Subject: Re: [boost] Is there any interest in static constructors?
From: Mateusz Loskot (mateusz_at_[hidden])
Date: 2013-02-01 13:08:57
On 1 February 2013 17:09, Alexander Stoyan <alexander.stoyan_at_[hidden]> wrote:
> Hello Mathias,
> I'm afraid you didn't get the point. Let me explain.
Without walking through the implementation in details, I didn't get
it at first sight either.
>>> The object will only be constructed when instance() is called
> Technically, yes, the instance will be create once singleton::instance is
> called for the first time, but in order to make it constructed BEFORE main,
> singleton::instance has to be called during static data initialization, and
> static_init GUARANTIES that this static initialization will be performed
> before main WITH NO additional calls.
IMHO, the problem is, that you don't explain this important point
in your blog (which I assume serves documentation purpose).
The three crucial principles of the idea seem to be as follows:
1. singleton::instance is called during static initialisation.
2. static_unit guarantees that the requirement 1. is fulfilled.
3. static_unit realises the guarantee by...
But, they don't stand out from your blog clearly.
-- Mateusz Loskot, http://mateusz.loskot.net
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