- Original Message -
From: David Abrahams [EMAIL PROTECTED]
Newsgroups: gmane.comp.lib.boost.devel
Sent: Thursday, August 28, 2003 9:05 PM
Subject: Re: boost/detail/iterator.hpp update
...
Anyone got a brilliant way to cause vc7 to print the error message?
#pragma message ( some text
Edward Diener [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Extremely dangerous and error prone. I can't even imagine a non-POD type
where flagging it for memcpy_copyable and memcpy_moveable can be right.
Can
you give an example ?
It is error prone but many other constructs are
John Maddock [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
He needs to take a look at the has_trivial_* traits:
has_trivial_assign is roughly equivalent to memcpy_copyable
I guess there is no equivalent to memcpy_moveable: but it looks rather
dangerous,
It looks dangerous but
Edward Diener [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
...
But even for a POD type such as this, copying would lead to
errors if the char * data were dynamically allocated since a double delete
would probably be done.
Containers aware of memcpy_moveable can detect this flag
Edward Diener [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
...
But even for a POD type such as this, copying would lead to
errors if the char * data were dynamically allocated since a double delete
would probably be done.
Containers aware of memcpy_moveable can detect this flag
David Abrahams [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Pavel Vozenilek [EMAIL PROTECTED] writes:
Type traits library may be extended with:
- memcpy_copyable and
- memcpy_moveable
see boost::is_POD.
memcpy_moveable may be useful for non-POD types, like some pimpls
David Abrahams [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
...
I don't believe you can use memcpy to move any non-POD types portably,
i.e. without special knowledge of the compiler.
Thats my point - you may flag some types as safely moveable and then use
this knowledge in
From: David Abrahams [EMAIL PROTECTED]
I need the ability to do interprocess synchronization through file
locking, c.f. Java.File.createNewFile and Java.File.deleteOnExit:
...
On Posix, the first one would be done with
open(..., O_CREAT | O_EXCL)
and the second, I suppose, would be done
Terje Slettebø [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Make no mistake - this is a lot of work, too. However, it may be much less
work than creating one from scratch. What do we want - vaporware of a
Boost
GUI library coming real soon now, perhaps not appearing for many
Hello Jano,
Jan Gaspar [EMAIL PROTECTED] wrote
The updated circular_buffer implementation can be found
at the common place
http://groups.yahoo.com/group/boost/files/circular_buffer.zip
I looked briefly over the code:
1. IMO the macro based exception handling isn't needed, it is better
In relation to the previous discussion I thought an
alternative container may be a circular_deque that could
have the kind of flexibility with resizing that
also sounds desirable.
Does a circular_deque sound like the right solution
to your particular application, rather than a
vector-like
Nigel Stewart [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Wouldn't it be better to use smaller internal memory block initially and
resize it only when demand goes up?
That's a good point, but it certainly complicates both the interface
and the semantics of the container.
Nigel Stewart [EMAIL PROTECTED] wrote in message
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IMO the resize/shrink cannot be added via adaptor (unless it is very
complex
one).
An adaptor that wraps push() and insert() would
be considerd too heavy-weight?
I think it is pretty heavyweight, but maybe there's
Gennaro Prota [EMAIL PROTECTED] wrote
...
I had this problem with dynamic_bitset and, after discussing it with
Phil Edwards (who is one of the maintainers of libstdc++), I came up
with the macro that is currently in
http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/boost-sandbox/boost-sandbox/b
Would it be possible to add helper function 'flatten()' into
circular_buffer?
After invocation, user would be sure of:
buff[0] buff[1] ... buff[n]
In other words, user will be able to treat circular_buffer content as
continuous array of values in this moment.
It is not earth shaking
Hello Jano,
Jan Gaspar [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
3. This fragment fails:
struct Test {}
circular_bufferTest a(2);
a.push_back(Test());
a.push_back(a[0]);
I don't understand this. IMHO there will be 2 copies of Test(). Nothing
should be
Peter Dimov [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
...
There is currently no BOOST_HAS_CURRENT_FUNCTION since the idealistic goal
has been to cover all widely used compilers one day,
...
On the other hand, perhaps you have a use case that clearly demonstrates
the
need for
Boost 1.30, Windows.
libs/thread/src/once.cpp, function call_once(), CreateMutex() should be
replaced with CreateMutexA() in one place.
Looking into the code, I have question: if the 'called once' function
throws, it leaves (under Win32) opened mutex and this can deadlock the app
(if there are
John Torjo [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi all,
I was just thinking (actually, I needed this, while doing some coding),
that
STATIC_ASSERT could get a little of the SMART_ASSERT flavour.
What am I talking about?
In case a STATIC_ASSERT fails, how about dumping
Robert Ramey [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
H - I never imagined that something like this would be so problematic.
For now with my VC 7.0 compiler I can use the following and it gives
me almost exactly what I need. The warning message points exactly
to the
Terje Slettebø [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
[snip]
int main()
{
function_ptrint (A*, int), A::a_member fn;
// The rest the same
A a;
int r=fn(a, 3); // sets r to 9
}
Is it similar (in principle) to
John Maddock [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
That will certainly work, but you shouldn't have to do that since the
compiler itself defines _WCHAR_T_DEFINED. Since I made the fix earlier
this
afternoon I am able to compile some non-boost code correctly which had
lexical_cast constructs and destroys std::stringstream
(including dynamic memory allocation/free.)
each time a conversion is done.
Maybe specialised version of lexical_cast can be developed
which takes external, existing stringstream instance as
template parameter and reuses it.
Very rough
Beman Dawes [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
I'll try to trace where BOOST_NO_INTRINSIC_WCHAR_T is being set. I'm not
so
worried about ADL, at least with VC++ 7.1.
You may look on test table
http://aspn.activestate.com/ASPN/Mail/Message/boost/1614864.
(Warning : when
Guillaume Melquiond [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi,
I found a bug in the interval library. but when I corrected it, I stumbled
over another problem: this bug was ironically what allowed the library to
be correctly compiled with my version of the compiler (Intel
Terje Slettebø [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
If one were to implement currency conversion, how might that be done, in
general?
Does one need to store the conversion rates between any two currencies
(giving an N^2 size table), or might it be possible to convert any
Trevor Taylor [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
So it sounds to me like the :blat is *not* part of the extension. It
sounds like the NT file name is made up of three parts: name, extension
and stream.
In which case I think it is fine to have functions extension() and
John Torjo [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
assert( (i j) || (i == 0) || (j == 1) ); would change into
SMART_ASSERT( (v_(i) v_(j)) || (i == 0) || (j == 1) );
The output of the above (in case the assertion fails) can look like:
Assertion failed:
'(v_(i) v_(j))
Jason House [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
:blat ???
1. I have no clue what that would mean
2. Is there any handling of :blat in any way shape or form in the file
system stuff? I don't remember seeing any description of that case...
It means alternate stream of
I wrote Quantity library some time ago and wonder whether it may get added
into Conversion library. If anyone gets interested I will Boostify and
submit it.
Quantity library is used to get safe conversions between different physical
units (like between Celsius and Farhernheit degrees). Instead
- Original Message -
From: Fernando Cacciola [EMAIL PROTECTED]
Following snippet of code fails:
-
#include boost/optional.hpp
#include utility
void foo(const boost::optionalstd::pairunsigned, unsigned aux =
boost::optionalstd::pairunsigned, unsigned ())
Alisdair Meredith [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Russell Hind wrote:
WinAPI Note: we can get a higher resolution using the
QueryPerformanceCounter API (and QueryPerformanceFrequency if resolution
info is required)
It is (was) not completely reliable: see Q274323
I use Borland C++ Builder 6, update 4, STLPort 4.5.1 (provided by Borland)
and Boost is 1.30.0beta1.
Following snippet of code fails:
-
#include boost/optional.hpp
#include utility
void foo(const boost::optionalstd::pairunsigned, unsigned aux =
David Abrahams [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Peter Dimov [EMAIL PROTECTED] writes:
From: David Abrahams [EMAIL PROTECTED]
Philippe A. Bouchard [EMAIL PROTECTED] writes:
Lock mechanism was added to shifted_ptr:
Ihsan Ali Al Darhi [EMAIL PROTECTED] wrote in message
01d001c2c2ba$6af14ea0$73c721d4@h8p7o2">news:01d001c2c2ba$6af14ea0$73c721d4@h8p7o2...
Can I use this library to implement multiple undo/redo in GUI applications
under Windows? For example in a word processor.
Undo/redo is generic mechanism
Robert Ramey [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Is there such a thing as is_abstract_baseT similar to is_polymorphicT
?
Is such a thing possible? I could use it but have been unable to figrure
out how to do it.
Rani Sharoni wrote
Andrei Alexandrescu [EMAIL PROTECTED] wrote in message
b0pu01$bqd$[EMAIL PROTECTED]">news:b0pu01$bqd$[EMAIL PROTECTED]...
Al Stevens has an article in a past DDJ about a generic undo/redo library,
can anyone dig it out? I recall it was interesting.
Can be purchased here:
Rani Sharoni posted one possible implementation on http://tinyurl.com/459q
(c.l.c++.m, 2002-07-11, topic 'is_abstract_class implementation!').
The implementation depends on border-case C++ feature (more in Rani's text).
I compiled it sucessfully with Comeau online compiler.
It may be
Beman Dawes [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
[snip]
If I understand you correctly, those are counts of the number of files.
Yes. The visible tendency is to provide all formats: zip/gz/bzip2. Previous
releases typically come with only zip/gz and
Beman Dawes [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
At 03:05 PM 11/29/2002, Pavel Vozenilek wrote:
Bandwith and time of those with dialup can be saved by compressing Boost
release by BZIP2 compressor (http://sources.redhat.com/bzip2/).
Bandwith and time of those with dialup can be saved by compressing Boost
release by BZIP2 compressor (http://sources.redhat.com/bzip2/).
For example boost_1_29_0.tar.gz has size 5 272 kB, tared and compressed by
bzip2 size is 4 282 kB (down to 81%).
Boost size will grow (Spirit lib has over
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