rename chapters

Chapter17/cib/libs/stdx/ranges.hpp

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+#pragma once
+
+#include <iterator>
+
+namespace stdx {
+inline namespace v1 {
+
+#if __cplusplus < 202002L
+
+// NOLINTBEGIN(bugprone-macro-parentheses, cppcoreguidelines-macro-usage)
+#define DETECTOR(name, expr)                                                   \
+    namespace detail::detect {                                                 \
+    template <typename T, typename = void> constexpr auto name = false;        \
+    template <typename T>                                                      \
+    constexpr auto name<T, std::void_t<decltype(expr)>> = true;                \
+    }
+// NOLINTEND(bugprone-macro-parentheses, cppcoreguidelines-macro-usage)
+
+DETECTOR(range_begin, (std::begin(std::declval<T &>())))
+DETECTOR(range_end, (std::end(std::declval<T &>())))
+
+template <typename T>
+constexpr auto range =
+    detail::detect::range_begin<T> and detail::detect::range_end<T>;
+
+#undef DETECTOR
+
+#else
+
+template <typename T>
+concept range = requires(T &t) {
+    std::begin(t);
+    std::end(t);
+};
+
+#endif
+
+} // namespace v1
+} // namespace stdx