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std::list::unique

De cppreference.com
< cpp‎ | container‎ | list

 
 
 
std::list
Les fonctions membres
Original:
Member functions
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list::list
list::~list
list::operator=
list::assign
list::get_allocator
Elément d'accès
Original:
Element access
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list::front
list::back
Les itérateurs
Original:
Iterators
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list::begin
list::cbegin

(C++11)
list::end
list::cend

(C++11)
list::rbegin
list::crbegin

(C++11)
list::rend
list::crend

(C++11)
Capacité
Original:
Capacity
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list::empty
list::size
list::max_size
Modificateurs
Original:
Modifiers
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list::clear
list::insert
list::emplace (C++11)
list::erase
list::push_front
list::emplace_front (C++11)
list::pop_front
list::push_back
list::emplace_back (C++11)
list::pop_back
list::resize
list::swap
Opérations
Original:
Operations
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list::merge
list::splice
list::remove
list::remove_if
list::reverse
list::unique
list::sort
 
void unique();
(1)
template< class BinaryPredicate >
void unique( BinaryPredicate p );
(2)
Supprime tous' consécutive en double les éléments du conteneur. Seul le premier élément de chaque groupe d'éléments égal reste. La première version utilise operator== de comparer les éléments, la deuxième version utilise le prédicat binaire donné p .
Original:
Removes all consecutive duplicate elements from the container. Only the first element in each group of equal elements is left. The first version uses operator== to compare the elements, the second version uses the given binary predicate p.
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Sommaire

[modifier] Paramètres

p - binary predicate which returns ​true if the elements should be treated as equal.

The signature of the predicate function should be equivalent to the following:

 bool pred(const Type1 &a, const Type2 &b);

The signature does not need to have const &, but the function must not modify the objects passed to it.
The types  Type1 and  Type2 must be such that an object of type list<T,Allocator>::const_iterator can be dereferenced and then implicitly converted to both of them.

[modifier] Retourne la valeur

(Aucun)
Original:
(none)
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[modifier] Complexité

Linéaire à la taille du récipient
Original:
Linear in the size of the container
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[modifier] Exemple

#include <iostream>
#include <list>
 
int main()
{
  std::list<int> x = {1, 2, 2, 3, 3, 2, 1, 1, 2};
 
  std::cout << "contents before:";
  for (auto val : x)
    std::cout << ' ' << val;
  std::cout << '\n';
 
  x.unique();
  std::cout << "contents after unique():";
  for (auto val : x)
    std::cout << ' ' << val;
  std::cout << '\n';
 
  return 0;
}

Résultat :

contents before: 1 2 2 3 3 2 1 1 2
contents after unique(): 1 2 3 2 1 2

[modifier] Voir aussi

supprime les doublons successifs dans une plage
Original:
removes consecutive duplicate elements in a range
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(fonction générique) [edit]