comp.lang.c++ Google Group

Re: Size of Exe file

james.ka...@gmail.com (James Kanze) — Sun, 23 Nov 2008 11:36:39 UT

Most of the linker documentation I've seen supposes that one
already knows the real basics: what a linker does (in general),
what a library is, etc. If you're really good, you can probably
deduce much of this from the linker documentation, but
typically, I'd hardly call it pedagogical material.
Yes and no. The standard does say at one point (phases of

Re: Garbage collection in C++

james.ka...@gmail.com (James Kanze) — Sun, 23 Nov 2008 11:26:55 UT

Hmmm. Not only do you not understand beans about software
engineering, you don't even know how to read. (And Solaris
probably still outnumbers Linux for stock market trading. But
that's beside the point.)
Nobody said that it was unpopular. But it does create
management problems, which are usually fixed by sticking to a

Re: Garbage collection in C++

james.ka...@gmail.com (James Kanze) — Sun, 23 Nov 2008 11:21:12 UT

On Nov 22, 12:52 pm, George Kettleborough
True, but Linux is definitely the most widespread.
But I never said anything about free: everything has a cost
somewhere, but running Linux on a PC is a lot cheaper than
running Solaris on a Sparc, and in many cases, it's adequate.
Different applications have different requirements. You don't

Re: Garbage collection in C++

james.ka...@gmail.com (James Kanze) — Sun, 23 Nov 2008 11:12:16 UT

On Nov 22, 2:50 pm, George Kettleborough
[...]
Speed isn't really the issue; semantics are. The most obvious
reason for dynamically allocating an object is that it needs an
arbitrary lifetime, not linked to scope. Other reasons are
linked to language limitations---if you don't know the type or

Re: map

erik-wikst...@telia.com (Erik Wikström) — Sun, 23 Nov 2008 10:26:36 UT

No, you have to use the make_pair() function:
cartesian_2d coord1 = make_pair(1,2);
cartesian_2d coord2 = make_pair(3,2);

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

p...@acm.org (Patricia Shanahan) — Sun, 23 Nov 2008 10:02:46 UT

That is a good plan in the short term, but don't think in terms of
picking one language to use for your whole career. There is no way to
know which languages will be popular in 40 years time.
...
High end programmer salaries depend on a lot of things, such as general
computer science knowledge, programming skill, luck, leadership skill,

Re: g++4.3.2 w/ c++0x: error: no type named ‘iterator’ in ‘class std::unordered_map<...'

b...@gmb.dk (Bo Persson) — Sun, 23 Nov 2008 10:00:20 UT

It just happened to work for std::map, even though it is not required.
The workaround would possibly be to store a pointer or a reference to
the cousin, instead of an iterator.
Bo Persson

Re: memcpy equivalent in C++

b...@gmb.dk (Bo Persson) — Sun, 23 Nov 2008 09:53:23 UT

Because they have heard that using memcpy will make their programs
extremely fast. And that this is very important.
Unfortunately they never heard anything about checking sizeof(dest)
first. :-(
Bo Persson

Re: Why the copy assignment operator is written to return non-const reference to this?

erik-wikst...@telia.com (Erik Wikström) — Sun, 23 Nov 2008 09:41:45 UT

Since when is it a bad practice? Operator overloading can help us hide
the fact that chaining is taking place but it's one of the prime
examples of when to use it.
Sure, there are times when it is bad style to use chaining, like some of
the cases you have shown, but I prefer consistency over special rules

Re: g++4.3.2 w/ c++0x: error: no type named ‘iterator’ in ‘class std::unordered_map<...'

aw...@yahoo.com (Alan Johnson) — Sun, 23 Nov 2008 09:29:57 UT

This may have changed in C++0X (I haven't checked), but in the 2003
standard what you are doing is undefined behavior. You cannot
instantiate a template component for any of the standard library
templates with an incomplete type. Within the definition of My_data,
My_data is an incomplete type.
Reference 17.4.3.6.2 in the 2003 standard.

Re: Opposite of ! operator.

erik-wikst...@telia.com (Erik Wikström) — Sun, 23 Nov 2008 09:29:32 UT

Your asking the wrong question. The real question is why you shouldn't
be allowed to overload the ! operator? Just because you can't find any
use for it does not mean that someone else can't, and remember, it does
not have to return a bool.

Re: Why the copy assignment operator is written to return non-const reference to this?

peter.koch.lar...@gmail.com (peter koch) — Sun, 23 Nov 2008 09:27:08 UT

Re: Why the copy assignment operator is written to return non-const reference to this?

andreytarasev...@hotmail.com (Andrey Tarasevich) — Sun, 23 Nov 2008 09:26:09 UT

Since forever, of course. "Method chaining", just like everything in
C++, is a technique that can be used correctly or incorrectly. When used
correctly, it is a good practice.
... and there's absolutely no "abuse" in the above example, as far as
method chaining is concerned.
And? Obviously 'const' will not help here anyway.

Re: Why the copy assignment operator is written to return non-const reference to this?

singu...@gmail.com (Singulus) — Sun, 23 Nov 2008 08:54:13 UT

Since when method chaining is a good practice in C++? The whole point
of returning reference to this in the copy assignment operator is to
enable chaining of assignments, not to stack another thing to do
(member function calls for example). The const qualifier for the
return reference doen't solve the whole problem of calling member

Re: gotoxy in dev c++

defaultuse...@yahoo.com (Default User) — Sun, 23 Nov 2008 07:53:09 UT

I have no personal experience with it, but sourceforge lists an ncurses
for Windows project.
<[link]>
Brian