On Monday, 4 February 2019 at 19:23:26 UTC, Jacob Carlborg wrote:
You can call it with or without parentheses. It applies to all
functions that don't take any arguments or functions taking a
single argument and are called using UFCS [1].
[1] https://dlang.org/spec/function.html#pseudo-member
On Monday, 4 February 2019 at 10:17:53 UTC, bauss wrote:
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
[...]
Here's the singleton code I've been playing with:
[...]
static bool instantiated_;
// Thread global
__gshared DSingleton instance_;
On 2019-02-04 11:36, Ron Tarrant wrote:
I've seen comments similar to this in several examples. When you say "no
one else" you're personifying callers?
Yes.
And so this means: No caller
outside the object? Which really amounts to: Since no one INside the
object WILL call this() and no one
On Monday, 4 February 2019 at 10:36:49 UTC, Ron Tarrant wrote:
On Sunday, 3 February 2019 at 18:53:10 UTC, Jacob Carlborg
wrote:
You don't need to make it so complicated. Here's a simpler
example:
Excellent. Thank you. Simple is best.
private __gshared auto instance_ = new
On Sunday, 3 February 2019 at 22:25:18 UTC, Dejan Lekic wrote:
I strongly suggest you find the thread started by Andrej
Mitrovic many years ago. He compared several implementations of
(thread-safe) singletons. I it an extremely helpful stuff, IMHO.
Thanks. I'll see if I can find it.
On Sunday, 3 February 2019 at 18:53:10 UTC, Jacob Carlborg wrote:
You don't need to make it so complicated. Here's a simpler
example:
Excellent. Thank you. Simple is best.
private __gshared auto instance_ = new DSingleton;
My understanding is that in D, this line effectively says:
On Sunday, 3 February 2019 at 15:33:15 UTC, Russel Winder wrote:
There is a lot of good stuff (both positive and negative) on
Singleton here, but there is also a bit of prejudice and
bigotry. Many of the links are worth looking through.
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement
a singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
Can someone show me a code example
On Sunday, 3 February 2019 at 14:42:13 UTC, Ron Tarrant wrote:
This morning I was Googling "singleton replacement" and someone
on another forum said Factory would do the job. Anyone have
thoughts on that?
It's usually replaced with inversion of control: the service
instance is passed as an
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement
a singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
Can someone show me a code example
On 2019-02-02 17:56, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement a
singleton. I found all kinds of examples of singleton definitions, but
nothing about how to put them into practice.
Can someone show me a code example for how one would actually
On Sun, 2019-02-03 at 14:42 +, Ron Tarrant via Digitalmars-d-learn wrote:
> On Sunday, 3 February 2019 at 10:28:51 UTC, Alex wrote:
>
> > Isn't deriving a singleton even eviler as having one? ;)
>
> Perhaps this was meant as rhetoric, but I think you may be right.
>
> This morning I was
On Sunday, 3 February 2019 at 10:28:51 UTC, Alex wrote:
Isn't deriving a singleton even eviler as having one? ;)
Perhaps this was meant as rhetoric, but I think you may be right.
This morning I was Googling "singleton replacement" and someone
on another forum said Factory would do the job.
On Sunday, 3 February 2019 at 11:17:38 UTC, Jonathan M Davis
wrote:
I don't recall std.thread ever existing, and std.c.time hasn't
been around for a while. Thread is in core.thread, and all of
the C bindings for standard C and OS APIs are supposed to be in
druntime. So, the equivalent to C's
On Sunday, February 3, 2019 2:41:48 AM MST Ron Tarrant via Digitalmars-d-
learn wrote:
> On Saturday, 2 February 2019 at 19:40:25 UTC, Andre Pany wrote:
> > https://rosettacode.org/wiki/Singleton#D
>
> Do you know if this is for a current version of D? The compiler
> is choking on the import
On Sunday, 3 February 2019 at 09:46:20 UTC, Ron Tarrant wrote:
On Saturday, 2 February 2019 at 20:30:15 UTC, Neia Neutuladh
wrote:
And consider putting the class in its own source file.
Yes, by all means.
Speaking of which...
Considering the nature of a singleton such the one in the top
On Saturday, 2 February 2019 at 20:30:15 UTC, Neia Neutuladh
wrote:
And consider putting the class in its own source file.
Yes, by all means.
Speaking of which...
Considering the nature of a singleton such the one in the top
post, I can't see it being possible to use one as a base class
On Saturday, 2 February 2019 at 19:40:25 UTC, Andre Pany wrote:
https://rosettacode.org/wiki/Singleton#D
Do you know if this is for a current version of D? The compiler
is choking on the import statements, complaining that it can't
read std/thread.d and std/c/time.d
On Saturday, 2 February 2019 at 19:40:25 UTC, Andre Pany wrote:
I found here an example:
https://rosettacode.org/wiki/Singleton#D
Kind regards
Andre
Thanks, Andre. Exactly what I was hoping for.
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
So, my big question is, do I instantiate like this:
DSingleton singleton = new DSingleton;
Or like this:
DSingleton singleton = singleton.get();
And subsequent calls would be...? The same? Using get() only?
This seems to be
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement
a singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
Can someone show me a code example
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement
a singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
[...]
If you haven't already been
On Saturday, 2 February 2019 at 19:23:58 UTC, Ron Tarrant wrote:
Thanks for the replies, fellow programmers. (generic, unisex,
PC, and all-encompassing)
If I could trouble someone for a complete working example so I
have something to study, that would be excellent.
I think that's what you
On Sat, 02 Feb 2019 17:34:11 +, Eugene Wissner wrote:
> For creation get() should be always used, since it is the most
> convenient way to ensure that there is really only one instance of the
> singleton. Just make this() private, so only you can create new
> instances:
>
> private this()
> {
On Saturday, 2 February 2019 at 19:23:58 UTC, Ron Tarrant wrote:
Thanks for the replies, fellow programmers. (generic, unisex,
PC, and all-encompassing)
If I could trouble someone for a complete working example so I
have something to study, that would be excellent.
I found here an example:
Thanks for the replies, fellow programmers. (generic, unisex, PC,
and all-encompassing)
If I could trouble someone for a complete working example so I
have something to study, that would be excellent.
On Saturday, 2 February 2019 at 16:56:45 UTC, Ron Tarrant wrote:
Hi guys,
I ran into another snag this morning while trying to implement
a singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
Can someone show me a code example
On Sat, 2019-02-02 at 16:56 +, Ron Tarrant via Digitalmars-d-learn wrote:
> Hi guys,
and gals.
> I ran into another snag this morning while trying to implement a
> singleton. I found all kinds of examples of singleton
> definitions, but nothing about how to put them into practice.
Hi guys,
I ran into another snag this morning while trying to implement a
singleton. I found all kinds of examples of singleton
definitions, but nothing about how to put them into practice.
Can someone show me a code example for how one would actually use
a singleton pattern in D? When I
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