Re: Best structure for a "data buffer".
mzdude wrote:
On Aug 25, 12:41 pm, Victor Bazarov <v.Abaza...@comAcast.net> wrote:
Barzo wrote:
I have some data readed from binary files (In my case are audio file)
and I have to store in a temp "buffer" the data readed with a function
like:
File->ReadFileChunk(T buffer_ptr*, const int items_to_read);
I'm thinking to use a structure like an std::vector<T> because I think
it is more simple to manage instead of a simple T buffer[] array;
But, is there a way to store a T* buffer into a vector (and the
opposite) in only-one "copy" operation?
// given that 'buffer' is
T *buffer;
...
// and you know what the number of elements in it is
int items_read = ... ;
// then you can construct a vector of those like so
std::vector<T> my_vector(buffer, buffer + items_read);
Why not read directly into the vector?
std::vector<T> myVector(items_to_read); // Create space
File->ReadChunk( &myVector[0], items_to_read );
That's fine too, if 'T' has a default c-tor.
V
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