+ /**
+ * Allow explicit construction of Range() from a std::array of a
+ * convertible type.
+ *
+ * For instance, this allows constructing StringPiece from a
+ * std::array<char, N> or a std::array<const char, N>
+ */
+ template <
+ class T,
+ size_t N,
+ typename = typename std::enable_if<
+ std::is_convertible<const T*, Iter>::value>::type>
+ constexpr explicit Range(const std::array<T, N>& array)
+ : b_{array.empty() ? nullptr : &array.at(0)},
+ e_{array.empty() ? nullptr : &array.at(0) + N} {}
+ template <
+ class T,
+ size_t N,
+ typename =
+ typename std::enable_if<std::is_convertible<T*, Iter>::value>::type>
+ constexpr explicit Range(std::array<T, N>& array)
+ : b_{array.empty() ? nullptr : &array.at(0)},
+ e_{array.empty() ? nullptr : &array.at(0) + N} {}
+
+ Range& operator=(const Range& rhs) & = default;
+ Range& operator=(Range&& rhs) & = default;
+