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Implement stream operator<< in terms of the faster to_string() method.

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Riccardo Corsi 2021-12-23 10:56:25 +01:00
parent 7a3e380c21
commit b6f1515be5
1 changed files with 1 additions and 29 deletions
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30
include/uuid.h
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@ -552,35 +552,7 @@ namespace uuids
template <class Elem, class Traits> template <class Elem, class Traits>
std::basic_ostream<Elem, Traits> & operator<<(std::basic_ostream<Elem, Traits> &s, uuid const & id) std::basic_ostream<Elem, Traits> & operator<<(std::basic_ostream<Elem, Traits> &s, uuid const & id)
{ {
// save current flags s << to_string(id);
std::ios_base::fmtflags f(s.flags());
// manipulate stream as needed
s << std::hex << std::setfill(static_cast<Elem>('0'))
<< std::setw(2) << static_cast<int>(id.data[0])
<< std::setw(2) << static_cast<int>(id.data[1])
<< std::setw(2) << static_cast<int>(id.data[2])
<< std::setw(2) << static_cast<int>(id.data[3])
<< '-'
<< std::setw(2) << static_cast<int>(id.data[4])
<< std::setw(2) << static_cast<int>(id.data[5])
<< '-'
<< std::setw(2) << static_cast<int>(id.data[6])
<< std::setw(2) << static_cast<int>(id.data[7])
<< '-'
<< std::setw(2) << static_cast<int>(id.data[8])
<< std::setw(2) << static_cast<int>(id.data[9])
<< '-'
<< std::setw(2) << static_cast<int>(id.data[10])
<< std::setw(2) << static_cast<int>(id.data[11])
<< std::setw(2) << static_cast<int>(id.data[12])
<< std::setw(2) << static_cast<int>(id.data[13])
<< std::setw(2) << static_cast<int>(id.data[14])
<< std::setw(2) << static_cast<int>(id.data[15]);
// restore original flags
s.flags(f);
return s; return s;
} }