Do we really need this to be standardized?

#include <cstdio>

template<class E>
struct ScopeExit{
ScopeExit(E e) : e(e){}


E e;

int main(){
ScopeExit guard([](){ printf("hi!\n"); });

On Tue, Aug 3, 2021 at 3:22 PM Andrey Semashev via Std-Proposals <> wrote:
On 8/3/21 3:08 PM, Jens Maurer via Std-Proposals wrote:
> On 03/08/2021 11.46, Baruch Burstein via Std-Proposals wrote:
>> Hi.
>> Why is there no generic scope guard in the standard library?
>> I am sure there must have been such a proposal before, probably with an explanation of why it was not accepted, but I couldn't find it.
> Try std::unique_ptr with a custom deleter.

This only works for pointers. I wish Boost.ScopeExit was transformed
into a language feature.
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