Different array declaration

[dekeenfrance]

Hi,

I would like to know the difference between the following two forms of array declaration:

(1)double myArray[3] = {1.0, 2.0, 3.0};

(2)array<double,3> myArray = {1.0, 2.0, 3.0};

If I say the second one allows to use different functions like .begin(), am I right? Is there any other difference between these two declaration?

Thanks in advance.

[Darkmaster]

http://www.cplusplus.com/doc/tutorial/arrays/
http://www.cplusplus.com/reference/array/array/

[vlad from moscow]

They have different types. The first one is indeed an array. The second one is a template class that includes an array as its data member.

[vlad from moscow]

You mentioned already yourself that functionality of the second declaration is more rich than the first. Moreover it is compatible with the interfaces of other standard containers.

[dekeenfrance]

Thank you for your prompt reply.

Is there a difference in terms of size of memory occupation and speed of execution between these two?

[vlad from moscow]

The both occupy the same size in memory because the only data member of the template declaration is an ordinary array. And I do not see any difference in the speeds.

[dekeenfrance]

OK, thank you for the information!