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Improvement to "cout << none" implementation

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This commit is contained in:
Andrzej Krzemienski
2014-11-24 22:53:59 +01:00
parent f8bbb9fabb
commit 0d06d66f5c
2 changed files with 36 additions and 11 deletions
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10
include/boost/optional/optional_io.hpp
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@ -28,8 +28,12 @@ inline
std::basic_ostream<CharType, CharTrait>&
operator<<(std::basic_ostream<CharType, CharTrait>& out, none_t const&)
{
if (out.good())
{
out << "--";
return out;
}
return out;
}
template<class CharType, class CharTrait, class T>
@ -37,9 +41,9 @@ inline
std::basic_ostream<CharType, CharTrait>&
operator<<(std::basic_ostream<CharType, CharTrait>& out, optional<T> const& v)
{
if ( out.good() )
if (out.good())
{
if ( !v )
if (!v)
out << "--" ;
else out << ' ' << *v ;
}