Re: [Boost-users] [Singleton] pre-review question

From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2008-01-23 06:41:21

Ovanes Markarian wrote:
> Hello,
> 
> I am currently evaluating boost.singleton for our application. I hope it 
> is not too late to write a review. As I understood from the docs, 
> Singleton instance is immediately (when all global and static variables 
> are initilized) created. In our context we need singleton to be created 
> on first request (as it is described in GoF).

Singleton is created on demand.

> 
> The problem is following: Our application must parse config file which 
> is accessible after entering main and store the options/parameters 
> parsed in a singleton class. If I initialize singleton immediately 
> (before entering main) I can not parse command line options and have to 
> trick around with some additional functions which do it for me (but a 
> constructor would be a much better choice, when I try for the first time 
> to access the singleton).
> 
> 
> Is that possible with the current implementation? 

I think so.

Regards,
Tobias