• Zhenya (23/23) Jan 12 2013 Hi!
• Maxim Fomin (26/29) Jan 12 2013 Probably this can help: (you can manually construct a delegate
• Zhenya (4/33) Jan 12 2013 Thank you,it really can help me.
• Maxim Fomin (5/7) Jan 12 2013 Global functions rewritten as UFCS functions are not delegates,
• Zhenya (2/9) Jan 12 2013 Understood,thank you.

"Zhenya" <zheny list.ru> writes:

Hi!
Tell me please,is there any way to pass member-function to 
template?
I need something like that:

template execute(alias obj,alias mfun)
{
     void execute()
     {
         obj.mfun();
     }
}

struct Foo
{
    void nothing()
    {
    }
}

void main()
{
     Foo f;
     execute!(f,Foo.nothing)();
}

I could pass mfun by string,but I think it's a little bit ugly.

"Maxim Fomin" <maxim maxim-fomin.ru> writes:

On Saturday, 12 January 2013 at 18:17:47 UTC, Zhenya wrote:
 Hi!
 Tell me please,is there any way to pass member-function to 
 template?

Probably this can help: (you can manually construct a delegate 
combining function and context pointers)

import std.stdio;

template execute(alias func)
{
     void execute(void* ptr)
     {
         void delegate() dg;
		  dg.funcptr = &func;
		  dg.ptr = ptr;
		  dg();
     }
}

struct Foo
{
    void nothing()
    {
		writeln("reached");
    }
}

void main()
{
     Foo f;
     execute!(Foo.nothing)(&f);
}

"Zhenya" <zheny list.ru> writes:

On Saturday, 12 January 2013 at 19:06:27 UTC, Maxim Fomin wrote:
 On Saturday, 12 January 2013 at 18:17:47 UTC, Zhenya wrote:
 Hi!
 Tell me please,is there any way to pass member-function to 
 template?

 Probably this can help: (you can manually construct a delegate 
 combining function and context pointers)

 import std.stdio;

 template execute(alias func)
 {
     void execute(void* ptr)
     {
         void delegate() dg;
 		  dg.funcptr = &func;
 		  dg.ptr = ptr;
 		  dg();
     }
 }

 struct Foo
 {
    void nothing()
    {
 		writeln("reached");
    }
 }

 void main()
 {
     Foo f;
     execute!(Foo.nothing)(&f);
 }

Thank you,it really can help me.
But I would like to handle not only member-function,but global 
function too(by UFCS) if it's possible.

"Maxim Fomin" <maxim maxim-fomin.ru> writes:

On Saturday, 12 January 2013 at 19:16:02 UTC, Zhenya wrote:
 But I would like to handle not only member-function,but global 
 function too(by UFCS) if it's possible.

Global functions rewritten as UFCS functions are not delegates, 
they are still functions, so they can be handled just as other 
functions. In such case it is enough to supply null to void* 
parameter.

"Zhenya" <zheny list.ru> writes:

On Saturday, 12 January 2013 at 19:24:04 UTC, Maxim Fomin wrote:
 On Saturday, 12 January 2013 at 19:16:02 UTC, Zhenya wrote:
 But I would like to handle not only member-function,but global 
 function too(by UFCS) if it's possible.

 Global functions rewritten as UFCS functions are not delegates, 
 they are still functions, so they can be handled just as other 
 functions. In such case it is enough to supply null to void* 
 parameter.

Understood,thank you.