Re: a kind of template (or macro) to reuse parts of code...

From:
Richard Damon <news.x.richarddamon@xoxy.net>
Newsgroups:
comp.lang.c++
Date:
Sat, 15 Oct 2011 12:02:16 -0400
Message-ID:
<j7caq9$311$1@dont-email.me>
On 10/15/11 11:54 AM, A wrote:

I tried this (as an dumb example) and it seems to work...
I think I'll be learning a bit more about macros.

The only drawback I see so far is the fact I can't debug the CODEPART1 and
CODEPART2 but except that it is working as intented.

#define CODEPART1 \
std::vector<int> abc(5); \
for (int i = 0; i< abc.size(); i++) \
{ \
abc[i] = i; \
}

#define CODEPART2 \
return abc[4];

int overload(int a)
{
CODEPART1
abc[0] = 0;
CODEPART2
}

int overload(__int64 a)
{
CODEPART1
abc[1] = 0;
CODEPART2
}


The limitations on debugging are a function of the debugger. A good
debugger will at least let you switch into an assembly view of the code
to see what is happening.

If you are having trouble with a macro expansion, replacing the macro
with its expanded text temporarily normally will make it easier to debug
(and then if you needed to change the code, go back and fix the original
macro to match, but ideally you would have debugged the snippet as
independent code before pushing it into a macro.

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