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Subject: Re: [boost] Formal Review Request: TypeErasure
From: Sebastian Redl (sebastian.redl_at_[hidden])
Date: 2012-06-08 06:20:35

On 07.06.2012 21:08, Nevin Liber wrote:
> On 7 June 2012 13:41, Dave Abrahams<dave_at_[hidden]> wrote:
>> In a nutshell, concept-based-runtime-polymorphism/type-erasure allows
>> you to have runtime polymorphism while preserving value semantics. The
>> value of that win is very commonly underestimated.
> +1
> So, is there a language feature that could be added to C++17 that would
> make implementing type erasure easier?
Compile-time reflection and declaration-injection.

struct S {
  void one();
  void two();

any<S> anyS = FooThatLooksLikeS();

The any template would inspect the declarations of S and inject its own
type-erased implementation of the same.


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