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  • Can I pass a pointer to a superclass, but create a copy of the child?

    - by Alex
    I have a function that takes a pointer to a superclass and performs operations on it. However, at some point, the function must make a deep copy of the inputted object. Is there any way I can perform such a copy? It occurred to me to make the function a template function and simply have the user pass the type, but I hold out hope that C++ offers a more elegant solution.

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  • How to free static member variable in C++?

    - by user299831
    Can anybody explain how to free memory of a static member Variable? In my understanding it can only be freed if all the instances of the class are destroyed. I am a little bit helpless at this point... Some Code to explain it: class ball { private: static SDL_Surface *ball_image; }; //FIXME: how to free static Variable? SDL_Surface* ball::ball_image = SDL_LoadBMP("ball.bmp");

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  • The Stackoverflow alert box, How is it done?

    - by Scott
    Question says it all. Can someone point me to an example of how they do the alerts at the top when a new message arrives or someone posts to my answers or I just have a notification.. Thanks. P.s. I would love a JQUERY solution, but can work with just a js solution.

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  • How do you debug MySQL stored procedures?

    - by Cory House
    My current process for debugging stored procedures is very simple. I create a table called "debug" where I insert variable values from the stored procedure as it runs. This allows me to see the value of any variable at a given point in the script, but is this is there a better way to debug MySQL stored procedures?

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  • C# underlying types of enums

    - by Marlon
    What is the point of having enum SomeEnum : byte // <---- { SomeValue = 0x01, ... } when you have to make a cast just to assign it to the same type of variable as the enums underlying type? byte b = (byte)SomeEnum.SomeValue;

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  • Using macro to check null values

    - by poliron
    My C code contains many functions with pointers to different structs as parameters which shouldn't be NULL pointers. To make my code more readable, I decided to replace this code: if(arg1==NULL || arg2==NULL || arg3==NULL...) { return SOME_ERROR; } With that macro: NULL_CHECK(arg1,arg2,...) How should I write it, if the number of args is unknown and they can point to different structs?(I work in C99)

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  • Component Level Documentation

    - by Jason Summers
    I'm trying to make good on a promise I've made to provide a decent set of documentation for a C# component that I've written. I've done some googling and found templates for software design at high and low level. The problem is that all of the templates seem to be geared towards a complete system design as opposed to individual components and are consequently overkill. Can anyone please point me in the direction of a template geared towards component documentation? Many thanks

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  • display several items in one row of a listview in android

    - by Sephy
    I don't now if this title is very clear, but I would like to understand how this is possible : And how we can have 2 elements on the same row of the listview, and handle different clicks, as the listview deals with handling the click on a child. Thanks for anyone who could point me in the right direction.

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  • Find interior angle of polygon in 3D

    - by Himadri
    I have some points in 3D but all points are in single plane. It can be any plane. Now I wanted to know the interior angle between any three consecutive points. How can I do so? For example, I have three points (1,0,0),(0,0,0) and (-1,1,0) then I want the answer as 135 degree. But If I have the third point is (-1,-1,0) then the answer should be 225 degree.

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  • A tool for finding duplicate code in PHP

    - by Toby
    Are there any tools available that can scan multiple .php files and report back duplicated lines/chunks of code? It doesn't have to be really smart but basically give me a starting point for manual scans to improve the codebase of some of my apps.

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  • Have any facility to use OCR through sharepoint?

    - by govind1987
    I want to use use share point to access the OCR engine? I downloaded the tessnet2 .dll and Demo application with database but this app. not working properly and cant generate the text which I want please help me any who finding errors in me and say show effert. friends I am just stating with .net.

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  • What is the future of C++?

    - by George Edison
    Given the rise in popularity of C# and others, (which you can point out in the comments) what future does C++ have? Consider that most OS code is a mix of Asm/C/C++ and a lot of FOSS still use it. Also consider the upcoming C++0x standard that brings a few changes to the mix.

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  • Getting the System tick count with basic C++?

    - by Donal Rafferty
    I essentially want to reconstruct the getTickCount() windows function so I can use it in basic C++ without any non standard libraries or even the STL. (So it complies with the libraries supplied with the Android NDK) I have looked at clock() localtime time But I'm still unsure whether it is possible to replicate the getTickCount windows function with the time library. Can anyone point me in the right direction as to how to do this or even if its possible?

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  • Do compiled PHP scripts exist?

    - by dabito
    Hi, I am wondering if anyone has used or read about PHP scripts compiled as a .so extension for Apache... Thing is I think I remember reading about it somewhere but dont know if such a thing exists. This looks promising, but incomplete and abandoned: http://phpcompiler.org/ Im interested because i think it could improve performance... Perhaps someone could point out a framework or apache extension that does this. Thanks!!

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  • MVC alternatives: examples of MVA & AVC?

    - by Phillip Oldham
    I'm interested in learning about the alternative patterns to Model-View-Controller, specifically the Model-View-Adapter and Application-View-Controller patterns. Google results tend to be either a high-level overview or Java-based. Can anyone either provide, or point me to, an example of these patterns in either PHP, Python or JavaScript?

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  • RichTextBox specific colors per few characters / lines C#

    - by Xavier
    I have richTextBox1, and here is the contents: line one from my textbox is this, and i want this to be normal, arial, 8 point non-bold font line two, i want everything after the | to be bolded... | this is bold line three: everything in brackets i (want) to be the color (Red) line 4 is "this line is going to be /slanted/ or with italics and so on, basically if I know how to do what I mentioned above, I'll know everything I need to know to complete my project. Code examples would be very very much appreciated! :)

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  • How to start editing pidgin source code ?

    - by Sakti
    I downloaded pidgin source code and i don't know where to start from .. Can any one pls ;) point the right way to understand that program ? and also tell how to compile it on windows system .. it has manuals to compile on a Linux system but not windows .

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