• Walter (3/3) Sep 08 2002 Implemented templates.
• Patrick Down (31/38) Sep 08 2002 It not a template bug. But I've found the
• Walter (3/6) Sep 08 2002 Thanks, I have it fixed now. It'll go out in the next update.
• anderson (3/6) Sep 09 2002 That was fast! D really moving along.
• Walter (15/19) Sep 09 2002 There's about 1/4th as much code to do templates in D as opposed to

"Walter" <walter digitalmars.com> writes:

Implemented templates.

ftp://ftp.digitalmars.com/dmdalpha.zip

Not well tested :-( just proof of concept.

Patrick Down <pat codemoon.com> writes:

"Walter" <walter digitalmars.com> wrote in news:alglfa$6l0$1
 digitaldaemon.com:

 Implemented templates.
 
 ftp://ftp.digitalmars.com/dmdalpha.zip
 
 Not well tested :-( just proof of concept.
 
 

It not a template bug.  But I've found the
following problem.  The following program
incorrectly prints:

Inside: 12,34
Outside: 14,11

struct Size
{
  int width;
  int height;
}

Size computeSize()
{
  Size foo;
  
  foo.width = 12;
  foo.height = 34;
  
  printf("Inside: %d,%d\n",foo.width,foo.height);
  
  return foo;
}

int main(char[][] argv)
{
  Size bar;
  bar = computeSize();
  
  printf("Outside: %d,%d\n",bar.width,bar.height);

  return 0;
}

"Walter" <walter digitalmars.com> writes:

"Patrick Down" <pat codemoon.com> wrote in message
news:Xns9283ED9A04DDBpatcodemooncom 63.105.9.61...
 It not a template bug.  But I've found the
 following problem.  The following program
 incorrectly prints:

Thanks, I have it fixed now. It'll go out in the next update.

"anderson" <anderson firestar.com.au> writes:

That was fast! D really moving along.


"Walter" <walter digitalmars.com> wrote in message
news:alglfa$6l0$1 digitaldaemon.com...
 Implemented templates.

 ftp://ftp.digitalmars.com/dmdalpha.zip

 Not well tested :-( just proof of concept.

"Walter" <walter digitalmars.com> writes:

"anderson" <anderson firestar.com.au> wrote in message
news:alhk11$2k80$1 digitaldaemon.com...
 That was fast! D really moving along.
 "Walter" <walter digitalmars.com> wrote in message
 news:alglfa$6l0$1 digitaldaemon.com...
 Implemented templates.


There's about 1/4th as much code to do templates in D as opposed to
templates in C++ ! The savings came from:

1) explicit, rather than implicit, instantiation
2) being about to group related declarations under one template declaration
3) elimination of the nuisance of const/volatile in type deduction
4) elimination of template parsing/lexical ambiguities
5) elimination of overloading rules between template and non-template
functions
6) elimination of the type dependent and type independent name lookup rules

One thing I kept was the brilliant C++ partial specialization idea. Stripped
of the complexity of the C++ version, it is marvelous how slick it works.

Of course, since nobody has yet attempted to build a D STL, I might be all
screwed up here. We'll see.