Question

我们创立并填写了一些<代码>std:vector<uchar> with openCV imencode<>,<>>. 我们现在想把它例如纳入一些http://www.cplus.com/vis/iostream/ostream/“rel=“noretinger”>ostream(ostringstream)中,或者我们只是想在把我们的节目与溪流分开时加以挽救。因此,我想知道如何将<代码>std:vector<uchar>纳入std:ostream?

Answer 1

http://www.cplus.com/fer/iostream/ostream/write/“write::

void send_data(std::ostream & o, const std::vector<uchar> & v)
{
  o.write(reinterpret_cast<const char*>(v.data()), v.size());
}

The ostream expects naked chars, but it s fine to treat uchars as those by casting that pointer. On older compilers you may have to say &v[0] instead of v.data().

You can return the result of write() as another std::ostream& or as a bool if you like some error checking facilities.

Answer 2

根据您对产出格式的希望,您可结合<代码>copy使用。

#include <iterator>

/*...*/

copy( v.begin(), v.end(), ostream_iterator<uchar>(my_stream,"") );

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