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• Where does getopt_long store an unrecognized option?

  - by Rob Kennedy

  When getopt or getopt_long encounters an illegal option, it stores the offending option character in optopt. When the illegal option is a long option, where can I find out what the option was? And does anything meaningful get stored in optopt then? I've set opterr = 0 to suppress the automatically printed error message. I want to create my own message that I can print or log where I'd like, but I want to include the name of the unrecognized option.

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• WinCheat / WinSpy-like tool for C++ Builder exes

  - by mawg

  I just came back to C++ Builder after 5 or more years away. I seem to remember a nice tool where I could drag its pointer over the GUI of my running application and get lots of info about what was pointed at - handle, size, text, parent, children, etc IIRC, if the exe include debug info I could also get the actual variable name as used in the source. Does anyone know what program I am talking about? Thanks

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• my robots.txt file in web application

  - by Zerotoinfinite

  Hi, I am using asp.net with C#. To increase the searchibility of my site in google, I have searched & found out that I can do it by using my robots.txt , but I really don't have any idea how to create it and where can I place my tag like 'asp.net, C#' in my txt file. Also, the necessary steps to to include it in my application. Please help. Thanks in advance

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• How to use enumeration types in C++? Apply within example.

  - by Sagistic

  I do not understand how to use enumeration types. I understand what they are, but I don't quite get their purpose. I have made a program that inputs three sides of a triangle and outputs whether or not they are isosceles, scalene, or equilateral. I'm suppose to incorporate the enumeration type somewhere, but don't get where and how to use them. Any help would be appreciated. // h8p466x1.cpp : Defines the entry point for the console application. // include "stdafx.h" int _tmain(int argc, _TCHAR* argv[]) { return 0; } include using namespace std; enum triangleType {scalene, isosceles, equilateral, noTriangle}; void triangleShape(double x, double y, double z); int main() { double x, y, z; cout << "Please enter the three sides of a triangle:" << endl; cout << "Enter side 1: "; cin >> x; cout << endl; cout << "Enter side 2: "; cin >> y; cout << endl; cout << "Enter side 3: "; cin >> z; cout << endl; triangleShape(x, y, z); return 0; } void triangleShape(double x, double y, double z) { if (((x+y) z) && ((x+z) y) && ((y+z) x)) { cout << "You have a triangle!" << endl; if (x == y && y == z) cout << "Your triangle is an equilateral" << endl; else if (x == y || x == z || y == z) cout << "Your triangle is an isosceles" << endl; else cout << "Your triangle is a scalene" << endl; } else if ((x+y) <= z || ((x+z) <= y) || ((y+z) <= x)) cout << "You do not have a triangle." << endl; }

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• Why is there no circle or ellipse primitive in openGL?

  - by Ram Bhat

  Hey guys. Circles are one of the basics geometric entities. Yet there is no primitives defined in openGl for this like lines or polygons. Why so? Its a little annoying to include custom headers for this all the time! Any specific reason to omit it?

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• view parents' class members in netbeans navigator?

  - by fayer

  in the navigator i can only see the current class' members. is there a way to include the parents' members. cause it is very useful when working with a framework, then you don't have to look for them in the documentation. i think this is available in eclipse but not netbeans.

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• Specializing function template for both std::string and char*

  - by sad_man

  As the title says I want to specialize a function template for both string and char pointer, so far I did this but I can not figure out passing the string parameters by reference. #include <iostream> #include <string> template<typename T> void xxx(T param) { std::cout << "General : "<< sizeof(T) << std::endl; } template<> void xxx<char*>(char* param) { std::cout << "Char ptr: "<< strlen(param) << std::endl; } template<> void xxx<const char* >(const char* param) { std::cout << "Const Char ptr : "<< strlen(param)<< std::endl; } template<> void xxx<const std::string & >(const std::string & param) { std::cout << "Const String : "<< param.size()<< std::endl; } template<> void xxx<std::string >(std::string param) { std::cout << "String : "<< param.size()<< std::endl; } int main() { xxx("word"); std::string aword("word"); xxx(aword); std::string const cword("const word"); xxx(cword); } Also template<> void xxx<const std::string & >(const std::string & param) thing just does not working. If I rearranged the opriginal template to accept parameters as T& then the char * is required to be char * & which is not good for static text in code. Please help !

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• Why is caching such an issue in .net 3.5?

  - by user279521

  Has anyone else having an issue with browser caching when using .net? I am using VS 2008 and IE8. And I include all the recommended code to ensure that there is no caching, still 20% of the time, I get cached values. This was never an issue with classic asp. Any ideas?

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• What do you consider a good API Documentation?

  - by Daniel

  I have always liked the documentation on Java APIs, generally speaking, but I know some people consider them lacking. So I'm wondering, what do you consider a good example of API documentation? Please, include a link or an actual example in any answer. I want to have references that I (and others, of course) can use to improve our own documents.

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• How to fix this Makefile

  - by Phenom

  Instead of executable code all it does is create files that don't do anything, even if the files are made executable. TARGETS = load list show add delete btree all: $(TARGETS) %: %.cpp g++ $< -g -o $@ -MM -MF [email protected] sed "s/$@\.o:/$@:/" [email protected] > [email protected] -@rm [email protected] DEPS=$(TARGETS:%=%.d) -include $(DEPS)

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• On SQL Server 2008, how to find out when was any database offline/online ?

  - by niteshg

  I have to include one report in my application showing offline/online activity of few databases on SQL Server 2008. Could you please suggest how can I collect teh same information from sql server?

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• visual c++:linking graphviz in vc++

  - by avijit

  i want to link graphviz as a library with vc++. how should i do that? i already give path of lib and include than also it is not working.

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• Is there any way to use VC++ 2010 without including stdafx.h?

  - by Daziplqa

  Hi all, I've successfully installed M$ VC2010 and start writing simple programs using it. I am very annoyed from the #include<stdafx.h>, So is there any way to compile and run programs without it???

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• cstdio,cstring,cmath ... recommended in c++?

  - by ajay

  Hi, Is it recommended to use cstdio,cstring,cmath in c++? I was writing a program that needed pow , strlen and sprintf ... for that the only way I could do it was to include these 3 headers. Is there a better C++ way to do it? Thanks

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• Zend_Registry - Do you need getInstance() ?

  - by Jesse

  Hey I'm wondering when accessing Zend_Registry in an application if you need to include getInstance() and if so, why? for example Zend_Registry::getInstance()-get('db'); vs. Zend_Registry::get('db'); they both seem to work with the later being less verbose. I vaguely understand that Zend_Registry is a singleton, which I think means there can only be one instance of it? so why would you need getInstance()?

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• acts_as_tree and to_json or from_json

  - by Sohan

  Hello: Does anyone have a solution to convert an acts_as_tree model to json that includes all its nodes? I trued using :include=:children, but that only goes down to one single level. Any idea how to iterate the whole tree?

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• Separating a group of functions into an includable file in C?

  - by zebra

  I know this is common in most languages, and maybe in C, as well. Can C handle separating several functions out to a separate file and having them be included? The functions will rely on other include files, as well. I want the code to retain all functionality, but the code will be reused in several C scripts, and if I change it once I do not wish to have to go through every script and change it there, too.

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• Can a trait state if a C++ class has a default constructor?

  - by Vicente Botet Escriba

  Traits classes can be defined to check if a C++ class has a member variable, function or a type (see here). Curiously, the ConceptTraits do not include traits to check if a C++ class defines a default constructor or given constructor? Can traits be used to check the constructor presence? If yes, how? If not, why it is not possible?

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• Calling to_xml on an Array of ROXML objects results in an empty collection

  - by findchris

  Hi there. I have a ROXML object that looks like: class Activity include ROXML xml_accessor :id end If I have an array of these objects and call .to_xml on the array, I receive an empty xml collection: "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<activities type=\"array\">\n</activities>\n" Any idea why or how to fix this? I'm running Rails 2.3.5 with the newest version of ROXML. Thanks

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• Why does this generate a segmentation fault?

  - by avd

  #include<stdio.h> void foo(int **arr) { arr[1][1]++; } main() { int arr[20][20]; printf("%d\n",arr[1][1]); foo((int**)arr); printf("%d\n",arr[1][1]); }

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• Is that possible to have images, CSS and scripts in a Zend Framework module ?

  - by Matthieu

  In my Zend Framework modules, I have views that require specific scripts, CSS and images. Is that possible to include them in the module in a way that I don't have to copy them in each project that uses the module ? (because the "public/" folder is not part of the module, but specific to each application) If not, how can I do ? Thanks !

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• Source code repository portal

  - by gmoorevt

  I am looking for a "portal" for wrapping our large Subversion repositories similar to GitHub. Does anyone know of any options? Features we are looking for are; home page for projects that include wiki bug tracking etc. This would be for an internal deployment.

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• How do I make a custom ActionLink?

  - by John

  I need to include an image within the <a> tag of an ActionLink. What is the best way to do this? The final rendered link should look like this, <a href="/Home/Test"><img src="test.jpg" />Test</a>

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• Handling macro redefinition without modifying .h files ... C / C++ language

  - by user310119

  Background: Let assume that I have two header files a.h and b.h. a.h contains: #define VAR 1 b.h contains: #define VAR 2 Note: The name of both of the macro is same. Let say I have some file myFile.c which includes both of the header files i.e. a.h and b.h. When I try to access VAR, I get a redefinition error of VAR. In order to resolve this problem, I inserted #ifndef VAR statement in both a.h and b.h files to prevent this error. a.h file becomes #ifndef VAR #define VAR 1 #endif b.h file becomes #ifndef VAR #define VAR 2 #endif Note: The header file can contain multiple macros, not just one macro. Problem: Let's assume that a.h and b.h files are obtained from third party library. These files don't contain #ifndef VAR statement. I am not allowed to change their header files. Can I resolve macro 'VAR' redefinition error in myFile.c or myFile.cpp file which uses VAR macro? I know I #undef VAR can be used to undefine a macro VAR. How can I selectively include VAR later in my program? i.e. on line 10 of myFile.c code I should be able to refer to VAR definition from a.h file, on line 15 of my code I should be able to refer to VAR from b.h file and on line 18 again I should be able to refer to VAR from a.h file. In short, am I able to do macro polymorphism ? Given a name of header file, it should refer to macro definition present in that file. I thought of using namespace trick to resolve an issue. Define first header file in namespace first and second header file in namespace second. I tried defining two namespaces. First namespace contains #include a.h and second namespace contains b.h. However, namespace trick does not work with macro. When I tried to access firstns::VAR, compiler reports an error message. Can you please suggest some way?

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• Boost::binary<> [c++][Boost]

  - by atch

  Hi, Is there anything in boost libraries like binary? For example I would like to write: binary<10101> a; I'm ashamed to admit that I've tried to find it (Google, Boost) but no results. They're mention something about binary_int< but I couldn't find neither if it is available nor what header file shall I include; Thanks for help.

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