execute some commands before the boot sequence is reinitiated. So basically I want to execute some commands to make some hardware available to the bootloader.

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  • SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick

    - by Andrei
    I'm trying SysRq+REISUB to see how it would be used to restart my system safely in case of emergency. However, I find that SysRq+REISUB hangs at "resetting" (without actually resetting/restarting) in Maverick. All other SysRq combinations appear to work correctly (i.e. SysRq+REISU). cat /proc/sys/kernel/sysrq returns 0. But I'm not sure it's relevant because SysRq certainly works. What can I do to have "B" actually restart the system? Thanks!

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  • time it takes to develop 4*N lines of code. Nonlinear, but how nonlinear ?

    - by Andrei
    It took me time T to develop program A, 1000 lines of code (SLOC), in certain language/area/complexity. Then how much time it will take to develop program B which is expected 4000 lines, in same area/complexity/language ? I expect it to be 4*N, right ? Any formula how T grows with SLOC ? For contractor, these estimates are important. Is there formula from software enginering books, or from people's experience ? Also, what methods exist to make the code bug-free before it hits QA ?

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  • Keyboard shortcuts get randomly reset

    - by Andrei
    I'm facing a rather weird issue in the past few days after doing a clean install of Ubuntu Oneiric (w/ gnome-shell) on my recently-bought Asus U36SD. I set up my keyboard shortcuts using System Settings Keyboard Shortcuts, and some of them get randomly reset. Most of my shortcuts include the win key (otherwise listed in the keyboard shortcuts as Mod4), but those containing only Mod4 + get reset every two-three reboots. For instance, Mod4 + T (for terminal), gets reset to the standard Ctrl + Alt + T, while Shift + Mod4 + W (for browser) doesn't (I've set up the latter with the Shift key, because it seems that Mod4 + W didn't get intercepted at all. Something similar goes for Mod4 + E for gedit, which only worked once or twice). I have no idea if this is a Ubuntu specific issue, or it's related to gnome-shell or even with my current hardware. Has this happened to any of you? If so, did you manage to fix it?

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  • What is the best Video Conference integrated solution for Us? [closed]

    - by Andrei B
    we are trying to integrate a simple Video Conferencing (open source) solution into our existing application which is written in C++ and it runs on Linux. I am currently looking at using Ekiga (formely known as GnomeMeeting) or Homer Conferencing (short: Homer). My plan is to "integrate" an existing Video Conferencing client into our existing software. Please give me recommendation on which 3rd party application or library to use to add video conferencing feature to our application. PS: Please don't close this question. I asked it on StackOverflow and it got closed, so where am I supposed to ask this question? If not here, then whats the point of asking lol.

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  • Broadcom BCM4313 wireless slow and high-latency

    - by Florin Andrei
    Ubuntu 12.10 64 bit on a Dell Latitude E6330 laptop. Wireless is pretty slow. It gets connected quick enough, but then it acts like a dialup connection. My ssh sessions over WiFi are slow and laggy. Even browsing is slow, the pages are loading like it's 1998. This does not depend on the access point, it's the same both at home and at work. Other systems work fine on these access points. I had an older Dell laptop before, different WiFi hardware, and it was much faster over the same wireless access points. Is this a known issue with this hardware? If so, any solutions?

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  • Which are the Extreme Programming "core" practices?

    - by MiKo
    Recently, I began reading about agile methodologies and XP in particular. I am a bit confused, though, about what are considered the practices involved in extreme programming. More precisely: Wikipedia reports 12 practices, which I someway believe to be the "classic" ones. Both Kent Beck and Ron Jeffries indicate 13 practices (you can find the links at the bottom of wikipedia page about "Extreme Programming Practices", I cannot post them here since I am new user of Stack Overflow), while this review of Kent Beck's "XP explained" (2nd edition) report more than 20 somewhat different practices. As a complete beginner in the topic (and basically as a complete beginner as a programmer), I would like to be enlightened on the matter. My impression is that I should look at Beck's book, since the second edition has been written after several years of XPerience, but I can find a lot less material based on that.

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  • Recommendation for advanced CMS with LDAP support

    - by Miko
    I'm developing and designing a site for a customer. I would like to give him some control over content but also allow myself control over the outputted code/graphic. Normally for simple sites, I am using toko cms (content editor), but for this site i need something more advanced with database and user sync (LDAP). Any recommendations ? Maybe a robust but productive framework?

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  • SharpGL: Can't draw all lines from List

    - by Miko Kronn
    I have: float[,] nodesN = null; //indexes: //number of node; //value index 0->x, 1->y, 2->temperature int[,] elements = null; //indexes: //indexof element (triangle) //1, 2, 3 - vertexes (from nodesN) List<Pair> edges = null; //Pair is a class containing two int values which are //indexes of nodesN And function which is supposed do all elements and edges on SharpGL.OpenGLCtrl private void openGLCtrl1_Load(object sender, EventArgs e) { gl = this.glCtrl.OpenGL; gl.ClearColor(this.BackColor.R / 255.0f, this.BackColor.G / 255.0f, this.BackColor.B / 255.0f, 1.0f); gl.Clear(OpenGL.COLOR_BUFFER_BIT | OpenGL.DEPTH_BUFFER_BIT); } float glMinX = -2f; float glMaxX = 2f; float glMinY = -2f; float glMaxY = 2f; private void openGLControl1_OpenGLDraw(object sender, PaintEventArgs e) { gl.Clear(OpenGL.COLOR_BUFFER_BIT | OpenGL.DEPTH_BUFFER_BIT); gl.LoadIdentity(); gl.Translate(0.0f, 0.0f, -6.0f); if (!draw) return; bool drawElements = false; if (drawElements) { gl.Begin(OpenGL.TRIANGLES); for (int i = 0; i < elementNo; i++) { for (int j = 0; j < 3; j++) { float x, y, t; x = nodesN[elements[i, j], 0]; y = nodesN[elements[i, j], 1]; t = nodesN[elements[i, j], 2]; gl.Color(t, 0.0f, 1.0f - t); gl.Vertex(x, y, 0.0f); } } gl.End(); } gl.Color(0f, 0f, 0f); gl.Begin(OpenGL.LINES); //for(int i=edges.Count-1; i>=0; i--) for(int i=0; i<edges.Count; i++) { float x1, y1, x2, y2; x1 = nodesN[edges[i].First, 0]; y1 = nodesN[edges[i].First, 1]; x2 = nodesN[edges[i].Second, 0]; y2 = nodesN[edges[i].Second, 1]; gl.Vertex(x1, y1, 0.0f); gl.Vertex(x2, y2, 0.0f); } gl.End(); } But it doesn't draw all the edges. If i change drawElements it draws different number of edges. Changing for(int i=0; i<edges.Count; i++) to for(int i=edges.Count-1; i>=0; i--) shows that esges are generated correctly, but they are not drawn. Images: for(int i=0; i<edges.Count; i++) drawElements=false for(int i=edges.Count-1; i>=0; i--) drawElements=false for(int i=0; i<edges.Count; i++) drawElements=true for(int i=edges.Count-1; i>=0; i--) drawElements=true What is wrong with this? How can I draw all edges?

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  • How to match this with a regex?

    - by andrei miko
    I just wanna use a regex to match something from my products file. I have them in this way "Something here","a link here","website here","date here(eg. 11/12/2012)","description1 here","**description2 here**","some other text here","here also", and so on ... I wanna match with a regex only description 2. I tried this: (?<=[0-9][0-9][0-9][0-9]).*(?=",") but it wasn't good because it was getting me description1, description2 and some quotes also. Thanks in advance.

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  • Why some pictures are are crooked aftes using my function?

    - by Miko Kronn
    struct BitmapDataAccessor { private readonly byte[] data; private readonly int[] rowStarts; public readonly int Height; public readonly int Width; public BitmapDataAccessor(byte[] data, int width, int height) { this.data = data; this.Height = height; this.Width = width; rowStarts = new int[height]; for (int y = 0; y < Height; y++) rowStarts[y] = y * width; } public byte this[int x, int y, int color] // Maybe use an enum with Red = 0, Green = 1, and Blue = 2 members? { get { return data[(rowStarts[y] + x) * 3 + color]; } set { data[(rowStarts[y] + x) * 3 + color] = value; } } public byte[] Data { get { return data; } } } public static byte[, ,] Bitmap2Byte(Bitmap obraz) { int h = obraz.Height; int w = obraz.Width; byte[, ,] wynik = new byte[w, h, 3]; BitmapData bd = obraz.LockBits(new Rectangle(0, 0, w, h), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb); int bytes = Math.Abs(bd.Stride) * h; byte[] rgbValues = new byte[bytes]; IntPtr ptr = bd.Scan0; System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes); BitmapDataAccessor bda = new BitmapDataAccessor(rgbValues, w, h); for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { wynik[j, i, 0] = bda[j, i, 2]; wynik[j, i, 1] = bda[j, i, 1]; wynik[j, i, 2] = bda[j, i, 0]; } } obraz.UnlockBits(bd); return wynik; } public static Bitmap Byte2Bitmap(byte[, ,] tablica) { if (tablica.GetLength(2) != 3) { throw new NieprawidlowyWymiarTablicyException(); } int w = tablica.GetLength(0); int h = tablica.GetLength(1); Bitmap obraz = new Bitmap(w, h, PixelFormat.Format24bppRgb); for (int i = 0; i < w; i++) { for (int j = 0; j < h; j++) { Color kol = Color.FromArgb(tablica[i, j, 0], tablica[i, j, 1], tablica[i, j, 2]); obraz.SetPixel(i, j, kol); } } return obraz; } Now, if I do: private void btnLoad_Click(object sender, EventArgs e) { if (dgOpenFile.ShowDialog() == DialogResult.OK) { try { Bitmap img = new Bitmap(dgOpenFile.FileName); byte[, ,] tab = Grafika.Bitmap2Byte(img); picture.Image = Grafika.Byte2Bitmap(tab); picture.Size = img.Size; } catch (Exception ex) { MessageBox.Show(ex.Message); } } } Most of pictures are handled correctly butsome not. Example of picture that doesn't work: It produce following result (this is only fragment of picture) : Why is that?

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  • Problem with number/type of arguments passed to an overloaded c++ constructor wrapped with swig.

    - by MiKo
    I am trying to wrap a c++ class (let's call it "Spam") written by someone else with swig to expose it to Python. After solving several problems, I am able to import the module in python, but when I try to create an object of such class I obtain the following error: foo = Spam.Spam('abc',3) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "Spam.py", line 96, in __init__ this = _Spam.new_Spam(*args) NotImplementedError: Wrong number of arguments for overloaded function 'new_Spam'. Possible C/C++ prototypes are: Spam(unsigned char *,unsigned long,bool,unsigned int,SSTree::io_action,char const *) Spam(unsigned char *,unsigned long,bool,unsigned int,SSTree::io_action) Spam(unsigned char *,unsigned long,bool,unsigned int) Spam(unsigned char *,unsigned long,bool) Spam(unsigned char *,unsigned long) Googling around, I realized that the error is probably caused by the type of the arguments and not by the number (which is quite confusing), but I still cannot identify. I suspect the problem lies in passing a string as the first argument, but have no idea on how to fix it (keep in mind that I know almost no c/c++).

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  • How to convert Bitmap to byte[,,] faster?

    - by Miko Kronn
    I wrote function: public static byte[, ,] Bitmap2Byte(Bitmap image) { int h = image.Height; int w = image.Width; byte[, ,] result= new byte[w, h, 3]; for (int i = 0; i < w; i++) { for (int j = 0; j < h; j++) { Color c= image.GetPixel(i, j); result[i, j, 0] = c.R; result[i, j, 1] = c.G; result[i, j, 2] = c.B; } } return result; } But it takes almost 6 seconds to convert 1800x1800 image. Can I do this faster?

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  • What is testable code?

    - by Michael Freidgeim
    We are improving quality of code and trying to develop more unit tests. The question that developers asked  was  "How to make code testable ?"  From http://openmymind.net/2010/8/17/Write-testable-code-even-if-you-dont-write-tests/ First and foremost, its loosely coupled, taking advantage of dependency injection (and auto-wiring), composition and interface-programming. Testable code is also readable - meaning it leverages single responsibility principle and Liskov substitution principle.A few practical suggestions are listed in http://misko.hevery.com/code-reviewers-guide/More recommendations are in http://googletesting.blogspot.com/2008/08/by-miko-hevery-so-you-decided-to.htmlIt is slightly too theoretical - " the trick is translating these abstract concepts into concrete decisions in your code."

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  • Bind9 seems to route wildcard DNS even though they are not enabled?

    - by Andrei
    For some reason bind9 seems to route wildcard DNS even though they are not defined anywhere? Accessing anyrandomstring.domain.com routes to the domain even though they are not explicitly defined anywhere? Neither is wildcard defined anywhere in the files in /var/cache/bind/ I typed sudo service bind9 reload a couple of times now. Any ideas? Update: also tried using rndc Update2: ran sudo service bind9 stop and then accessed a random subdomain and it got routed

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  • How to make MAMP PRO / XAMPP secure enough to serve as production webserver? Is it possible?

    - by Andrei
    Hi, my task is to setup a MAMP webserver for our website in the easiest way so it can be managed by my colleagues without experience in server administration. MAMP PRO is an excellent solution, but some guys don't suggest to use it for serving external requests. Could you explain why it is bad (in details if possible) and how to make it secure enough to be a full-scale and not-only-local webserver? Is there a better solution? Update There is a discussion on the MAMP website. XAMPP developers say that one can make their product secure: The default configuration is not good from a securtiy point of view and it's not secure enough for a production environment - please don't use XAMPP in such environment. Since LAMPP 0.9.5 you can make your XAMPP installation secure by calling »/opt/lampp/lampp security«. Could you comment it?

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  • moving dynamic disk from Windows to another Windows computer when original Windows is not available

    - by Andrei
    How do I mount dynamic disk on new system without access to the old OS ? I need to move Dynamic data disk from old Windows XP (Pro, SP3) system, where disk crashed, to new Windows system without having access to the old OS. On new system, Dynamic disk shows as "Dynamic - Foreign". Microfoft has instructions for moving Dynamic Disk [1]. But Microsoft assumes having access to the old system. But I do not have acess to the old system. I am struck with "Dynamic - Foreign" static of the disk on new system. Thanks WinXP Pro SP3 [1] http://technet.microsoft.com/en-us/library/cc779854(WS.10).aspx Move Disk to another computer.

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