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      std::map::count

      De cppreference.com

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      <metanoindex/>

       
      C++
       
      Recipientes biblioteca
       
      std::map
      Funções de membro
      Original:
      Member functions
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      map::map
      map::~map
      map::operator=
      map::get_allocator
      acesso. Elemento
      Original:
      Element access
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      map::at
      map::operator[]
      Iteradores
      Original:
      Iterators
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      map::begin
      map::cbegin
      (C++11)
      map::end
      map::cend
      (C++11)
      map::rbegin
      map::crbegin
      (C++11)
      map::rend
      map::crend
      (C++11)
      Capacidade
      Original:
      Capacity
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      map::empty
      map::size
      map::max_size
      Modificadores
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      Modifiers
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      map::clear
      map::insert
      map::emplace(C++11)
      map::emplace_hint(C++11)
      map::erase
      map::swap
      Pesquisa
      Original:
      Lookup
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      map::count
      map::find
      map::equal_range
      map::lower_bound
      map::upper_bound
      Observadores
      Original:
      Observers
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      map::key_comp
      map::value_comp
       
      <tbody> </tbody>
      size_type count( const Key& key ) const;
      Retorna o número de elementos com key chave.
      Original:
      Returns the number of elements with key key.
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      Parâmetros

      key -
      valor dos elementos chave para contar
      Original:
      key value of the elements to count
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      Valor de retorno

      Número de elementos com key chave
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      Number of elements with key key
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      Complexidade

      Logarithmic in the size of the container plus linear in the number of the elements found.

      Veja também
      encontra elemento com chave específica
      Original:
      finds element with specific key
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      (função pública membro) [edit]
      retorna a escala de elementos que combinam com uma tecla específica
      Original:
      returns range of elements matching a specific key
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      (função pública membro) [edit]