playground

synopsis to test

basic_string& replace( size_type pos, size_type count, const basic_string& str ); (1) (until C++20) constexpr basic_string& replace( size_type pos, size_type count, const basic_string& str ); (constexpr since c++20) basic_string& replace( const_iterator first, const_iterator last, const basic_string& str ); (2) (until C++20) constexpr basic_string& replace( const_iterator first, const_iterator last, const basic_string& str ); (constexpr since c++20) basic_string& replace( size_type pos, size_type count, const basic_string& str, size_type pos2, size_type count2 ); (3) (until C++14) basic_string& replace( size_type pos, size_type count, const basic_string& str, size_type pos2, size_type count2 = npos ); (since C++14) (until C++20) constexpr basic_string& replace( size_type pos, size_type count, const basic_string& str, size_type pos2, size_type count2 = npos ); (since C++14)(constexpr since c++20) template< class InputIt > basic_string& replace( const_iterator first, const_iterator last, InputIt first2, InputIt last2 ); (4) (until C++20) template< class InputIt > constexpr basic_string& replace( const_iterator first, const_iterator last, InputIt first2, InputIt last2 ); (constexpr since c++20) basic_string& replace( size_type pos, size_type count, const CharT* cstr, size_type count2 ); (5) (until C++20) constexpr basic_string& replace( size_type pos, size_type count, const CharT* cstr, size_type count2 ); (constexpr since c++20) basic_string& replace( const_iterator first, const_iterator last, const CharT* cstr, size_type count2 ); (6) (until C++20) constexpr basic_string& replace( const_iterator first, const_iterator last, const CharT* cstr, size_type count2 ); (constexpr since c++20) basic_string& replace( size_type pos, size_type count, const CharT* cstr ); (7) (until C++20) constexpr basic_string& replace( size_type pos, size_type count, const CharT* cstr ); (constexpr since c++20) basic_string& replace( const_iterator first, const_iterator last, const CharT* cstr ); (8) (until C++20) constexpr basic_string& replace( const_iterator first, const_iterator last, const CharT* cstr ); (constexpr since c++20) basic_string& replace( size_type pos, size_type count, size_type count2, CharT ch ); (9) (until C++20) constexpr basic_string& replace( size_type pos, size_type count, size_type count2, CharT ch ); (constexpr since c++20) basic_string& replace( const_iterator first, const_iterator last, size_type count2, CharT ch ); (10) (until C++20) constexpr basic_string& replace( const_iterator first, const_iterator last, size_type count2, CharT ch ); (constexpr since c++20) basic_string& replace( const_iterator first, const_iterator last, std::initializer_list<CharT> ilist ); (11) (until C++20) constexpr basic_string& replace( const_iterator first, const_iterator last, std::initializer_list<CharT> ilist ); (constexpr since c++20) template < class T > basic_string& replace( size_type pos, size_type count, const T& t ); (12) (until C++20) template < class T > constexpr basic_string& replace( size_type pos, size_type count, const T& t ); (constexpr since c++20) template < class T > basic_string& replace( const_iterator first, const_iterator last, const T& t ); (13) (until C++20) template < class T > constexpr basic_string& replace( const_iterator first, const_iterator last, const T& t ); (constexpr since c++20) template < class T > basic_string& replace( size_type pos, size_type count, const T& t, size_type pos2, size_type count2 = npos ); (14) (until C++20) template < class T > constexpr basic_string& replace( size_type pos, size_type count, const T& t, size_type pos2, size_type count2 = npos ); (constexpr since c++20)

1. First
2. Second
3. Third
4. Fourth
5. Fifth
   • Fifth-1 [..c++20) (until C++20)
     • Fifth-1-a
     • Fifth-1-b [c++11..) (since C++11)
   • Fifth-2 [c++11..c++20) (since C++11)(until C++20)
     • Fifth-2-a
     • Fifth-2-a
   • Fifth-3 [..c++20) (until C++20)
     • Fifth-3-a
     • Fifth-3-a
   • Fifth-4
     • Fifth-4-a
     • Fifth-4-b [..c++20) (until C++20)
     • Fifth-4-b [c++14..c++20) (since C++14)(until C++20)

The potential scope of a name declared

• in the init-statement of a [[../for|for loop]],
• in the condition of a [[../for|for loop]],
• in the range_declaration of a [[../range-for|range-for loop]],
• in the init-statement of a [[../if|if statement]] or [[../switch|switch statement]],(since C++17)
• in the condition of a [[../if|if statement]], [[../switch|switch statement]], or [[../while|while loop]]

begins at the point of declaration and ends at the end of the controlled statement.

Deduction guides

(since C++17)

Deduction guides

(since C++17)

(a slightly optimized variation.)