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std::forward_list::before_begin, std::forward_list::cbefore_begin

De cppreference.com

 
 
 
std::forward_list
Les fonctions membres
Original:
Member functions
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forward_list::forward_list
forward_list::~forward_list
forward_list::operator=
forward_list::assign
forward_list::get_allocator
Elément d'accès
Original:
Element access
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forward_list::front
Les itérateurs
Original:
Iterators
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forward_list::before_begin
forward_list::cbefore_begin
forward_list::begin
forward_list::cbegin
forward_list::end
forward_list::cend
Capacité
Original:
Capacity
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forward_list::empty
forward_list::max_size
Modificateurs
Original:
Modifiers
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forward_list::clear
forward_list::insert_after
forward_list::emplace_after
forward_list::erase_after
forward_list::push_front
forward_list::emplace_front
forward_list::pop_front
forward_list::resize
forward_list::swap
Opérations
Original:
Operations
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forward_list::merge
forward_list::splice_after
forward_list::remove
forward_list::remove_if
forward_list::reverse
forward_list::unique
forward_list::sort
 
iterator before_begin();
(depuis C++11)
const_iterator before_begin() const;
(depuis C++11)
const_iterator cbefore_begin() const;
(depuis C++11)
Retourne un itérateur à l'élément avant le premier élément du conteneur. Cet élément agit comme un espace réservé, tente d'y accéder en résulte un comportement indéfini. Les cas d'utilisation sont uniquement des fonctions insert_after(), emplace_after(), erase_after(), splice_after() et l'opérateur d'incrémentation: incrémentation de la commencer avant itérateur iterator donne exactement le même obtenu à partir begin() / cbegin() .
Original:
Returns an iterator to the element before the first element of the container. This element acts as a placeholder, attempting to access it results in undefined behavior. The only usage cases are in functions insert_after(), emplace_after(), erase_after(), splice_after() and the increment operator: incrementing the before-begin iterator gives exactly the same iterator as obtained from begin()/cbegin().
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Sommaire

[modifier] Paramètres

(Aucun)
Original:
(none)
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[modifier] Retourne la valeur

itérateur à l'élément avant le premier élément
Original:
iterator to the element before the first element
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[modifier] Exceptions

1-3)
noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Complexité

Constante
Original:
Constant
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[modifier] Voir aussi

retourne un itérateur au début
Original:
returns an iterator to the beginning
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(fonction membre publique) [edit]
retourne un itérateur à la fin
Original:
returns an iterator to the end
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(fonction membre publique) [edit]