Subject: Re: [boost] Pimpl Again?
From: Vladimir Batov (Vladimir.Batov_at_[hidden])
Date: 2016-06-09 20:11:31
On 06/10/2016 04:59 AM, Emil Dotchevski wrote:
>> ... The defining property of the
>> pimpl idiom is that the private implementation type is left
>> incomplete in
>> the interface: the pointer is opaque...
Just happened to re-read Gamma's "Design Patterns". The Bridge
section... which is the Pimpl...
There the "hide the implementation" is mentioned in the Applicability
section, i.e. what the pattern is good for... i.e. it's not the
pattern's property... it's "only" its applicability... in the context of
As for copy-on-write, then Gamma et al explicitly mention it... in the
Proxy pattern... which they position separately from Bridge... they do
not even mention it in the Related Section... which to me is a bit too
subtle... but admittedly subtlety is not my strong suit.
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