Hi all,

Jesse Liberty writes:

"Note that the String class provides the operator+. The designer of
the Employee class has
blocked access to the operator+ being called on Employee objects by
declaring that all the string
accessors, such as GetFirstName(), return a constant reference.
Because operator+ is not (and
can't be) a const function (it changes the object it is called on),
attempting to write the following will
cause a compile-time error:

String buffer = Edie.GetFirstName() + Edie.GetLastName();"

(the String class he refers to is a custom String class coded for
demonstration purposes)

I agree that the line will cause a compile time error because operator
+ isn't defined as a const method:

constString.operator+(anotherConstString) <- will not compile

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My goal is to allow users to enter in an equation that will be
calculated. In order to do this I’ve attached a parser to the program.
Unfortunately the equation has to be calculated millions of times. For
example

while(count !=limit)
{
Xnext= x+1;

x=xnext;
}

The parser is called to recalculate the equation every cycle which I
believe is the reason is why the program is as slow as Christmas. I
was wondering if there was any way to store the equation once it is
parsed to allow it to run at least close to the speeds it would of the
equation was hardcoded.

Here is the relevant part of the code in this example assume args and
args2 are x+1 and y+1.

int calculate()
{

Hi,
~
I have found myself in need of some code resembling a Hashmap
~
This is easily done in Java this way:
~
import java.util.*;

Let's say I have this code

--------------------
class GenericQueue
{
public:
bool Pop(void*& refToPtr); //--------------(1)

};

class SpecialQueue: private GenericQueue
{
public:
bool Pop(T*& refToPtr)
{
return
GenericQueue::Pop(refToPtr); /

Let's say I have this code

--------------------
class GenericQueue
{
public:
bool Pop(void*& refToPtr); // //--------------------(1)

};

class SpecialQueue: private GenericQueue
{
public:
bool Pop(T*& refToPtr)
{
return
GenericQueue::Pop(refToPtr); /

Let's say I have this code

--------------------
class GenericQueue
{
bool Pop(void*& refToPtr); // //--------------------(1)

};

class SpecialQueue: private GenericQueue
{
public:
bool Pop(T*& refToPtr)
{
return GenericQueue::Pop(refToPtr); //--------------------(2)
}

};

.... The statement in (2) generates an error.

I know it doesn't compile because we're passing a pointer in (2) to a
function that expects a reference to a pointer, but as soon as we go
into the code block in (2), refToPtr becomes just the pointer. How do
I get it as a reference to pointer so I can pass it correctly?

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Hi,

I'm having files with a name pattern like "log_record-YY-MM-DD" and i would
like to create a list of the files available.
I'm wondering how i can do this, any ideas?

Thank you!
Ron

char s[7] = "1234567";

when we use C compiler (gcc), it works fine.
An error is reported if using C++ compiler (g++).

any story for this one?

Vol