Singleton, alias to self?

[Vladde Nordholm via Digitalmars-d-learn]

I'm not sure of how to use alias efficiently, so I want to know 
if I could somehow do this (psuedo-code)


class Singleton
{
  //So instead of calling `Singleton.getSingleton()` you just 
call `Singleton`

  alias this = getSingleon()

  //code for singleton...
}

Thanks in advance,
vladde

Re: Is this a good singleton?

[Vladde Nordholm via Digitalmars-d-learn]

On Sunday, 14 February 2016 at 07:16:54 UTC, Russel Winder wrote:
On Sat, 2016-02-13 at 18:58 +, Vladde Nordholm via 
Digitalmars-d- learn wrote:

[...]


Following the ACCU consensus: there is never, ever a good 
Singleton or reason to contemplate using one.


Obviously though there are some good ones: about dialogues in 
GUIs for example.


The good/evil-ness of Singleton is definitely in it's use: most 
people use Singleton wrongly, most uses should be banned. Hence 
the ACCU consensus.


It's all about coupling and mostly testability of code..


Thanks. I'm using David Simcha's singleton now.

Is this a good singleton?

[Vladde Nordholm via Digitalmars-d-learn]

Hello. I have this singleton,

--
class Singleton
{
private this() {}
static __gshared typeof(this) instance = new this;
}
--

and I wonder if it has any weaknesses. Or is there a better way 
to make a Singleton?


,vladde,

Re: Compare types with `static if` in template function.

[Vladde Nordholm via Digitalmars-d-learn]

On Wednesday, 29 July 2015 at 22:40:08 UTC, Ali Çehreli wrote:

You seem to be using type names instead of member names:

static if(is(typeof(c) == dchar) || is(typeof(c) == 
char))

{
slots[xy.y][xy.x].character = c;
}
else if(is(typeof(c) == fg))
{
slots[xy.y][xy.x].fg = c;

Should be

... color = c;

}
else if(is(typeof(c) == bg))
{
slots[xy.y][xy.x].bg = c;

... background = c;

}
else if(is(typeof(c) == md))
{
slots[xy.y][xy.x].md = c;

... mode = c;

}

Ali


Thank you! This was a mistake on my end. Really glad you spotted 
it, saved me quite some headaches!