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  • Does C# support inner classes? [closed]

    - by Amy
    Possible Duplicates: Using Inner classes in C# Inner classes in C# Class declared inside of another class in C# Does C# support the concept of inner classes? If so, what are the benefits? Could someone please explain this to me?

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  • C: do {...} while(0)?

    - by igul222
    I'm working on some C code filled with macros like this: #define SAFE_FREE(x) do { if ((x) != NULL) {free(x); x=NULL;} } while(0) Can anyone explain what this macro does, and why do {} while(0) is needed? Wouldn't that just execute the code once?

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  • street light and shadow in opengl ?

    - by Abhilash M
    To make a scene street illuminated, i tried, point source light, used glMaterial and used ambient light...... I get a scene fully illuminated, not exactly the way like street light, can anyone share resources or explain how exactly i can achieve this?? I went through many light resources in net, could not properly understand....

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  • What does this eclipse symbol mean?

    - by ikky
    Hi, i can't seem to find this symbol in the Eclipse documentation, and i'm no expert in using Eclipse. Can anyone explain to me what it means? The symbol: It's the arrow that confuses me. Can it be a shared resource? Thanks in advance!

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  • Brightness too dark or too bright

    - by YatharthROCK
    Basically, below a seemingly-arbitrary threshold (seems to be around 60%) my laptop screen is too dark to really make out much, and above that threshold it takes its maximum brightness (which is waay too bright for my eyes). This problem only occurs when I change the brightness using Windows' UI. Changing the brightness using Fn keys on my keyboard works as expected; unless the screen went into dark mode because of Windows, in which case they have no effect. This problem started occuring on my ASUS laptop very recently. My laptop has a poor battery, but I don't think that's related. What is going on? I tried resetting power plan settings, turning off adaptive brightness and restarting. I'll give any info asked for. Help required urgently...

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  • how to use drawItems() in PyQt?

    - by DSblizzard
    I have these two code fragments in program: class TGraphicsView(QGraphicsView): def __init__(self, parent = None): print("__init__") QGraphicsView.__init__(self, parent) def drawItems(self, Painter, ItemCount, Items, StyleOptions): print("drawItems") Brush = QBrush(Qt.red, Qt.SolidPattern) Painter.setBrush(Brush) Painter.drawEllipse(0, 0, 100, 100) ... Mw.gvNavigation = TGraphicsView(Mw) # Mw - main window Mw.gvNavigation.setGeometry(0, 0, Size1, Size1) Mw.gvNavigation.setScene(Mw.Scene) Mw.gvNavigation.setSceneRect(0, 0, Size2, Size2) Mw.gvNavigation.show() _init_ works, Mw.gvNavigation is displayed and there are Mw.Scene items in it, but drawItems() isn't called. Please explain, what I'm doing wrong.

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  • why do i see THROW in a C library

    - by Bhagya
    When I do: less /usr/include/stdio.h (which is only a C library - nothing to do with C++) I see __THROW after quite a few function declarations. Also, comments above a few functions say that 'This function is a possible cancellation point and therefore not marked with __THROW' What is all this for? THROW is meant to be for exception handling.. but as far as I know, C doesn't provide any support for it... Plz explain.

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  • How to fill HTTP forms through java?

    - by Yatendra Goel
    I want to fill a text field of a HTTP form through java and then want to click on the submit button through java so as to get the page source of the document returned after submitting the form. I can do this by sending HTTP request directly but I don't to this in this way. Very Urgent. You can also paste the code or demo code to explain in a better way.

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  • PowerShell question

    - by Ybbest
    Hey I got the following ps for retrieving the site template from SharePoint,but I do not quite undersantd what does the second half of the script( | ? {$_.IsHidden -eq $false }) does? Can someone explain this to me please as I am fairly new to PS. Get-SPWebTemplate | ? {$_.IsHidden -eq $false }

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  • Web application design with distributed servers

    - by Bonn
    I want to build a web application/server with this structure: main-server sub-server transaction-server (create, update, delete) view-server (view, search) authentication-server documents-server reporting-server library-server e-learning-server The main-server acts as host server for sub-server. I can add many sub-servers and connect it to main-server (via plug-play interface maybe), then it can begin querying data from another sub-servers (which has been connected to the main-server). The sub-servers can be anywhere as long as connected to internet. The main-server can manage all sub-servers which are connected to it (query data, setting permission between sub-servers, etc). The purpose is simple, the web application will be huge as the company grows, so I want to distribute it into small connected plug-able servers. My question is, does the structure above already have a standardized method? or are there any different views? what are the technologies needed? I need a lot of researches before the execution plan begin. thanks a lot.

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  • Working with arrays passed byref

    - by Jason
    I would like for someone to explain this to me: function myFunction(array){ array = $.grep(array, function(n,i){return n > 1 }); } var mainArray = [1,2,3]; myFunction(mainArray); document.write(mainArray) // 1,2,3, but i'm expecting 2,3 but if i do something like array[3] = 4; in place of the $.grep line, i get 1,2,3,4. Shouldn't mainArray become the new array created by $.grep?

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  • Adding a Windows Server 2012 Essentials server to an existing domain, without migrating the AD

    - by TiernanO
    I have an existing Active Directory in house, a mix between a Win2K8R2 and Win2K3 domain, and i would like to test out Windows Server 2012 Essentials BETA on the network. When walking though the install, it gives me the option of a new domain, or migrating from an existing domain. when clicking existing, it tells me i can only have one SBS server running on a domain at a time... So, i dont have any existing SBS servers in house (both are full standard or enterprise editions) but i do plan on keeping at least one of these extra servers running... So, how do i get a 2012 Essentials server to join a domain, and not migrate the existing domain? or if i do migrate, can i still get one of the other boxes to act as secondary controllers?

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  • CPU sometimes hangs at 50% maximum on Windows 8

    - by Martin.
    Recently I installed Windows 8 on my HP ProBook 6450b and it appears I've got problems when using more than one program at once. Sometimes, when I run multiple programs at once, CPU hangs at 49% and never goes up. I suspect it has something to do with CPU throttling, because sometimes it just goes over 49%. I've got my notebook connected to charger and my plan is set to "Active cooling". The weird thing is that this happens only occasionally. I found nothing in my BIOS that could change this kind of things.

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  • lr parsing table

    - by flufferok
    Could any1 explain how can i transform ll(1) parsing table to lr(1) parsing table? Or are there any tables already for lr1 mathematical parsing(+,-,/,*,^)?

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  • Python begineer confused by a piece of code

    - by Protean
    I understand the gist of the code, that it forms permutations; however, I was wondering if someone could explain exactly what is going on in the return statement. def perm(l): sz = len(l) print (l) if sz <= 1: print ('sz <= 1') return [l] return [p[:i]+[l[0]]+p[i:] for i in range(sz) for p in perm(l[1:])]

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