I thought I would try it and I found it... superfluous. 
What am I missing? All it seems to be is a wrapper surrounding a standard C array. It doesn't seem extend array functionality beyond what is already possible in C/C++, Why include a file and have to compile a couple hundred lines of code when "std::array<int,10> a;" is equivalent to "int a[10];"? Very Rube Goldberg-ish.
I am assuming there is a point to this?
Try passing int a[10] to a function and getting its size ;)
Also, you can do something like this:
template <typename T>
T doubleData(const T& v)
{
T data = v; // Can't do this with an int a[10]
for (typename T::value_type& value : data) // int a[10] certainly has no ::value_type member type
value *= 2;
return data; // Can't do this with an int a[10] either!
}
// You can call the above function with std::vector, std::array, etc., but not with int a[10]!
Edit: Also, check out this article
Edit edit: good catch, Brother Bob!
Try passing int a[10] to a function and getting its size
You can do something like this:Edit: Also, check out this articletemplate <typename T> void printAll(const T& v) { for (auto& value : v) std::cout << value << std::endl; } // You can call the above function with std::vector, std::array, etc., but not with int a[10]!
You may want to reconsider that example. The array is passed by reference and for for-each statement works with array types, so you can in fact pass an array and have it print all its values.
You may want to reconsider that example. The array is passed by reference and for for-each statement works with array types, so you can in fact pass an array and have it print all its values.
Heh, good catch. The first time I wrote it I used typename T::value_type, so arrays didn't work. My simplification broke my example 
I'll fix it up...
Try passing int a[10] to a function and getting its size
You mean like this?
template <class T, int N>
void printSizeOfArray(const T (&)[N])
{
std::cout << N << std::endl;
}Try passing int a[10] to a function and getting its size
You mean like this?template <class T, int N> void printSizeOfArray(const T (&)[N]) { std::cout << N << std::endl; }
Exactly. I wasn't saying you couldn't, but now you've just written the ugly code yourself instead of using std::array. The ugly code has got to live somewhere. You might as well let it live outside of your own code. It's even uglier if you're passing multiple array structures.
