I have this code which is based on several posts in SO:
boost::uuids::uuid uuid = boost::uuids::random_generator()();
auto uuidString= boost::lexical_cast<std::string>(uuid);
but when I am compiling this code, I am getting this error:
Source type is neither std::ostream`able nor std::wostream`able C:\Local\boost\boost\lexical_cast\detail\converter_lexical.hpp
How can I fix this error?
You're missing the include, I guess:
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#include <boost/lexical_cast.hpp>
#include <boost/uuid/uuid_io.hpp>
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/random_generator.hpp>
int main() {
boost::uuids::uuid uuid = boost::uuids::random_generator()();
auto uuidString = boost::lexical_cast<std::string>(uuid);
}
You could try:
std::stringstream ss;
std::string uuidStr;
boost::uuids::uuid uuid = boost::uuids::random_generator()();
ss << uuid;
ss >> uuidStr;
The Documentation states:
Stream Operators
The standard input and output stream operators << and >> are provided by including boost/uuid/uuid_io.hpp. The string representation of a uuid is hhhhhhhh-hhhh-hhhh-hhhh-hhhhhhhhhhhh where h is a hexidecimal digit.
boost::uuids::uuid u1; // initialize uuid
std::stringstream ss;
ss << u1;
boost::uuids::uuid u2;
ss >> u2;
assert(u1, u2);
However the lexical_cast
should work as well.
Maybe you should check what uuid
actually contains to figure out if there's something wrong with the generated uuid
.
Also:
boost::uuids::uuid u; // initialize uuid
std::string s1 = to_string(u);
should be slightly faster according to the doc.
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