[Driton Kuci]

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Does any know, if there is any extension (or plug-in) in Visual Studio or Visual Studio Code in order to generate the same outputs as CPP Insights (especialy, the template instantiations)?
Or maybe any other IDEs?

Thank you in advance!

[Driton Kuci]

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But that is my point, the destructor of Account is not virtual and in case of reference:
const Account& aRef = BankAccount(200.0);

Both destructors are invoked:
~BankAccount()
~Account()

Is my example not correct?

[Driton Kuci]

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Hi jleko,

initB() is called for t1( 10 ) because member variable std::string b has a default value (i.e., the return value of function initB() ).

In this case you provide the value only for member variable int a (i.e., 10), so no need to assign its default value (i.e., the return value of function initA() ).
But for member variable std::string b value is provided, thus compiler sets its default value.

You can have a look here: https://cppinsights.io/s/3a7243e2
Specially at lines: 20-22 and 26-28  where the Ctors are declared.

 

Best Regards,
Driton

[Driton Kuci]

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Hi Tobias,

thank you for your comments.

You are right, I could specialize the template functions outside the class definition and it would look like this: https://godbolt.org/z/fxqYjzv57

I am used to complete the template stuff within the class and the header file of course.

[Driton Kuci]

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Hi Tobias,
thank you for your hint.

It seems that it is an error/bug by IDE Visual Studio 2022 because I can compile and even run the application.
The warning messages show also the correct padding Bytes added at the end of the variables.

But the static_assert method remains red underlined and if you hover it, it shows the error message.
But, as I said, I can run the application and it shows the correct sizes:

sizeof( l ):   12
sizeof( l2 ): 8

[Driton Kuci]

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Hi Luiz,

should you not reserve as much memory as the number of elements you want to emplace in to the vector (to avoid reallocation)?

I mean:

std::vector<T> myVec;
myVec.reserve(1’000’000’000);
myVec.emplace_back(T(1’000’000’000));

[Driton Kuci]

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But, if both methods f1 and f2 can be used, which one should I prefer and implement?
By which method we get a higher profit (related to performance, speed, optimization, etc.)?

[Driton Kuci]

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But let say I need the whole vector at run-time, with all of its elements, even if they are more than thousand (maybe a bad design but I need it).
Let assume that vector occupies of 1kB memory.

1. Does this mean that the executable file has a larger size for 1kB, due to this vector?
2. Theoritically, if we need 10’000 such std::vectors (I know, it is bad design), does it mean that the executable file is 10’000 times larger?

 

[Driton Kuci]

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But the object mDoble3 will be initialized at run-time, correct?
How can static_assert and decltype evaluate the types/expression at compile-time for the object mDoble3?

[Driton Kuci]

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Did you forget the share the code ;-)?

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