// string_view standard header // Copyright (c) Microsoft Corporation. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #pragma once #ifndef _STRING_VIEW_ #define _STRING_VIEW_ #include #if _STL_COMPILER_PREPROCESSOR #if !_HAS_CXX17 #pragma message("The contents of are available only with C++17 or later.") #else // ^^^ !_HAS_CXX17 / _HAS_CXX17 vvv #include #endif // _HAS_CXX17 #endif // _STL_COMPILER_PREPROCESSOR #endif // _STRING_VIEW_