uid.hh

Go to the documentation of this file.

#pragma once
 
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <string>
 
namespace Dune::Vtk
{
  inline std::string uid (std::size_t len = 8)
  {
    static const auto digits = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    static const int N = std::strlen(digits);
 
    std::string id(len,' ');
    for (std::size_t i = 0; i < len; ++i)
      id[i] = digits[std::rand()%N];
 
    return id;
  }
 
} // end namespace Dune::Vtk