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add unwrap_or to result

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ToruNiina
2018-12-13 01:28:55 +09:00
parent 2080b30110
commit 901c299c40
1 changed files with 19 additions and 0 deletions
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19
toml/result.hpp
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@@ -394,6 +394,25 @@ struct result
return std::move(this->succ.value); return std::move(this->succ.value);
} }
template<typename U>
value_type& unwrap_or(U& opt) &
{
if(is_err()) {return opt;}
return this->succ.value;
}
template<typename U>
value_type const& unwrap_or(U const& opt) const&
{
if(is_err()) {return opt;}
return this->succ.value;
}
template<typename U>
value_type&& unwrap_or(U&& opt) &&
{
if(is_err()) {return std::move(opt);}
return std::move(this->succ.value);
}
error_type& unwrap_err() & error_type& unwrap_err() &
{ {
if(is_ok()) {throw std::runtime_error("toml::result: bad unwrap_err");} if(is_ok()) {throw std::runtime_error("toml::result: bad unwrap_err");}