std::basic_string::operator[] – cppreference.com

std::basic_string::operator[]

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<metanoindex/>

 
C++
 
Strings Bibliothek
Null-terminierte Strings
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Null-terminated strings
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Byte-Strings
Multibyte-Strings
Wide Strings
Classes
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Classes
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basic_string
char_traits
 
std::basic_string
Member-Funktionen
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Member functions
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basic_string::basic_string
basic_string::operator=
basic_string::assign
basic_string::get_allocator
Elementzugriff zerstört
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Element access
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basic_string::at
basic_string::operator[]
basic_string::front(C++11)
basic_string::back(C++11)
basic_string::data
basic_string::c_str
Iteratoren
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Iterators
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basic_string::begin
basic_string::cbegin
(C++11)
basic_string::end
basic_string::cend
(C++11)
basic_string::rbegin
basic_string::crbegin
(C++11)
basic_string::rend
basic_string::crend
(C++11)
Kapazität
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Capacity
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basic_string::empty
basic_string::size
basic_string::length
basic_string::max_size
basic_string::reserve
basic_string::capacity
basic_string::shrink_to_fit(C++11)
Operations
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Operations
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basic_string::clear
basic_string::insert
basic_string::erase
basic_string::push_back
basic_string::pop_back(C++11)
basic_string::append
basic_string::operator+=
basic_string::compare
basic_string::replace
basic_string::substr
basic_string::copy
basic_string::resize
basic_string::swap
Suchen
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Search
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basic_string::find
basic_string::rfind
basic_string::find_first_of
basic_string::find_first_not_of
basic_string::find_last_of
basic_string::find_last_not_of
Konstanten
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Constants
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basic_string::npos
Non-Member-Funktionen
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Non-member functions
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operator+
operator==
operator!=
operator<
operator>
operator<=
operator>=
swap(std::basic_string)
operator<<
operator>>
getline
stoi
stol
stoll		(C++11)
(C++11)
(C++11)
stoul
stoull		(C++11)
(C++11)
stof
stod
stold		(C++11)
(C++11)
(C++11)
to_string(C++11)
to_wstring(C++11)
Helper-Klassen
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Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>		(C++11)
 
<tbody> </tbody>
reference operator[]( size_type pos );
const_reference operator[]( size_type pos ) const;
Gibt einen Verweis auf den Charakter an der angegebenen Stelle pos. Keine Grenzen Überprüfung durchgeführt wird .
Original:
Returns a reference to the character at specified location pos. No bounds checking is performed.
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If pos==size(),

  • Die const-Version liefert eine Referenz auf das Zeichen mit dem Wert CharT() (das Null-Zeichen). (bis C + +11)
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    The const version returns a reference to the character with value CharT() (the null character). (bis C + +11)
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  • Beide Versionen gibt einen Verweis auf den Charakter mit dem Wert CharT() (das Null-Zeichen). Ändern der NULL-Zeichen durch nicht-const-Referenz Ergebnisse in undefiniertem Verhalten. (seit C++11)
    Original:
    Both versions returns a reference to the character with value CharT() (the null character). Modifying the null character through non-const reference results in undefined behavior. (seit C++11)
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Parameter

pos -
Position des Charakters, um zurückzukehren
Original:
position of the character to return
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Rückgabewert

Verweis auf die angeforderten Charakter
Original:
reference to the requested character
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Komplexität

Constant
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Constant
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Siehe auch