• torhu (10/10) Jan 17 2007 I'm translating some C headers.
• torhu (4/19) Jan 17 2007 Eh...seems the compiler doesn't accept 'AL_CONST char *' after all.
• Mike Parker (8/29) Jan 17 2007 You don't need it. Just drop the 'const' altogether:
• Stewart Gordon (10/21) Jan 17 2007 Not as such, because D by design has a context-free grammar. Defining

torhu <fake address.dude> writes:

I'm translating some C headers.


#define AL_CONST const

void set_window_title(AL_CONST char *name) { /* ... */ }


I'm wondering if there is a legitimate way to turn AL_CONST into nothing 
in D.  This compiles:

alias void AL_CONST;

void set_window_title(AL_CONST char *name) { /* ... */ }


But I have no idea if that screws up the parameter type somehow, or if 
it's legal according to the D spec.

Of course I could delete the AL_CONST's.  But I'm just curious.

torhu <fake address.dude> writes:

torhu wrote:
 I'm translating some C headers.
 
 
 #define AL_CONST const
 
 void set_window_title(AL_CONST char *name) { /* ... */ }
 
 
 I'm wondering if there is a legitimate way to turn AL_CONST into nothing 
 in D.  This compiles:
 
 alias void AL_CONST;
 
 void set_window_title(AL_CONST char *name) { /* ... */ }
 

Eh...seems the compiler doesn't accept 'AL_CONST char *' after all. 
Sorry about that.

I'm still interested in other ways of doing this, though.

Mike Parker <aldacron71 yahoo.com> writes:

torhu wrote:
 torhu wrote:
 I'm translating some C headers.


 #define AL_CONST const

 void set_window_title(AL_CONST char *name) { /* ... */ }


 I'm wondering if there is a legitimate way to turn AL_CONST into 
 nothing in D.  This compiles:

 alias void AL_CONST;

 void set_window_title(AL_CONST char *name) { /* ... */ }

 
 Eh...seems the compiler doesn't accept 'AL_CONST char *' after all. 
 Sorry about that.
 
 I'm still interested in other ways of doing this, though.

You don't need it. Just drop the 'const' altogether:

void set_window_title(char* name) { }

Of course, if this is a pure D port of a C program, you'd be better 
served with this form:

void set_window_title(char[] name) {}

And if it is a binding to a C library, this form:

extern(C) void set_window_title(char* name);

Stewart Gordon <smjg_1998 yahoo.com> writes:

torhu wrote:
 I'm translating some C headers.
 
 #define AL_CONST const
 
 void set_window_title(AL_CONST char *name) { /* ... */ }
 
 I'm wondering if there is a legitimate way to turn AL_CONST into nothing 
 in D.  This compiles:

Not as such, because D by design has a context-free grammar.  Defining 
an identifier to resolve to textual nothingness would affect the parsing.

 alias void AL_CONST;
 
 void set_window_title(AL_CONST char *name) { /* ... */ }

<snip>

Another tip: In D pointer declarations, the '*' is strictly associated 
with the type.  So

     char* name

is a preferred style to

     char *name

Stewart.