Implement P1209 - Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20. Reviewed as https://reviews.llvm.org/D55532
llvm-svn: 349178
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: f60c63c090114a6b5f0ba0a7aacd67e6c92920e7
diff --git a/include/string b/include/string
index 4dd6ddc..fb838d1 100644
--- a/include/string
+++ b/include/string
@@ -437,6 +437,11 @@
basic_istream<charT, traits>&
getline(basic_istream<charT, traits>& is, basic_string<charT, traits, Allocator>& str);
+template<class charT, class traits, class Allocator, class U>
+void erase(basic_string<charT, traits, Allocator>& c, const U& value); // C++20
+template<class charT, class traits, class Allocator, class Predicate>
+void erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred); // C++20
+
typedef basic_string<char> string;
typedef basic_string<wchar_t> wstring;
typedef basic_string<char16_t> u16string;
@@ -4276,6 +4281,18 @@
#endif // _LIBCPP_CXX03_LANG
+#if _LIBCPP_STD_VER > 17
+template<class _CharT, class _Traits, class _Allocator, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+void erase(basic_string<_CharT, _Traits, _Allocator>& __str, const _Up& __v)
+{ __str.erase(_VSTD::remove(__str.begin(), __str.end(), __v), __str.end()); }
+
+template<class _CharT, class _Traits, class _Allocator, class _Predicate>
+inline _LIBCPP_INLINE_VISIBILITY
+void erase_if(basic_string<_CharT, _Traits, _Allocator>& __str, _Predicate __pred)
+{ __str.erase(_VSTD::remove_if(__str.begin(), __str.end(), __pred), __str.end()); }
+#endif
+
#if _LIBCPP_DEBUG_LEVEL >= 2
template<class _CharT, class _Traits, class _Allocator>