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| -rw-r--r-- | lib/collections.hpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/collections.hpp b/lib/collections.hpp index 2b83500..59cec6f 100644 --- a/lib/collections.hpp +++ b/lib/collections.hpp @@ -117,3 +117,18 @@ materializeRange(const std::pair<In, In> & in) { return Rtn(in.first, in.second); } + +template<typename T> struct pair_range { + constexpr auto & + begin() const noexcept + { + return pair.first; + } + constexpr auto & + end() const noexcept + { + return pair.second; + } + const std::pair<T, T> & pair; +}; +template<typename T> pair_range(std::pair<T, T>) -> pair_range<T>; |