Re: Re: Cmath and math.h Changes in Xcode 2.4

• Subject: Re: Re: Cmath and math.h Changes in Xcode 2.4
• From: "Lucas Eckels" <email@hidden>
• Date: Tue, 29 Aug 2006 18:59:50 -0400
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> The "correct C++" way of doing this is:
>
> #include <cmath>
>
> You can then refer to the isnan function as std::isnan within your code.
> Alternatively you can declare:
>
> #include <cmath>
> using namespace std;
>
> ...and then not have to qualify isnan with std::
>
> Note that the above is not Apple specific.

Just to clarify, don't do 'using namespace std;' in a header file. This will
pollute the namespace of any file that ends up including this header. As I
mentioned, OSG's math stuff is in a public header, so this would wreak havoc
on people's code.

You can use just 'using std::isnan' if you want to avoid using std::
everywhere you use isnan, but also avoid polluting the namespace.

Lucas
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