Re: Top 10 most common hard skills listed on resumes...

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=