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From: Thiago Adams <thiago.adams@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Top 10 most common hard skills listed on resumes...
Date: Wed, 28 Aug 2024 11:04:05 -0300
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On 28/08/2024 10:52, Thiago Adams wrote:
> On 28/08/2024 10:45, Bonita Montero wrote:
>> Am 28.08.2024 um 15:35 schrieb Thiago Adams:
>>
>>> In C you learn how to write less code.
>>
>> You do th same in C, but manually.
>>
>>> RAII, destructor, constructor is a bad idea, but I don't know if it 
>>> is a good place to talk about it. I also don't know if I will be able 
>>> to convince you.
>>
>> If you have a allocated resource you've to deallocate it at the end of
>> the scope. In C you do that error-prone with goto-orgies like in the
>> Linux-kernel. In C++ there's no goto necessary and the resulting code
>> is the same.
> 
> 
> You have to deallocate only if the ownership still with the same object.
> This is not the case when the object is moved.
> 
>>> One problem of RAII and destructor we cannot disable it.
>>
>> If you've got to deallocate the memory you need the destructor.
>> If you move your container elsewhere and the compiler sees that
>> the destructor is opimized away for the non-exception code-path.
> 
> To create view object you need a new object because destructor cannot be 
> disabled.
> 
> For instance
> 
> X x;
> ViewX x; //no destructor here..
> 
> etc..
> 
>>> By the way, in C++ we cannot move const objects. This is ridiculous.
>>
>> Const-objects are there not to be modified. If you've got logical
>> constness you can cast away the const with const_cast and move its
>> contents. But casting away const is unclean mostly in C and C++.
> 
> 
> excuses..
> 

This sample (in cake) shows how I can move from const objects and how I 
don't need the concept of destructor and how it is safer than C++ RAII 
(because the fixes don't depend on programmer reading guidelines)

http://thradams.com/cake/playground.html?code=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%2BbmFtZSA9IHRlbXA7DQogICAgfQ0KICAgIHJldHVybiBwOw0KfQ0KDQppbnQgbWFpbigpDQp7DQogICBfT3B0IHN0cnVjdCBYIHggPSB7fTsNCiAgIGNvbnN0IHN0cnVjdCBYICogX093bmVyIF9PcHQgcCA9IG1ha2UoIm5hbWUiKTsNCiAgIGlmIChwKXsNCiAgICAgeCA9ICpwOw0KICAgICBmcmVlKHApOw0KICAgfQ0KICAgZnJlZSh4Lm5hbWUpOw0KfQ%3D%3D&to=-1&options=