comp.lang.c++ Google Group

Re: C++ Primer 4th edition

2008-12-02T00:26:22Z

amit wrote:
I've always been partial to "How to Program C++" by Dietel & Dietel
especially if you've had C exposure.
-Wally

Re: map of map.

2008-12-01T23:55:29Z

<snip>
Hard to note if you are new, you need the the space between the two
'>'.
<snip>

Re: map of map.

2008-12-01T23:54:05Z

aTuL ha scritto:
On second thought, the >> is probably not the cause of this particular
error. Have you included <map> and is there a using std::map somewhere?
Here's a minimal example that compiles fine:
int main()
{
std::map<int, std::map<short, short> > mpObj;

Re: binary format of the number.

2008-12-01T23:49:21Z

So you want it to support grouped binary values? What would be the format,
something like this?
0b00000011_11000000_00000000_0 0000000
Whenever I deal with hardware or other systems using bitmasks, I define
the mask constants once, then use bitwise operators to combine them. And
when defining them, I'd use 1 shifted left by the bit number, not a hex

Re: map of map.

2008-12-01T23:44:07Z

aTuL ha scritto:
You have to write it like this:
map<int, map<short, short> > mpObj;
Note that the next version of C++ will fix this problem.

Re: binary format of the number.

2008-12-01T23:39:01Z

In article <492ee0d4$0$90269$14726...@new s.sunsite.dk>,
Nope. Not in the language.
But if you're willing to take the runtime hit, see about using the
strtoul() function. And maybe wrap it up in a template or macro so you
don't have to specify the base.

map of map.

2008-12-01T23:26:07Z

Hi All,
I want to create a map of key and another map object (it is another
map of key value pairs). I have declared it as
map<int, map<short, short>> mpObj; it gives me an error that, "error:
ISO C++ forbids declaration of ‘map’ with no type". Does this mean I
can not create a map of a map the object? Have I done something wrong?

Re: binary format of the number.

2008-12-01T22:47:46Z

No way that I know of in C/C++, but for the record, it can be done
in Perl this way:
0b1000110
or even:
0b0100_0110
(I know this is slightly off-topic, but I thought it worth
mentioning.)
(In case you're wondering, Perl allows the '_' character to be
interspersed in a number, much like we use commas/periods to make big

Re: converting floating point types round off error ....

2008-12-01T21:32:08Z

The address is not illegal as a char*, but as a double*, it can be. On some
machines, some types have alignment requirements, like e.g. that a double
can only be at an address that is a multiple of sizeof(double). If you try
to dereference a pointer that doesn't meet this alignment requirement,
a CPU exception might be the result. On some other machines mis-aligned

Re: preprocessor question

2008-12-01T20:57:45Z

If this is so, and if this is just one file this appears in, you
could use the '__LINE__' macro. But Maxim's suggestion seems better.
Schobi

Re: what is the following type

2008-12-01T20:57:29Z

Mosfet a écrit :
Hum actually I think it's a function type ... Someone to confirm ?

what is the following type

2008-12-01T20:55:25Z

Hi,
I am looking at some source code and in one file there is the following
definition :
typedef enum _EXCEPTION_DISPOSITION {
ExceptionContinueExecution,
ExceptionContinueSearch,
ExceptionNestedException,
ExceptionCollidedUnwind,
ExceptionExecuteHandler
typedef EXCEPTION_DISPOSITION EXCEPTION_ROUTINE (

Re: converting floating point types round off error ....

2008-12-01T20:19:54Z

I hate to become a nuisance but do you have a source where I obtain
some more information on all this? I'm having a hard time
understanding how a char* address could be illegal.
OK! I sent a private message to the OP a few days ago to see if/how
he/she resolved this. He hasn't. The OP said he's seen a handful of

SPEC CPU search program announced

2008-12-01T19:23:01Z

SPEC CPU Benchmark Search program:
SPEC is looking for applications that
could be used in the next SPEC CPU
suite; submissions that are accepted
by SPEC and are included in the next
suite earn their submitters $5000 and
a license for the new suite (when released).
Details: [link]

Re: Who gets higher salary a Java Programmer or a C++ Programmer?

2008-12-01T19:11:33Z

That a contradiction exists is not the same as that it is proven,
provable or valid.
It missed the point. A logical contradiction exists, and by its
existence can prove, for example, the invalidity of an assumption. If
the contradiction in that case did not exist, one could not disprove
the assumption - it is the existence of the contradiction that does