std::basic_string::at — cppreference.com
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    std::basic_string::at

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    <metanoindex/>

     
    C++
     
    Bibliothèque de chaînes de caractères
    Chaînes à zéro terminal
    Original:
    Null-terminated strings
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    Les chaînes d'octets
    Chaines multi-octets
    Les chaînes étendues
    Classes
    Original:
    Classes
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    basic_string
    char_traits
     
    std::basic_string
    Les fonctions membres
    Original:
    Member functions
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    basic_string::basic_string
    basic_string::operator=
    basic_string::assign
    basic_string::get_allocator
    Elément d'accès
    Original:
    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
    Les itérateurs
    Original:
    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)
    Capacité
    Original:
    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)
    Opérations
    Original:
    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
    Recherche
    Original:
    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
    Constantes
    Original:
    Constants
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    basic_string::npos
    Tiers fonctions
    Original:
    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)
    Classes d'aide
    Original:
    Helper classes
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    hash<std::string>
    hash<std::wstring>
    hash<std::u32string>
    hash<std::u16string>    		 (C++11)
     
    <tbody> </tbody>
    reference at( size_type pos );
    const_reference at( size_type pos ) const;
    Renvoie une référence au caractère à pos emplacement spécifié. La vérification des limites est effectué, sauf std::out_of_range type sera jeté sur l'accès invalide .
    Original:
    Returns a reference to the character at specified location pos. Bounds checking is performed, exception of type std::out_of_range will be thrown on invalid access.
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    Paramètres

    pos -
    position du caractère à retourner
    Original:
    position of the character to return
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    Retourne la valeur

    référence au caractère requis
    Original:
    reference to the requested character
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    Exceptions

    jette std::out_of_range si pos >= size()
    Original:
    throws std::out_of_range if pos >= size()
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    Complexité

    Constante
    Original:
    Constant
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