Re: Objective C++ from Objective C
Re: Objective C++ from Objective C
- Subject: Re: Objective C++ from Objective C
- From: Wayne Packard <email@hidden>
- Date: Mon, 02 Feb 2009 17:16:58 -0800
Hi,
The build system uses the file extension of the source file to
determine how to treat the code in the file. .m files get treated as
Objective-C (by default). .mm files get treated as Objective-C++. Try
renaming your source code file from sourcecode.cpp.objcpp to
sourcecode.mm and see if you get better results.
wp
On Feb 2, 2009, at 5:08 PM, James Trankelson wrote:
Hi,
For the majority of my OS X programming life, I've been using
Objective C exclusively. However, I now have a reason to want to use
some C++ standard template libraries, and have started looking into
Objective C++. I've found the documentation on Objective C++ lacking,
and was hoping if someone could just show me how I can accomplish the
following:
From an Objective C class, allocate an object that can contain
references to C++ standard template libraries.
For example:
#include "OCPP_Class.h"
@implementation OC_Class
-(void) foo {
OCPP_Class *bar = [[OCPP_Class alloc] init];
}
@end
@implementation OCPP_Class
-(id) init
{
std::list<int> temp;
}
@end
When I try to compile this (with the latter compiled as
sourcecode.cpp.objcpp), the compiler complains about the reference in
the OC_Class where I allocate my object. Something about the first
parameter being of the wrong pointer type.
While this sounds like something I might suspect with C++ trying to
send the this pointer, I have no idea how to get around this, or how
to fix it. Can anyone point me in the right direction?
Thanks.
-jim
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