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add test optional

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This commit is contained in:
bolero-MURAKAMI 2012-10-27 15:37:39 +09:00
parent f9d8908f95
commit 5aa4cf8cbe
5 changed files with 338 additions and 13 deletions
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6
sprout/utility/value_holder/value_holder.hpp
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@ -138,8 +138,10 @@ namespace sprout {
private:
holder_type holder_;
public:
value_holder() = default;
value_holder(value_holder const&) = default;
SPROUT_CONSTEXPR value_holder()
: holder_()
{}
SPROUT_CONSTEXPR value_holder(value_holder const&) = default;
explicit SPROUT_CONSTEXPR value_holder(param_type p)
: holder_(helper_type::hold(p))
{}