From: Eljay Love-Jensen <eljay@adobe.com>
To: svisor@lycos.com, gcc-help@gcc.gnu.org
Subject: Re: Inherited member( void )const - const to be or not to be
Date: Tue, 07 Sep 2004 12:58:00 -0000 [thread overview]
Message-ID: <6.1.2.0.2.20040907075501.01eafe30@iplan-mn.corp.adobe.com> (raw)
In-Reply-To: <chheqb$k1i$1@sea.gmane.org>
Hi Jarmo,
Don't use _CONST ... that's a reserved symbol.
All symbols starting with underscore followed by a capital letter are
reserved. All symbols with two underscores in a row anywhere are reserved.
I've fixed your code, works now just fine. Compiled either way.
BTW: using the -DCONST=const is preferred. So much so, that you should
just have const in the code. Const correctness should be worked in from
the beginning.
HTH,
--Eljay
- - - - - - - - -
// Compile #1: g++ -DCONST=const foo.cpp
// Compile #2: g++ -DCONST= foo.cpp
#include <cstdio>
class CProvider
{
protected:
const char* str;
public:
CProvider(const char* s)
: str(s)
{
printf("CProvider(%s)\n",str);
}
void echo() CONST
{
printf("CProvider(%s)::echo()\n", str);
}
};
class CAbstract
{
public:
CAbstract()
{
printf("CAbstract\n");
}
virtual ~CAbstract()
{ }
virtual CProvider CONST* getProvider() CONST = 0;
};
class CAllocated : public CAbstract
{
protected:
CProvider* ptr;
public:
CAllocated()
{
printf("CAllocated\n");
ptr = new CProvider("Allocated");
}
virtual CProvider CONST* getProvider() CONST
{
return ptr;
}
};
class CInherited : public CAbstract, public CProvider
{
public:
CInherited()
: CProvider("Inherited")
{
printf("CInherited\n");
}
virtual CProvider CONST* getProvider() CONST
{
return this;
}
};
int main()
{
CAllocated tmp1;
CInherited tmp2;
tmp1.getProvider()->echo();
tmp2.getProvider()->echo();
CAbstract* pTmp1 = &tmp1;
CAbstract* pTmp2 = &tmp2;
pTmp1->getProvider()->echo();
pTmp2->getProvider()->echo();
}
next prev parent reply other threads:[~2004-09-07 12:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-06 11:01 SVisor
2004-09-07 12:58 ` Eljay Love-Jensen [this message]
2004-09-07 16:35 ` SVisor
2004-09-07 17:10 ` Eljay Love-Jensen
2004-09-21 13:34 ` Claudio Bley
2004-09-21 13:41 ` Claudio Bley
2004-09-07 16:40 lrtaylor
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