Cplusplus Mattters - Your Cplusplus News Channel

problems with polymorphism and inheritance with templates

This code: template class Foo { public: T* member; class Base { typedef Foo BaseFoo; class Derived { typedef Foo D... 5 days ago From C++ Users Group

assignment of std::valarray

Hi all. Im trying to parse the C++0x documentation related to the assignment of std::valarray. This code is tested under g... 8 days ago From C++ Users Group

Any news?

Hi @all, I just wanted to know if there is any news on this topic. In my opinion, cv-qualified constructors would be a nice... 13 days ago From C++ Users Group

Output order for cout << "Hello, " << "world!" ?

Hello Is it true that the language does not actually guarantee the output order for cout like it could possibly output &q... 14 days ago From C++ Users Group

copy constructor elision

class A { class B : public A { B(const B& other); public: explicit B(){} int main() { A const & a = B(); // L1 A a2 = ... 22 days ago From C++ Users Group

Digital Mars C/C++ Compiler: test results

I have tested free Digital Mars C/C++ Compiler v. 8.52 from [link] The results were impressive, so I decided to show here h... 22 days ago From C++ Users Group

Set implementation in STL

How are sets generally implemented in STL. I have read they are implemented as BST, are they some kind of balanced BST like ... 26 days ago From C++ Users Group

Prefer Using Futures or Callbacks to Communicate Asynchronous Results

Handling asynchronous communication back to the caller 22 days ago From Dr.Dobb's: C++

Research projects aim to drive the development of a more robust, secure, and reliable Internet About 13 hours ago From Dr.Dobb's: C++

Array Building Blocks: A Flexible Parallel Programming Model for Multicore an...

Array Building Blocks provides developers with advanced data-parallel programming capabilities 1 day ago From Dr.Dobb's: C++

No End to DLL Hell!

DLL Hell is back on the Windows programming scene -- and with a vengence 1 day ago From Dr.Dobb's: C++

Overloading macros

The feature of function overloading can prove to be pretty useful: it allows us to define a few versions of the same function... 2 days ago From cplusplus.co.il

Passing "empty" types as parameters

Hello, What is the recommended way to pass "empty" types as parameters? By empty I mean that they have no fields ... 4 days ago From C++ Users Group

ANN: new release of fructose with support for hamcrest matchers

This is to announce a new release of FRUCTOSE, a C++ unit test framework. It is very cutdown compared to CppUnit and is desi... 4 days ago From C++ Users Group

This Week's Developer Reading List

Amazon SimpleDB, Git, Ruby and Rails 4 days ago From Dr.Dobb's: C++

Undefined behavior on integer literals overflow ?

Hello I have been reading through the C++ standard and I am surprised to see that users ought to make sure that integer lite... 5 days ago From C++ Users Group

Is there a way to create a file stream from a C stream (a FILE *) ?

Hello The C language has a function tmpfile() that just opens a temporary file for reading and writing that has the propert... 5 days ago From C++ Users Group

std::accum w/ unary op

I just had quite a confusing bout with my compiler, until I realized that the following wasn't part of the standard: namesp... 5 days ago From C++ Users Group

C++0x standard code conversion facets and text in UTF-8 encoding

I have been trying to write some code that handles reading text from text files. I would like to support UTF-8 encoding, wit... 6 days ago From C++ Users Group

[ANN] LibXL 3.0.1 released

{ The website says this library can be used in C++. -mod } Hi, I'm pleased to announce the LibXL 3.0.1. LibXL is a library... 7 days ago From C++ Users Group

C++ FAQ

URL: [link] Archive-name: C++-FAQ ============================== ============================== ================== Content... 7 days ago From C++ Users Group

ParBenCCh 1.0 Parallel C++ Benchmarking Suite

A C and C++ application suite designed to characterize compiler optimization capabilities and more 8 days ago From Dr.Dobb's: C++

Performance Optimization for the Atom Architecture

The focus of multi-core processor tuning is on the effective use of parallelism 8 days ago From Dr.Dobb's: C++

Declaring a template class with two template params a friend in a non-templat...

I have an abstract class: class Attribute { /* ...*/ }; Now I have another class: template class Mgr { static U *creat... 8 days ago From C++ Users Group

Computational Behavioral Science Project

Carnegie Mellon joins NSF research consortium to develop tools for analyzing autism, among other behaviors 9 days ago From Dr.Dobb's: C++

SMT Boosters Recognized at Verification Event

HVC 2010 Award announced for five researchers who have promulgated Satisfiability Modulo Theories 9 days ago From Dr.Dobb's: C++

Updated serialization performance results

I've recently updated this page -- [link] -- with results based on Boost 1.44. The previous version of that page used Boos... 9 days ago From C++ Users Group

Unable to read the bits of a 'float' using char*

Hello everyone, I wrote these two functions for reading the bits of a float. However, I can't figure out why the first meth... 16 days ago From C++ Users Group

Assigning value of unassigned iterator

Hi all. I've been running c++ code under Linux gcc 2.93->4.4.3, OSX, and Windows (VisualStudio 2005-2008) for > 3 years. N... 9 days ago From C++ Users Group

member function as predicate

{ Unintended linebreaks are removed manually. Please limit your text to 70 columns or so to prevent unintended linebreaks. -... 19 days ago From C++ Users Group

Sorting by a transformation function

Hi, I would like to sort a vector ordered by the return value of a unary transformation function, op. The elements of the v... 16 days ago From C++ Users Group

Problem with printing to a file

Hi, I wrote a program in which the main part is a loop with a big number of iterations (the program takes about 1 day to pe... 22 days ago From C++ Users Group

Shallow copy

Hi I am writing a library in C++. In my library I want to implement a feature that if an application programmer instantiates... 26 days ago From C++ Users Group

implicit copy/move constructors

I've been testing rvalues in gcc 4.5 and VC 2010 and noticed they both generated implicit copy constructors even though I pr... 17 days ago From C++ Users Group

returning a std::auto_ptr, a question of style

Hello, I am using a class that returns a pointer to memory that I have to take charge of. I will assign it to a std::auto_p... 10 days ago From C++ Users Group

why allow class and typedef to use the same name?

We know both class and typedef declare types. I do not understand why the same name could be used for both a class and a typ... 14 days ago From C++ Users Group

Vptr

Hi! I have another naive question. I have been trying to understand the polymorphysim implementation in C++. I believe tha... 23 days ago From C++ Users Group

C++ template compile error on g++ 4.1.2

Can anyone explain to me why the following code doesn't compile (I stripped it down from a larger multi-file application). I... 17 days ago From C++ Users Group

Compile error on templated STL map class

I have a class template (ExclusiveMap) which takes two type parameters C1 and C2 and declares two private members map and ma... 22 days ago From C++ Users Group

Linkage confusion with "const" variabes

I have a few questions about the linkage from the following variables. By examples of 7.1.1/7 of C++03 and experimenting wit... 12 days ago From C++ Users Group

Can I have your feedback on this general mix-in pattern?

Hi, I needed to implement cloning and saw that I ended up with copy and paste all over the code. I thought that this should... 18 days ago From C++ Users Group

Should C++0x contain a distinct type for UTF-8?

Hi I have posted this question to c.std.c++ a few weeks back but failed to get any useful response. So I thought I'd try a ... 11 days ago From C++ Users Group

Deducing the object type from a pointer to member function

I was having some fun with pointers to member functions recently, and I'm wondering if this is correct C++ (a minimal exampl... 14 days ago From C++ Users Group

Groups down

The groups are experiencing server problems. We expect to be back on line evening of 12 August. Messages in queues will be ... 22 days ago From C++ Users Group

Why does a base function hide a function in a derived class?

It is normal that a function in derived class hides one in a base class. But, I could explain to myself how a base function ... 22 days ago From C++ Users Group

argument packs manipulations

Hello, I am trying to make a class that acts like the following, but in any dimension: template struct Vec3 { T tab[3];... 14 days ago From C++ Users Group

C/C++ query(nested struct)

In case of a nested struct, does the inner struct can access the private member of outer struct. struct str1 { private: ... 28 days ago From C++ Users Group

See Your Ad Here

const static data member from abstract class crashes my program

Hi All, Thanks in advance for any help / insight on this matter. 1) This piece of code (inside the class ReassignCaseReques... 7 days ago From C++ Users Group

Integral promotions for char16_t, char32_t, and wchar_t

According to N3092 - 4.5/2, "A prvalue of type char16_t, char32_t, or wchar_t (3.9.1) can be converted to a prvalue of... 10 days ago From C++ Users Group

STL implementation of list::sort

I was wondering how is list member function sort implemented in STL. Since list has bidirectional iterator so any of the ran... 22 days ago From C++ Users Group

C/C++ query

Initializing an array via a variable is restricted in C++. int a=5; int arr[a];//error I checked it in GNU compilers to my... 28 days ago From C++ Users Group

Hilo Update – Introducing “Hilo Annotator”

In May this year, we announced Project Hilo and promised a set of cool sample applications written in C++. At that time we ha... 10 days ago From Visual C++ Team Blog

template function (vector vs. vector)

hi, there, I have void Foo1(vector& v){ .... A.process(v[i]); .... void Foo2(vector& v){ .... A.process(v[i]); .... ... 16 days ago From C++ Users Group

Serious Gaming

Georgia Institute of Technology incorporates "serious gaming" in research efforts 21 days ago From Dr.Dobb's: C++

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