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

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4
votes
4answers
4k views

Why isn't it possible to switch between header and cpp in Visual Studio? [closed]

For the last eight years I wait for Microsoft to add the basic C++ functionality of switching back and forth between .h and .cpp files, and it keeps astonishing me it is still not supported in Visual ...
1
vote
2answers
1k views

log4cxx: is it a stable option to include as part of distributed library? [closed]

We are porting our Java API library to C++. (Our target platforms are Linux and Windows.) Since we have minimal C++ experience, the learning curve has been pretty steep, but overall we have been able ...
0
votes
1answer
209 views

How we call an RPC that not only calls external functions but also updates data structures?

I have a simple C++ RPC that lets you have remote class instances that support live members (data structures) update as well as method calls. For example I had a class declared like this (pseudocode): ...
18
votes
7answers
3k views

Does modular programming affect computation time?

Everyone says that I should make my code modular, but isn't it less efficient if I use more method calls rather than fewer, but larger, methods? What is the difference in Java, C, or C++ for that ...
3
votes
2answers
2k views

What is the best solution for static memory allocation?

I'm working on image processing and I need to use big Images in a critical system. A good practice for critical systems is to avoid dynamic allocation of memory but what is the design/recommendations ...
3
votes
1answer
120 views

Ported Functions Licensing

I have found several functions in python 2.7.2 to be very useful and I recreated them in C++ for my own uses. How do I properly give python credit for them? Do I even have to? I never actually looked ...
4
votes
2answers
1k views

Learning YACC nowadays, does it make sense? [closed]

I have a huge project that is using YACC and I would need to fix a bug in it. I might ask someone else who wrote that to fix it but I'm interested in how compilers work. Does it make sense to learn ...
5
votes
2answers
1k views

Java naming conventions vs. C++/C naming conventions

I am a Java developer who is starting to pick up more and more C++/C (yes I know they're different, bear with me). One thing that struck me as odd was the different naming conventions used by these ...
1
vote
5answers
2k views

Starting with 3D programming [closed]

I will be working on a 3D project and i need to learn c++ and opengl fast. as i have heard it is the best combination to do graphics. I would also like your recommendation on this book I came ...
2
votes
1answer
269 views

How can I distinguish between one-worded expressions and two-worded expressions?

I was told to create two lists concerning most frequently used words from a plain text (10 Mb arbitrary texts) as monograms (for single worded expressions such as human, water, is) and bigrams (for ...
2
votes
4answers
662 views

How to provide a ubiquitous object without including it in every parameter list

I'm writing a small C++ class, Block, to transform serialized data into a memory structure, and supply the structured data to callers through several accessor methods. I've tried to keep its scope ...
2
votes
2answers
372 views

Event based logging. Is it a good idea and is it ok to pass a handle to a “logged” object?

Hi I have fairly complex program that is doing computations in a quite large loop. I want to log some basic statistic about the run to be able to analyze its performance over time and vs loop number. ...
8
votes
3answers
815 views

C++ Web Development: Wanting a minimalist start [closed]

I'm currently working on a Computer Science degree, and I want to build my own Web Server library. The problem? Every search I've done on interacting with web sites points to "Use this library that ...
0
votes
1answer
497 views

Comparing performance of different C++ self-made tree data structures

I have two tree data-structures that I made in C++ , and they give a response for range queries/point queries in that program. I am using Ubuntu. I need help in understanding the way to compare the ...
0
votes
1answer
661 views

Is there a proper way to allow access to private list by reference?

I'm trying to provide a by-reference getter to a list of objects in a class. My setup looks something roughly like this: class c_Container { public: c_Item* Get(int uid); private: c_Item ...
5
votes
6answers
2k views

Stroustrup and the C++ complexity admission [closed]

I heard from a friend that Bjarne Stroustroup admitted that he doesn't know entirely the C++ programming language due to its vast complexity Is it true and there's some referrable sources or is it ...
-1
votes
5answers
909 views

New to Programming/objective c [closed]

I've recently started to work on some iPhone apps, starting from a base where I had essentially no programming experience (I studied Maths & had very few programming modules) I worked my way ...
19
votes
3answers
2k views

Must I think about compiled machine code when I write my code?

For example I've got following code: auto z = [](int x) -> int { if (x > 0) { switch (x) { case 2: return 5; case 3: return 6; default: return 1; ...
1
vote
4answers
3k views

Help with learning the C++ Qt Framework [closed]

I've been a longtime PHP web developer. But now I've reached the limits and web doesn't fascinate me anymore. I am interested in learning cross-platform development. I have learned Java for almost a ...
2
votes
5answers
672 views

Why is TDD not working here?

I want to write a class A that has a method calculate(<params>). That method should calculate a value using database data. So I wrote a class Test_A for unit testing (TDD). The database access ...
0
votes
1answer
516 views

Understanding how memory contents map into a struct [closed]

I am not able to understand how bytes in memory are being mapped into a struct. My machine is a little-endian x86_64. The code was compiled with gcc 4.7.0 from the Win64 mingw32-64 distribution for ...
0
votes
2answers
773 views

When to decide to introduce interfaces (pure abstract base classes) in C++?

Assume that you are developing a functionality and are 90% sure that the implementation class will stay alone. If I was in this position in Java I would probably not use the interface right now to ...
4
votes
1answer
415 views

Are C or C++ The Only Viable Languages for a GC

Background I have just finished writing a compiler for a functional language compiling to the JVM as a learning project. However, since I'm just doing this to learn, I thought it might be interesting ...
0
votes
1answer
141 views

Share Mulitple Classes as one dll or a lib with Mulitple Projects

Currently I have some shared class files(.cpp and .h) which I include them in around 20 Projects. Currently I have to include them in all of the projects. So if I get some business requirments and I ...
0
votes
3answers
209 views

which style of member-access is preferable [duplicate]

the purpose of oop using classes is to encapsulate members from the outer space. i always read that accessing members should be done by methods. for example: template<typename T> class foo_1 { ...
5
votes
4answers
11k views

Putting semicolons after while and if statements in C++

How come in C++ when you put: while (expression); the while loop doesn't run no matter if the expression is true or not. However if you put: if (expression); the statement runs no matter if ...
10
votes
8answers
3k views

Should we persist with an employee still writing bad code after many years? [closed]

I am putting this question to C++ programmers because: a) Only a C++ programmer can judge the technical merits of the examples; b) Only a programmer will have a feel for the temperament of another ...
4
votes
2answers
396 views

Writing Large Portions Of Code Then Debugging?

Lately I have been writing a game engine, and I have been writing a lot of "foundation stuff" (standard interfaces, modules, a message system ect.), but I have noticed a pattern, a lot of the stuff is ...
27
votes
3answers
2k views

Except garbage collector, what else makes Java a non real time programming language

Except the garbage collector, what are some other features in Java that make it unsuitable for real time programming? On the net, whenever Java vs C++ is discussed with regards to real time ...
40
votes
3answers
35k views

Why is Python written in C and not in C++? [closed]

In Python's tutorial one can read that Python's original implementation is in C; On the other hand, the Python implementation, written in C, (...) I'm very curious why was Python written in C ...
19
votes
7answers
6k views

Learning C++ properly (not C with classes) [duplicate]

The typical reason I hear to why people bash C++ is that they don't actually know C++, they just know "C with classes", which apparently is different. I am just beginning to learn C++, however, I want ...
8
votes
5answers
639 views

Is it a good idea to read compiler source code? [closed]

I'm a junior in college majoring in Computer Science. Apart from writing lots of code, I want to start reading source code written by others to improve my coding skills and learn better/different ways ...
-1
votes
2answers
89 views

Store a tree with near next neighbours

I would to find an efficient structure (speed and volume) to store nodes and their neighbourhood. My input is build out of stings in the following format ./X/Y.log where X ∈ [0,359] and Y ...
1
vote
1answer
664 views

Chrome's multiple process per each tabs

I am wondering what is the purpose of Chrome using multiple processes for each tabs? I asked this to C++ chat room and one responded it is a product of laziness. I personally believe this is an ...
0
votes
2answers
618 views

Do preprocessor defines slow down build times?

I have a very large c++ project and I'm trying to decrease build times. I've been religious about forward declaring and only including files which are used. However I have many preprocessor defines ...
5
votes
2answers
13k views

Pure C++ for iOS apps [closed]

Is it possible to use only C++ to create iOS apps? Is there any downside to that? I read somewhere that you have to use a mix of objective C and C++ if you want to use C++ that bad.
-1
votes
1answer
560 views

How to reconstruct this application using design pattern

I am engaging in redesigning a linux c++ server application. The application acts as file relayer in the form of receiving file packets (incuding control packets and data packets) from client A, ...
35
votes
4answers
11k views

How to make the switch to C++11?

I've been programming in C++ for a while now, but mostly things centered around the low-level features of C++. By that I mean mostly working with pointers and raw arrays. I think this behavior is ...
7
votes
3answers
5k views

Data classes: getters and setters or different method design

I've been trying to design an interface for a data class I'm writing. This class stores styles for characters, for example whether the character is bold, italic or underlined. But also the font-size ...
6
votes
3answers
492 views

Coding Convention: C++ Header/Interface Files

I'm reading through a PDF on C++ programming from this page on Stanford's site. It says that when you're creating a C++ header file for a library interface, use a #ifndef preprocessor command to make ...
7
votes
2answers
578 views

Database Facade to wrap our existing queries?

We have a very big application written in C++ using the MFC framework (millions of code lines). No need to say that it's a legacy system, but it's also heavily maintained and updated. This application ...
0
votes
1answer
1k views

Should I use webKit or is there a better technology to make a browser in Windows [closed]

I create web applications most in RoR and PHP. About a year ago a company wanted to use my app but in a stand alone browser window in Linux, so I wrote one in python using webkit, locked it down to ...
6
votes
5answers
3k views

Programming Style in Large Scale C++ Applications

Recently I've been browsing source code of large applications written in C++ to learn a bit but I couldn't help but notice that most if not all use a lot of IFDEFs and class-less functions (where they ...
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 ...
10
votes
8answers
2k views

Is writing software easier than reading and understanding it from scratch? [closed]

Me and a friend of mine were discussing yesterday about differences between writing a large C++ software and understanding it as a new recruit. Is it possible that since a software gets done one line ...
0
votes
2answers
117 views

I'm trying to figure out which functions from one C library are being used by C project. Does anyone have a simple solution? [closed]

To be specific, I want to know which function/types in libpri and being used in the Asterisk project. I'm not traditionally a C programmer, but I know some basic stuff because I took a class in ...
2
votes
2answers
548 views

C++ Using Intrinsics in a Cross-platform Manner

I have a cross platform math library that I am working on and I want to make sure that some common operations are performed in an optimized manner, so I wish to use some intrinsic functions wrapped in ...
6
votes
3answers
2k views

Is relying on implicit argument conversion considered dangerous?

C++ has a feature (I cannot figure out the proper name of it), that automatically calls matching constructors of parameter types if the argument types are not the expected ones. A very basic example ...
7
votes
3answers
395 views

Change of the complexity class through compiler optimization?

I am looking for an example where an algorithm is apparently changing its complexity class due to compiler and/or processor optimization strategies.
1
vote
1answer
937 views

Balance Tree with depth n has how many nodes maximum?

I couldn't find the answer anywhere, but let's say we have a B-Tree with min = 1 and max = 2: What is the formula to calculate the maximum number of nodes in this B-Tree if the depth is say 100? This ...