What other c++ constructs can I use instead of #define for executing a
couple of functions?
Example:
#define DO_STUFF doThis(); doThat();
I'd guess that I can either use a template function, an inlined function or
an inlined static method.
//1
namespace MyUtils
{
template<>
void doStuff()
{
doThis();
doThat();
}
}
//2
namespace MyUtils
{
inline void doStuff()
{
doThis();
doThat();
}
}
//3
class MyUtils
{
public:
static inline void doStuff() const
{
doThis();
doThat();
}
}
I *believe* that the template version always is inlined, and that the other
2 versions is probably inlined.
Are theese approaches correct?
Which should be preferred?
Are there any other better way?
/Carl
Jul 22 '05
14  4464 
Robbie Hatley wrote: "Carl Ribbegaardh" <ca************ *********@hotma il.com> wrote:
#define DO_STUFF doThis(); doThat();
I actually like that. Simple, direct, ALWAYS inlined.
It's dangerous, though. What if you have code like:
if (condition)
DO_STUFF
else
do_something_el se();
This won't expand properly. You should write the macro as:
#define DO_STUFF {doThis(); doThat();}
but IMO using an inlined function would be better.
--
Mike Smith
On Mon, 05 Jul 2004 12:13:55 +0200, Carl Ribbegaardh wrote: "Mark A. Gibbs" <x_*********@ro gesr.com_x> wrote in message
news:rq******** ******@news04.b loor.is.net.cab le.rogers.com.. .
One more question on the subject:
Why is (for example) SUCCEEDED and FAILED (in winerror.h) implemented as
macros?
..and other stuff that's common like SAFE_DELETE and so on...
Is it just done by habit, or are there any other reason for not using inline
functions?
The standard windows headers can be used in either C or C++ programs. And
inline functions are a C++-only nicety...
- Jay
Jay Nabonne wrote: On Mon, 05 Jul 2004 12:13:55 +0200, Carl Ribbegaardh wrote:
"Mark A. Gibbs" <x_*********@ro gesr.com_x> wrote in message
news:rq******** ******@news04.b loor.is.net.cab le.rogers.com.. .
One more question on the subject:
Why is (for example) SUCCEEDED and FAILED (in winerror.h) implemented
as macros?
..and other stuff that's common like SAFE_DELETE and so on...
Is it just done by habit, or are there any other reason for not using
inline functions?
The standard windows headers can be used in either C or C++ programs.
And inline functions are a C++-only nicety...
That's not true. ISO C has been knowing the inline keyword for 5 years
now, and many C compilers have been supporting it for a much longer
time. The windows headers have never been ISO compliant anyway, so they
could have used inline, too.
On Thu, 08 Jul 2004 11:12:18 +0200, Rolf Magnus wrote: Jay Nabonne wrote:
On Mon, 05 Jul 2004 12:13:55 +0200, Carl Ribbegaardh wrote:
"Mark A. Gibbs" <x_*********@ro gesr.com_x> wrote in message
news:rq******** ******@news04.b loor.is.net.cab le.rogers.com.. .
One more question on the subject:
Why is (for example) SUCCEEDED and FAILED (in winerror.h) implemented
as macros?
..and other stuff that's common like SAFE_DELETE and so on...
Is it just done by habit, or are there any other reason for not using
inline functions?
The standard windows headers can be used in either C or C++ programs.
And inline functions are a C++-only nicety...
That's not true. ISO C has been knowing the inline keyword for 5 years
now, and many C compilers have been supporting it for a much longer
time. The windows headers have never been ISO compliant anyway, so they
could have used inline, too.
I had a feeling someone would object to that.
How about this replacement for my last line then: at the time that the
Windows header files were developed (> 5 years ago), C compilers (in
particular the Microsoft C compiler) didn't support inline functions.
Does that sit well enough? :)
- Jay
"Jay Nabonne" <ja*@rightagain BYTEME.com> wrote in message
news:pa******** *************** ****@rightagain BYTEME.com... On Thu, 08 Jul 2004 11:12:18 +0200, Rolf Magnus wrote:
Jay Nabonne wrote:
On Mon, 05 Jul 2004 12:13:55 +0200, Carl Ribbegaardh wrote:
"Mark A. Gibbs" <x_*********@ro gesr.com_x> wrote in message
news:rq******** ******@news04.b loor.is.net.cab le.rogers.com.. .
>
One more question on the subject:
Why is (for example) SUCCEEDED and FAILED (in winerror.h) implemented
as macros?
..and other stuff that's common like SAFE_DELETE and so on...
Is it just done by habit, or are there any other reason for not using
inline functions?
The standard windows headers can be used in either C or C++ programs.
And inline functions are a C++-only nicety...
That's not true. ISO C has been knowing the inline keyword for 5 years
now, and many C compilers have been supporting it for a much longer
time. The windows headers have never been ISO compliant anyway, so they
could have used inline, too.
I had a feeling someone would object to that.
How about this replacement for my last line then: at the time that the
Windows header files were developed (> 5 years ago), C compilers (in
particular the Microsoft C compiler) didn't support inline functions.
Does that sit well enough? :)
- Jay
Now I understand better why the API's looks like they do. Thanks a lot! :-D
/Carl This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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