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digitalmars.D.learn - opCall() in structures

reply Jesse Phillips <jessekphillips gmail.com> writes:
Trying out the example code for opCall and I get a linker error in linux. 
(dmd 1.024)

struct F
{
    int opCall();
    int opCall(int x, int y, int z);
}

void test()
{   F f;
    int i;

    i = f();     	// same as i = f.opCall();
    i = f(3,4,5);	// same as i = f.opCall(3,4,5);
}

void main() {
    test()
}
Dec 09 2007
parent reply Mike <vertex gmx.at> writes:
On Sun, 09 Dec 2007 21:42:44 +0100, Jesse Phillips  =

<jessekphillips gmail.com> wrote:

You need to have the function bodies somewhere too of course:

struct F
{
	int opCall() { return 42; }
}

-Mike

 Trying out the example code for opCall and I get a linker error in lin=

 (dmd 1.024)

 struct F
 {
     int opCall();
     int opCall(int x, int y, int z);
 }

 void test()
 {   F f;
     int i;

     i =3D f();     	// same as i =3D f.opCall();
     i =3D f(3,4,5);	// same as i =3D f.opCall(3,4,5);
 }

 void main() {
     test()
 }

-- = Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
Dec 09 2007
parent Jesse Phillips <jessekphillips gmail.com> writes:
On Sun, 09 Dec 2007 22:02:53 +0100, Mike wrote:

 On Sun, 09 Dec 2007 21:42:44 +0100, Jesse Phillips
 <jessekphillips gmail.com> wrote:
 
 You need to have the function bodies somewhere too of course:
 
 struct F
 {
 	int opCall() { return 42; }
 }
 
 -Mike
 
 Trying out the example code for opCall and I get a linker error in
 linux. (dmd 1.024)

 struct F
 {
     int opCall();
     int opCall(int x, int y, int z);
 }

 void test()
 {   F f;
     int i;

     i = f();     	// same as i = f.opCall(); i = f


     = f.opCall(3,4,5);
 }

 void main() {
     test()
 }


Yeah, good idea, thanks.
Dec 09 2007