• Matthias Pleh <user example.net> Sep 15 2011
• Trass3r <un known.com> Sep 15 2011
• Matthias Pleh <user example.net> Sep 15 2011
• Trass3r <un known.com> Sep 15 2011

Matthias Pleh <user example.net> writes:

When porting c-code to D, I come consitently to the problem,
how to convert such a c-macro:

#define V(a,b,c) glVertex3d( a size, b size, c size );
#define N(a,b,c) glNormal3d( a, b, c );
N( 1.0, 0.0, 0.0); V(+,-,+); V(+,-,-); V(+,+,-); V(+,+,+);
...

Ok, I could just write it out, but that's not the case.
Sometimes I just want to keep it small and clear as in this example.
I've started with some static functions and use it in mixins:

static string V(string a, string b, string c) {
	return "glVertex3d("~a~" size, "~b~" size, "~c~" size)";	
}
static string N(string a, string b, string c) {
	return "glNormal3d("~a~","~b~","~c~");";
}


But I wonder, if there is another clean solution for this?
Any regards.

Matthias

Trass3r <un known.com> writes:

Am 15.09.2011, 13:37 Uhr, schrieb Matthias Pleh <user example.net>:

 When porting c-code to D, I come consitently to the problem,
 how to convert such a c-macro:

 #define V(a,b,c) glVertex3d( a size, b size, c size );
 #define N(a,b,c) glNormal3d( a, b, c );
 N( 1.0, 0.0, 0.0); V(+,-,+); V(+,-,-); V(+,+,-); V(+,+,+);
 ...

 Ok, I could just write it out, but that's not the case.
 Sometimes I just want to keep it small and clear as in this example.
 I've started with some static functions and use it in mixins:

 static string V(string a, string b, string c) {
 	return "glVertex3d("~a~" size, "~b~" size, "~c~" size)";	
 }
 static string N(string a, string b, string c) {
 	return "glNormal3d("~a~","~b~","~c~");";
 }


If you are willing to write V(+1,-1,+1) instead you can just turn them  
into functions.
Also by static function you probably mean private in D.

Matthias Pleh <user example.net> writes:

On 15.09.2011 13:48, Trass3r wrote:
 If you are willing to write V(+1,-1,+1) instead you can just turn them
 into functions.



 Also by static function you probably mean private in D.


it also works without the static keyword.

Trass3r <un known.com> writes:

 Also by static function you probably mean private in D.


 it also works without the static keyword.


I think static has no meaning in global scope, only in function scope  
where it tells the compiler you don't want a closure.