Hello,

I'm experiencing a strange problem with STL's set and maps (probably I'm
misusing the container).

When I instantiate a type like this:

std::set myset;

I'm required to define an operator < for CMyclass in order for the set
(and map) to work.

However I'm wondering why I am not forced to define also an operator ==
(if I do, it is ignored) since to check whether a certain object is in
the set I need to test for exact match and not only for a greater/lesser
relation.

For example:

CMyclass A;

// fill A with proper data
// ...

Hi folks.

I have some classes which are derived from some base:

class base {
void foo();
void bar();
};

class a : public base {
};

class b: public base{
};

The problem is as follows:

1) I would like to prevent users from making instances of
class base
2) There are no overloaded functions beween the base class
and the derived classes, so I can not use the usual

virtual void overloaded_function() = 0;

in the base class.

As far as I can see, there are two ways to proceed:

Hi All,

i am getting error during explicit function Instantiation for a class
Template
if i do explicit Instantiation of class it work and all function
symbol i get in object file
But if i try to expose only one function of my class its failing

#include

template
class A
{
const T max(const T a,const T b)
{ return ((a
const T min(const T a,const T b)
{ return ((a };

// used for Explicit Instantiation of class
//template class A;

Hello to all expect C++ programmer, recently i have developed a smart
pointer class but i don't know how to implement a reference counting.

My smart pointer is non-intrusive smart pointer.

My question is
1. I need a simple reference count ptr class
2. Does cyclic reference counting can be solved ?
3. Does policy based design is good approaches in smart pointer ?
4. What should i define in smart pointer template class ?
5. Does smart pointer syntax correct ?

In STL, there just write class U = XXX but why i need the template
. What this mean ?

I know what is template.

This is my code so far.

[code]

template template
class StoragePolicy = DefaultSPStorage,

template
class OwnershipPolicy = RCPtr,

hi
We are supplier in china Footwear Apparel Handbags Jeans&Pants Cap
Accessory
1) Top quality, reasonable price, safe shipping, and best service
2) Sport shoes for men, women and kids with all sizes available
3) Sport shoes with different colors and styles available in stock
4) The material and size can be required to make in accordance with
customers' requests

Price :8-35usd 6-30EURO 5-30Pounds

size chart
Men Size:
US: 7 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14 15
UK: 6 7 7.5 8 8.5 9 9.5 10 10.5 11 12 13 14
EUR: 40 41 42 42.5 43 44 44.5 45 45.5 46 47.5 48 49
Women Size:
US: 5 5.5 6 6.5 7 7.5 8 8.5
UK: 2.5 3 3.5 4 4.5 5 5.5 6
EUR: 35.5 36 36.5 37.5 38 38.5 39 40

Hi

I have downloaded install ACE 5.6.6

Installation Step

01] cd /usr/src/ACE_wrappers
02] mkdir objdir
03] cd objdir
04] ../configure
05] make && make install
06] export ACE_ROOT=/usr/src/ACE_wrappers
07] export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ACE_ROOT/ace
08] cd /usr/src/ACE_wrappers/ace
09] ln-s config-linux.h config.h
10] ln -s platform_linux.GNU platform_macros.GNU ln-s
platform_linux.GNU platform_macros.GNU

Then I have return simple program.. named "client.cpp"

#include "/usr/src/ACE_wrappers/ace/Log_Msg.h"

void foo(void);

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Hi,

I have this C code which does complex number arithmetic. When I try to
write a similar file for C++, it says that "creal’ was not declared in
this scope". Can anyone give a better idea to write it using
"complex.h", other than using own data structures?

#include
#include

int main(){

// double pi = 4*atan2(1);

double complex A = 32 + 24*I;
double complex B = 64 + 48*I;
double complex sum = A + B;

printf("\na is %%f + %%fi\n",creal(A), cimag(A));
printf("b is %%f + %%fi\n",creal(B), cimag(B));
printf("sum is %%f + %%fi\n",creal(sum), cimag(sum));
printf("sum: abs = %%f , angle = %%f\n", cabs(sum), carg(sum));

return(0);

}

using Dev C++ 4.9.9.2 there is a template for a windows app where do i
put my code in it? or does anyone know any other code i could use to
make a window?

Hi,

The following code doesn't work at the commented line. I'm wondering
why C++ grammar is defined this way. Shouldn't C++ be smarter enough
to figure out whether an member function or a free function shall be
used?

Thanks,
Peng

#include

struct A {
A(int a) : _a(a) { }
int _a;
};

void doit(const A &a) {
std::cout << a._a << std::endl;
}