D - New to group, quick question/suggestion
- Jonathan Andrew (60/60) Apr 09 2002 Just as I was getting fed up with C and C++, what does a random glance
- Pavel Minayev (4/26) Apr 09 2002 No, it doesn't work so.
-
OddesE
(10/11)
Apr 09 2002
"Pavel Minayev"
-
Walter
(3/7)
Apr 09 2002
It is now
. (I added support for member functions for struct's.) - Pavel Minayev (8/10) Apr 09 2002 Oh, yes. One thing I really like in Walter is that he silently does all
- Sean L. Palmer (5/6) Apr 10 2002 Awesome!
- Walter (3/10) Apr 11 2002 Of course.
Just as I was getting fed up with C and C++, what does a random glance
at Dr. Dobbs reveal? :)
I love the ideas so far, I just have one quick question. I'm not too
familiar with the whole concept
of delegates, but would it be possible to declare these as part of a
struct and call them like a class
method? I might not have any idea what I'm talking about, but what I am
thinking is as follows:
struct foo
{
int a;
int b;
void delegate(inout int a, inout int b) swap;
swap = &numswap(inout int, inout int);
}
void numswap(inout int x, inout int y)
{
int tmp;
tmp = x;
x = y;
y = tmp;
}
Then you could call foo.swap(), which would in turn call numswap(), and
switch the contents of a and b.
I realize the syntax for declaring and initializing delegates/function
pointers are still up in the air, I tried
to make sense of it as best I could and present them here in a
reasonable manner.
Perhaps what I am really looking for is a way to make classes/objects as
simple as structs, with the
added bonus that delegates/function pointers can be part of the struct.
i.e.
(note that I might be taking some liberties with the delegate
initialization ideas)
class bar
{
int a;
int b;
void delegate(intout int a, inout int b) swap = &numswap(inout int,
inout int);
}
void numswap(intout int x, inout int y)
{
int tmp;
tmp = x;
x = y;
y = tmp;
}
This could be called with bar.swap() like any other function method.
Having the meat of the class methods outside of the actual class
declaration seems a little bizarre to me, and I'm sure somebody could
come up
with a much better way to do this. Basically, by making all class
methods just pointers to functions,
could structs be eliminated without sacrificing the usefullness of
having a lightweight data structure? Maybe
come up with an all-in-one data container that allows both easy
object-oriented programming and also
is familiar to C programmers who just need to use a simple struct.
-Jonathan Andrew
Apr 09 2002
"Jonathan Andrew" <jon ece.arizona.edu> wrote in message
news:3CB33E18.494436C7 ece.arizona.edu...
I love the ideas so far, I just have one quick question. I'm not too
familiar with the whole concept
of delegates, but would it be possible to declare these as part of a
struct and call them like a class
method? I might not have any idea what I'm talking about, but what I am
thinking is as follows:
struct foo
{
int a;
int b;
void delegate(inout int a, inout int b) swap;
swap = &numswap(inout int, inout int);
}
void numswap(inout int x, inout int y)
{
int tmp;
tmp = x;
x = y;
y = tmp;
}
Then you could call foo.swap(), which would in turn call numswap(), and
switch the contents of a and b.
No, it doesn't work so.
Wouldn't it be simplier to just declare swap() as member of struct?
Apr 09 2002
"Pavel Minayev" <evilone omen.ru> wrote in message news:a8vh40$18kk$1 digitaldaemon.com...<SNIP>Wouldn't it be simplier to just declare swap() as member of struct?Is that possible in D? -- Stijn OddesE_XYZ hotmail.com http://OddesE.cjb.net _________________________________________________ Remove _XYZ from my address when replying by mail
Apr 09 2002
"OddesE" <OddesE_XYZ hotmail.com> wrote in message news:a8voqr$1sc8$1 digitaldaemon.com..."Pavel Minayev" <evilone omen.ru> wrote in message news:a8vh40$18kk$1 digitaldaemon.com...It is now <g>. (I added support for member functions for struct's.)Wouldn't it be simplier to just declare swap() as member of struct?Is that possible in D?
Apr 09 2002
"Pavel Minayev" <evilone omen.ru> "Walter" <walter digitalmars.com> wrote in message news:a8vs2l$25r3$1 digitaldaemon.com...Oh, yes. One thing I really like in Walter is that he silently does all those features that have been requested for a long time, without saying anything, and lets us find them ourselves. =) Just look at the source of dateparse.d... BTW, the best way to find new D features in fresh release is to sort files in src/phobos by date, and check all the newest.Is that possible in D?It is now <g>. (I added support for member functions for struct's.)
Apr 09 2002
Awesome! Non-virtual, of course? Sean "Walter" <walter digitalmars.com> wrote in message news:a8vs2l$25r3$1 digitaldaemon.com...It is now <g>. (I added support for member functions for struct's.)
Apr 10 2002
Of course. "Sean L. Palmer" <spalmer iname.com> wrote in message news:a90vfa$174e$1 digitaldaemon.com...Awesome! Non-virtual, of course? Sean "Walter" <walter digitalmars.com> wrote in message news:a8vs2l$25r3$1 digitaldaemon.com...It is now <g>. (I added support for member functions for struct's.)
Apr 11 2002