Subject: Re: [boost] [interfaces] Boost Interface Library (2004?)
From: Daniel Larimer (dlarimer_at_[hidden])
Date: 2011-02-06 20:01:35
On Feb 6, 2011, at 5:58 PM, Edward Diener wrote:
> On 2/6/2011 4:18 PM, Joaquin M Lopez Munoz wrote:
>> Edward Diener<eldiener<at> tropicsoft.com> writes:
>>> On 2/6/2011 3:07 PM, Daniel Larimer wrote:
>>>> I recently ran across the unofficial Boost Interface Library
>>> How are is an interface any different than a C++ abstract class ?
>> As the concept is defined by the aforementioned library,
>> interfaces allow for dynamic duck typing.
It is not always possible to change the inheritance hierarchy of other types that you want to use in a polymorphic way. Sometimes you need to add a polymorphic interface to a class that you do not want a vtable for. Every method in an abstract class becomes a virtual dispatch even when most use cases do not require or cannot benefit from virtual dispatching.
All of those reasons aside, my interest in the subject is because I want to dynamically create stubs for RPC, scripting, etc and there is no way to do that via an abstract class.
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