46 Discussion / Question Topics
Remove Filter  | Hi, i have seen a lot of ppl say things like, 'this piece of code is more efficient than the other', 'this gives better performance' or 'more efficient memory wise' etc.. but i fail to understand that how in a normal coding scenario can i find out the efficiency of …  |
| | We have a small team of 5 software developers and we are handling products A & B. Last month we were also handed over products C & D from another team which moved to doing something else. Suddenly we have double the work and same number of people. Though we … |
| | I have a some libraries which have a lot of common classes but the namespaces are different. Most of the code I was writing could be easily reused by classes in both libraries so after some reading I tried a technique of using the templates to pass namespace. As you … |
| | I have been reading the 'inside the c++ object model' by Lippman and one of the sections has me a little confused. It is the section where the author explains how virtual tables are created and virtual pointers assigned, in the scenario of multilevel, single inheritance. If anyone here has … |
| | Have been reading about the facebook commenting API for a few days now. Sites like Techcrunch have gone ahead and implemented the feature. I tried imagining if it will make sense for a forum like Daniweb to enable facebook commenting ? To me it seemed that it will not make …  |
| | Hi, I'm using istream_iterator to read input from standard i/p and writing it to standard o/p using ostream_iterator. I expected it to print the input to the console when I hit enter and then exit but it loops for next input after printing and so on. [code=c++] #include <iostream> #include … |
| | Hi, I have always been a little confused about inline/non-inline virtual functions and got a little more confused when I read this in a book: According to the book the code below will fail to link on many systems(it gave no errors on mine, g++ 4.4.1). The explanation is "Even …  |
| | Hi Guys, I'm trying to evaluate the possibility of using Ontology for one of the tasks in an exercise but can't seem to get my head around its usage. I've read quite a few tutorials and the OWL documentation. I think I can create an ontology with some effort but … |
| | I'm sorry if i'm posting this again but i just can't find the search forum button. When I tried logging into daniweb it kept redirecting me to the login page everytime, even though the username and password is same and actually filled in by the browser. Finally I chose the …  |
| | Hi, We have created an ER diagram for the below mentioned scenario. This is the first time we're doing this, some comments would be useful Problem statement: A website which allows students to sign-in and register for different courses. Students can then create question sets for registered courses. Each question … |
| | [code=c++] int main() { int i=10; char arr[i]; } [/code] I was expecting an error but it is compiling without any issues. I'm assuming the g++ compiler is doing something but not sure how to disable that. This is my compiler info [quote] Using built-in specs. Target: i486-linux-gnu Configured with: … |
| | [code=c++] class A: public B { C* p1; C* p2; } [/code] What would be a correct assignment operator for class A? We have to ensure that we do not leave any object in an inconsistent state due to any exceptions or create any dangling references or memory leaks.  |
| | Hi, I'm writing my first RMI application, it's an auction system. At the end of the auction period for a particular item the server sends a 'callback' to the winning client telling him that he's won. It works fine till here, but after that i get this exception. It shows … |
| | Yesterday i saw the Microsoft’s table PC technology in one of the tech shows on TV and it kind of left me speechless.. Has anyone else happened to see it? It was just amazing, i know its going to cost a fortune but it definitely gives a picture of what … |
| | hey guys, I have a fixed length .txt file. Values in the file correspond to columns in a db table. ex file row is something like: [B]India 3455 78787 89898[/B] table has columns something like: [B]column_name length startPosn EndPosn[/B] country 6 1 6 ID 6 7 13 so you see …  |
| | Hi Daniites, I've been thinking long of joining some open source project but i just don't know how i can do that. If someone here has worked on one can you give me some insights? I need to know how these projects work, how the work is distributed, how is … |
| | Hi Guys, I'm trying to create my own DBMS. For now i want to create a simple one where i can 'create' tables, 'insert' data and do a 'select' for all values(no where condition as of now). Very basic features. This is the first design/pseudo code that i have come …  |
| | This code here is giving segmentation fault. Any clues why? also any general tips for writing good multi-threaded code are welcome. [code=c++] #include <windows.h> #include <process.h> #include <iostream> using namespace std; unsigned __stdcall Display(void* p) { Sleep(500); cout << "Display" << endl; cout << *((int*)p) << endl; return 0; } …  |
| | Hi guys.. I'm facing a problem in my project. Basically its a small project for a retail store inbound section. The goods come in cartons and the user enters the carton ID in the UI to accept the carton. In the backend the carton details get updated in the table … |
| | i posted this in geeks lounge, got no response, so posting it here... Hi Guys... Anyone can share which are the top universities in UK for a Masters in Software Engineering and related fields? And how are they, compared to the top Univs in US and Canada? |
| | Hi Guys... Anyone can share which are the top universities in UK for a Masters in Software Engineering and related fields? And how are they, compared to the top Univs in US and Canada? |
| | Hi, The same code as my previous post, but because of this list thing, i'm not able to run specific commands for different options. Here i have 2 options under the 'Names' Menu, 'rajat','prasun', now when the user selects either of them i should be able to know which one … |
| | Hi, Below is my test code, i have a list of names in a file, i read the names and i have to insert them as menu options in the menubar. Since its a dynamic menu and people can add new menu's it has to be read from a file … |
| | Hi Guys, i just wrote a program to print a sentence backwards using recursion. But i'm not too happy about it, if someone can give me a more optimized solution i'll be glad. You have to use std::string class. input: where the streets have no name output: name no have … |
| | Hi, has anyone used the mdb debugger in solaris? I need to debug a core file on a client Machine which has neither dbx nor gdb. i could only find mdb, unfortunately i've never used mdb and it's kind of tricky. i dont know if people still use it these … |
| | This is my code for a chat client. I create a simple UI with a text box for viewing the chat and an entry widget to write messages. There's a button called 'Connect', when i click this i start a new thread which does the connection and keeps receiving messages … |
| | Hi Guys.. I need to know how to debug the 'main' of an exe using dbx. i cant put a 'sleep' and recompile it. For example in windows using visual .Net i can do something like >devenv /debugexe xyz.exe This will bring up the exe in debugmode. i need the … |
| | Hi Guys... i'm sure the topic has given you a braod hint and if u've still been brave enough to open this just help me out... i have a dual boot system, windows XP and Ubuntu 7.1. i need to change this setup to a virtual machine setup, host xp … |
| | [code=c++] #include <iostream> using namespace std; class Lock { friend class First; private: Lock() { } }; class First : virtual public Lock { public: void function() { cout << "function1" << endl; } }; class Second: public First { public: void function2() { cout << "function2" << endl; } … |
| | Hi, I have 2 modules, grepforapp.py and myApp.py. Basically i'm trying to make a 'search' utility. myApp makes the UI with one textbox for taking input, start button and a list box which displays the file names where the pattern was found. grepforApp walks through the dir tree and searches … |
| | Hi Guys.. Can someone explain to me what's the difference between sending any data over a socket vs sending an http request? i mean sending an http request would also be happening over a TCP socket, am i right? so basically it's as simple as sending data from client socket …  |
| | Hi, When i search for a pattern in a file how do i get the line and line#? basically i want to replicate the 'grep' command functionality. Now i can easily say whether the pattern exists or not using re.search funtion but i'm not able to print that particular line … |
| | Hi, We're using curses library functions to draw windows in our project. For showing an error the error message is enclosed within '-'s , it seems to be working fine till we ported to a new linux machine where its displaying some garbage instead of the '-' . To be …  |
| | Hi Guys... i'm not so good at oracle, sql and related stuff.. but i do need to write some simple query's from time to time and i do need to understand that which all tables get updated by a particular transaction. I can do that by going through the code, … |
| | Hi.. i have installed Ubuntu 7.10 on my laptop. it also has windowXP installed. i'm able to access wireless network on windows but on ubuntu its not detecting it. when i connect it through a wire i'm able to access. i read on the net, seems my WAN card which … |
| | Hi.. whats the best way to initialize a char* ? i tried using char* p = ""; and it gives segmentation fault at times. not sure how to initialize it. this is the function where i'm using it. screenReturnValue variable is not getting initialised properly everytime, when i call this … |
| | Hi Guys.. is there someway i can change my screen name from 'chandra.rajat' to something else ??... -chandra  |
| | [quote]Reposting from another forum as i didnt get many suggestions there[/quote] Hi Guys, In my project the user will enter the name of the organization and it's floor map has to be displayed. the maps have to be made by us and need not be complicated at all. what i … |
| | hi, I have a XML in a String coming from an external input. The problem is that this string is getting some junk characters appended to in the last. I need to find the lenght of the string only till the correct part. once i get this lenght i can … |
| | Hi Guys, In my project the user will enter the name of the organization and it's floor map has to be displayed. the maps have to be made by us and need not be complicated at all. what i want to know is that what technologies can i use to … |
| | hey guys ... i was wondering shouldn't we awarded some kind of privileges as we move up the rank?.. for example when a light poster becomes a junior poster(like me :), n i'm so proud if myself) say he can be given the privilege of getting one query answered by …  |
| | I have a vector of a structure.. say [QUOTE]struct employee { string name; int age; int empId; }; and a vector of this structure RWTValOrderedVector<employee> vec;[/QUOTE] suppose this vector has 4 entries. Now if i want to find in this vector for employee information of a specific employeeid, how do …  |
| | Guys i have a design where in i have 6 classes called 1)HttpServer 2)ParserClass 3)InputInterface 4)Cartonization 5)OutputInterface and then i have a 6)Manager class. HttpServer gets the request xml as a string in request body. ParserClass parses the string xml and stores value in variables. inputInterface inserts the values in … |
| | hey guys ... Are there any people out here who've done their masters in comp science? .. need to know whats the best time to go for a masters? how easy or tough it is?? and most importantly how useful? i have a bachelor of engineering in electronics but i'm … |
| | Hi, i'm a c++ programmer and for the first time i had to do some xml parsing in my code. i have been able to do that succesfully using the xercis library, fetching the value of each tag from an input XML file, however my concern is that what if … |
| | hi... i'm a c++ developer n mainly looking to enhance my knowledge through this forum .... -rajat  |
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