Questions about C++, a statically typed, free-form, multi-paradigm, compiled, general-purpose programming language.

learn more… | top users | synonyms

-2
votes
1answer
300 views

What are steps in making an operating system in C ? [duplicate]

I am trying to make an my own OS. This is for educational purpose only, so that I get to understand the internals as well as get a good idea of low level programming. I have some prior application ...
20
votes
10answers
6k views

Do we still have a case against the goto statement? [duplicate]

Possible Duplicate: Is it ever worthwhile using goto? In a recent article, Andrew Koenig writes: When asked why goto statements are harmful, most programmers will say something like ...
13
votes
7answers
1k views

Does C# experience translate well to C++? [closed]

My programming classes in school were C++, but I ended up working a job doing C# for the last few years. If there was a position that required say 1 or 2 years experience in C++, would my experience ...
9
votes
7answers
2k views

What is idiomatic?

I understand an "idiom" to be a common operation or pattern that in a particular language is not simplified by core language syntax, such as integer increment: i = i + 1; In C++, this idiom is ...
8
votes
7answers
9k views

C/C++ Best indentation length? [closed]

I was reading a Vim tutorial ( http://www.oualline.com/vim-cook.html#drawing ), and came across this: This is very useful if you use a 4 space indentation for your C or C++ programs. (Studies at ...
7
votes
3answers
310 views

Is there a way to use gcc as a library?

Anyone knows a solution that works something like this: #include <stdio.h> #include <gcc.h> /* This .h is what I'm looking for. */ int main (void) { /* variables declaration (...) */ ...
7
votes
6answers
852 views

How does const storage work? (Item 2, Scott Myers Effective C++)

In Item2 on page 16, (Prefer consts, enums, and inlines to #defines), Scott says: Also, though good compilers won't set aside storage for const objects of integer types... I don't understand ...
7
votes
7answers
4k views

What is the use-case to use C++ friend class?

I am trying to understand C++ friend. When is the good use case to use friend? I suppose if we want to let another class have access to another classes attributes, why don't we just make it as public ...
6
votes
4answers
590 views

Split up large interfaces

I'm using a large interface with about 50 methods to access a database. The interface has been written by a colleague of mine. We discussed this: Me: 50 methods is too much. It's a code smell. ...
6
votes
7answers
2k views

Ensuring that headers are explicitly included in CPP file

I think it's generally good practice to #include the header for any types used in a CPP file, regardless of what is already included via the HPP file. So I might #include <string> in both my HPP ...
6
votes
3answers
1k views

Checking preconditions or not

I've been wanting to find a solid answer to the question of whether or not to have runtime checks to validate input for the purposes of ensuring a client has stuck to their end of the agreement in ...
5
votes
5answers
887 views

In C++, is it a reflection of poor software design if objects are deleted manually?

With the advent of smart pointers, is it a sign of poor design if I see objects are deleted? I'm seeing some software components in our product that people are still doing this. This practice strikes ...
4
votes
5answers
836 views

Thoughts on web development architecture through integrating C++ in the future to a web application

I'm looking to build a website (it's actually going to be a commercial startup) I saw this question and it really shed some light on a few things that I was hoping to understand (kudos to the op). ...
3
votes
2answers
195 views

Custom graph comparison?

I'm trying to compare two graphs using hash value ( i.e, at the time of comparison, try to avoid traversing the graph ) Is there a way to make a function such that the hash values compared can also ...
3
votes
6answers
957 views

“As” Naming Convention

I'm experimenting with a naming convention I've devised and am seeking opinion. It involves the use of an "As" infix, and at this point I am envisioning it in the context of JavaScript, C# and C++ ...
2
votes
3answers
764 views

C++: Metaprogramming with a compiler API rather than with C++ features

This started out as a SO question but I realized that it is quite unconventional and based on the actual description on the websites, it might be better suited to programmers.se since the question has ...
2
votes
2answers
377 views

Initialization of objects in a system using dependency injection

This is a follow up question to the following post: Injecting dependencies (DI) in c++ applications In a system that uses DI, someone, somewhere should be responsible to create the various objects ...
2
votes
3answers
361 views

To store data or not?

I'd like to ask you about one simple thing. I have class A that do something (for example counts something ). There is also one class B that handle some parameters to this class (class A is member of ...
1
vote
1answer
201 views

Why does this algorithm work in O(n m)?

This is from a blog post on Codeforces. I couldn't really understand why the editorialist goes on to claim that this code works in O(n m) This is a graph problem, where we are supposed to find the ...
1
vote
3answers
287 views

How to make a random-access archive of text files?

I wrote an application that tests the performance of evolutionary algorithms. This application performs a run of the algorithm which consists of several generations. The data which is produced by my ...
1
vote
3answers
302 views

Better style for member variables?

class awesomeClass { std::list<A> myList; //... void fillList(); }; awesomeClass::awesomeClass() { fillList(); } void awesomeClass::fillList(){ //... foreach(A a, ...
1
vote
3answers
4k views

Two-Dimensional vector in C++ – inefficient with dynamic-sized sub vectors?

I know that std::vector uses a contiguous block of memory, but I often see people use vectors of vectors, even when they modify the number of elements in these vectors contained within an outer ...
1
vote
1answer
1k views

Big project with many external libraries - source code organisation

I was wondering what is the best way to organize my source code. I was researching on SO and found http://stackoverflow.com/a/1398594/137261 but this source code layout is library specific and doesn't ...
1
vote
1answer
429 views

Is this an implementation of the promise pattern?

I am writing a library in C++ (making use of many C++11 features) that (as far as I can tell) implements the promise pattern. The library consists of a class that makes asynchronous network requests. ...
1
vote
1answer
1k views

How can I implement a database TableView like thing in C++?

How can I implement a TableView like thing in C++? I want to emulating a tiny relation database like thing in C++. I have data tables, and I want to transform it somehow, so I need a TableView like ...
1
vote
3answers
1k views

Pattern for Accessing MySQL connection

We have an application which is C++ trying to access MySQL database. There are several (about 5 or so) threads in the application (with Boost library for threading) and in each thread has a few ...
0
votes
1answer
88 views

Is it a bad idea to use mutable for pre-allocated temporaries?

Let us assume I have the following C++ class: class MyFastMessageEncoder { public: MyFastMessageEncoder() : m_fieldEncoder(ENCODING_STYLE_DEFAULT) { } void ...
0
votes
4answers
2k views

How should I go about developing some basic C/C++ knowledge so that I can grok the concepts written in some Classic software programming books? [closed]

I know Java and JavaScript pretty well. I have never really worked on C/C++. But at this stage of my career I feel that the fact that I do not have adequate knowledge on C/C++ syntax(especially ...
0
votes
3answers
283 views

C/C++ in applications that do not concern performance [closed]

C is the best language (or maybe the single language) suitable for operating systems, drivers, embedded systems etc. For more complex domains like computer graphics C++ is a better choice. But these ...
-2
votes
4answers
2k views

Determining the winning condition for Tic-Tac-Toe [closed]

I'm writing a tic-tac-toe game in C++ and now I found a function to check if a player has a winning board for a connect four game. The function looks like this: bool haswon(int64_t board) { ...
24
votes
0answers
2k views

What are the advantages of the Intel C++ compiler? [duplicate]

What are the advantages over the Intel C++ Compiler over the (much cheaper) free alternatives, such as gcc?
17
votes
13answers
2k views

Is it an appropriate use of #define to make typing repeated code easier?

Is there any view on whether using the #define to define full lines of code for simplifying coding is good or bad programming practice? For example, if I needed to print a bunch of words together, I'd ...
14
votes
10answers
2k views

What is the best aproach for coding in a slow compilation environment

I used to coding in C# in a TDD style - write/or change a small chunk of code, re-compile in 10 seconds the whole solution, re-run the tests and again. Easy... That development methodology worked ...
12
votes
9answers
957 views

Avoiding Object Oriented Pitfalls, Migrating from C, What Worked for You?

I've been programming in procedural languages for quite some time now, and my first reaction to a problem is to start breaking it down into tasks to perform rather than to consider the different ...
9
votes
2answers
934 views

Refactoring several huge C++ classes / methods. How to start? [duplicate]

Possible Duplicate: I’ve inherited 200K lines of spaghetti code — what now? I'm dealing with legacy code. It contains some BIG classes (line count 8000+) and some BIG methods (line count ...
6
votes
12answers
2k views

Language Choice for Algorithm Competitions [duplicate]

Hi everyone I have just started taking part in online coding competitions.I would like to know which language would be better as regards efficiency and ease of debugging. I tend to avoid c++ and ...
5
votes
3answers
836 views

Handling false positives and legacy code warnings in static-analysis of C++ code? [closed]

We have a large "legacy" C++ code base on which no static analysis is run at the moment. Every now and then, we are thinking about at least using cppcheck, maybe via Visual Lint. (I've also briefly ...
4
votes
2answers
2k views

C++ GUI Design & Programming

I am familiar with the basics and fundamentals of C++ and now I would like to move on to designing and coding GUI features of it, interactive dialogues, etc... like VB or Delphi Where do I start ...
3
votes
3answers
208 views

Is this a good method to create class hierarchies?

Is it a good design to store the type of the object in the base class as an enum? For example, consider the following hierarchy Expr --Unary --Binary --Const ----Int ----Float How to represent the ...
2
votes
3answers
588 views

Is C++0x Compatible with C?

I have heard that there will be a lot of changes done in C++ because of the new standard (C++0x). My question is: What are the major changes, and will C++0x be compatible with C++ 98 and C ?