Re: Cast operation or string conversion?
Giuseppe:G: wrote:
Hi Victor, thanks. Please find my replies below.
Victor Bazarov wrote:
A pair of size_t objects is *most likely* bigger than an unsigned int.
You cannot dynamic_cast anything except pointers to polymorphic
classes. That means the approach you're describing is not going to work.
I would say convert your tuple into a string using hexadecimal or some
other notation and pass the pointer to that string to your 'observe'
function.
Would you be so kind to show me a practical example on how I achieve this?
Something like
#include <string>
#include <sstream>
#include <limits>
#include <iomanip>
#include <iostream>
#include <ostream>
std::string to_string(std::size_t one, std::size_t two)
{
std::ostringstream os;
std::streamsize size = std::numeric_limits<size_t>::digits / 4;
os << std::hex << std::setw(size) << std::setfill('0') << one;
os << std::hex << std::setw(size) << std::setfill('0') << two;
return os.str();
}
int main()
{
std::size_t one = 0x123, two = 0xabc;
std::cout << to_string(one, two) << std::endl;
}
[..]
V
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