• Marco Leise (6/6) Jan 22 2014 Can I define them somehow? The use case is defining extern C
• bearophile (5/9) Jan 22 2014 Perhaps you want:
• Marco Leise (10/24) Jan 22 2014 Thanks, but I want it to be a function pointer so I can swap
• Marco Leise (17/31) Jan 22 2014 Got it now. By declaring the literal stub function in a

Marco Leise <Marco.Leise gmx.de> writes:

Can I define them somehow? The use case is defining extern C
functions that contain code to load the real thing from a
library.

  nothrow extern(C) void function(int) someFunc = ???

-- 
Marco

"bearophile" <bearophileHUGS lycos.com> writes:

Marco Leise:

 Can I define them somehow? The use case is defining extern C
 functions that contain code to load the real thing from a
 library.

   nothrow extern(C) void function(int) someFunc = ???

Perhaps you want:

extern(C) nothrow void someFunc(int someArg);

Bye,
bearophile

Marco Leise <Marco.Leise gmx.de> writes:

Am Wed, 22 Jan 2014 17:52:03 +0000
schrieb "bearophile" <bearophileHUGS lycos.com>:

 Marco Leise:
 
 Can I define them somehow? The use case is defining extern C
 functions that contain code to load the real thing from a
 library.

   nothrow extern(C) void function(int) someFunc = ???

 
 Perhaps you want:
 
 extern(C) nothrow void someFunc(int someArg);
 
 Bye,
 bearophile

Thanks, but I want it to be a function pointer so I can swap
it from within the function literal in the fashion of 

  nothrow extern(C) void function(int) someFunc = (int arg) {
      someFunc = GetProcAddress("someFunc");
      someFunc(arg);
  }

-- 
Marco

Marco Leise <Marco.Leise gmx.de> writes:

Am Wed, 22 Jan 2014 17:52:03 +0000
schrieb "bearophile" <bearophileHUGS lycos.com>:

 Marco Leise:
 
 Can I define them somehow? The use case is defining extern C
 functions that contain code to load the real thing from a
 library.

   nothrow extern(C) void function(int) someFunc = ???

 
 Perhaps you want:
 
 extern(C) nothrow void someFunc(int someArg);
 
 Bye,
 bearophile

Got it now. By declaring the literal stub function in a
template instead I can use the normal function declaration
syntax without introducing a new symbol at the definition site:

{
  ...
  nothrow extern(C) void function(int) someFunc = &Stub!someFunc;
  ...
}

nothrow extern(C) auto Stub(alias func)(ParameterTypeTuple!func args)
{
	debug printf("Loading %s...\n", func.stringof.ptr);
	return (func = &impl)(args);
}


-- 
Marco