Meyers-Singleton

[Chris Forone]

hello group,

is there a problem with meyers-singleton when defined in header-file?

example (someheader.h):

class a
{
static a& Instance() {static a instance; return instance;}
}

or can a static member not be implicit inline?

thx & hand, chris

[Chris Forone]

Alf P. Steinbach schrieb:

* Chris Forone:

>>
is there a problem with meyers-singleton when defined in header-file?

No.

>example (someheader.h):

class a
{
static a& Instance() {static a instance; return instance;}
}

If the class definition was corrected by adding the required semicolon,
the Instance member function would still be inaccessible because it's
private.

i have Instance() public, and semicolon in place...

>
If the above was not your actual code, then please read the FAQ item on
how to post a question about code that does not work.

no, i have written it... next time i will do it better!

>
Cheers, & hth.,

- Alf

thanks a lot, chris

[James Kanze]

On Dec 13, 9:36 am, Chris Forone <[e-mail]:

is there a problem with meyers-singleton when defined in
header-file?

example (someheader.h):

class a
{
static a& Instance() {static a instance; return instance;}
}

or can a static member not be implicit inline?

There's no problem as far as the language is concerned, but it's
a good way to make maintenance intolerable and introduce
additional source code coupling.

--
James Kanze (GABI Software) email:ja*********@gmail.com
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