21 Strings library [strings]

21.3 String classes [string.classes]

21.3.2 Class template basic_­string [basic.string]

21.3.2.6 Modifiers [string.modifiers]

21.3.2.6.3 basic_­string​::​assign [string.assign]

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constexpr basic_string& assign(const basic_string& str);
1
#
Effects: Equivalent to: return *this = str;
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constexpr basic_string& assign(basic_string&& str) noexcept(allocator_traits<Allocator>::propagate_on_container_move_assignment::value || allocator_traits<Allocator>::is_always_equal::value);
2
#
Effects: Equivalent to: return *this = std​::​move(str);
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constexpr basic_string& assign(const basic_string& str, size_type pos, size_type n = npos);
3
#
Effects: Equivalent to: 
return assign(basic_string_view<charT, traits>(str).substr(pos, n));
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template<class T> constexpr basic_string& assign(const T& t);
4
#
Constraints:
  • (4.1)
    is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • (4.2)
    is_­convertible_­v<const T&, const charT*> is false.
5
#
Effects: Equivalent to: 
basic_string_view<charT, traits> sv = t;
return assign(sv.data(), sv.size());
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template<class T> constexpr basic_string& assign(const T& t, size_type pos, size_type n = npos);
6
#
Constraints:
  • (6.1)
    is_­convertible_­v<const T&, basic_­string_­view<charT, traits>> is true and
  • (6.2)
    is_­convertible_­v<const T&, const charT*> is false.
7
#
Effects: Equivalent to: 
basic_string_view<charT, traits> sv = t;
return assign(sv.substr(pos, n));
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constexpr basic_string& assign(const charT* s, size_type n);
8
#
Preconditions: [s, s + n) is a valid range.
9
#
Effects: Replaces the string controlled by *this with a copy of the range [s, s + n).
10
#
Returns: *this.
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constexpr basic_string& assign(const charT* s);
11
#
Effects: Equivalent to: return assign(s, traits​::​length(s));
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constexpr basic_string& assign(initializer_list<charT> il);
12
#
Effects: Equivalent to: return assign(il.begin(), il.size());
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constexpr basic_string& assign(size_type n, charT c);
13
#
Effects: Equivalent to: 
clear();
resize(n, c);
return *this;
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template<class InputIterator> constexpr basic_string& assign(InputIterator first, InputIterator last);
14
#
Constraints: InputIterator is a type that qualifies as an input iterator ([container.requirements.general]).
15
#
Effects: Equivalent to: return assign(basic_­string(first, last, get_­allocator()));