Andrzej Krzemienski 44d57a1d8b Fix: prevented the binding illegal temporary to optional<const int&> ...

Older MSVC versions add illegal temporary when you want to assign from const integral value.

2016-02-19 00:25:54 +01:00

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optional_reference_binding.html

Fix: prevented the binding illegal temporary to optional<const int&>

2016-02-19 00:25:54 +01:00