It would be great, if there could be singleton class inside language. Or is there?

singleton SFoo
{
this();
}


..

SFoo a();
SFoo b();

if (&a==&b) // this would be true

turpeine@lut.fi wrote:
> It would be great, if there could be singleton class inside language. Or is
> there?

Would you care to elaborate on the merits of having an in-built singleton class?

Also, (in general,) for such things to become a part of the language, there would have to be reasons like:

- hard to work around
- brittleness of work around
- major usefulness of new syntax
- substantial increase of stability/clearness of written code

or other weighty issues.

There may be some, but you'd have to explain them. (At least to thickies like me. :-) )

turpeine@lut.fi wrote:
> It would be great, if there could be singleton class inside language. Or is
> there?

Here's the way I would do it, using current syntax:

###################################################

class MySingleton {

  public static Object myObject = null;

  static {
    // perform some sort of initialization on myObject
  }

  // Private ctor prevents object from direct instantiation
  private MySingleton() {}

  public static getSingletor() {
    return myObject;
  }
}

###################################################

What's wrong with that?

A singleton is a simple pattern (like a factory) that can be **easily** implemented, without changing the language at all.

--BenjiSmith