std::multimap::empty
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| bool empty() const; |
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Verifica se o recipiente não tem elementos, ou seja, se begin() == end().
Original:
Checks if the container has no elements, i.e. whether begin() == end().
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Índice |
[editar] Parâmetros
(Nenhum)
Original:
(none)
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[editar] Valor de retorno
true se o recipiente estiver vazio, false contrário
Original:
true if the container is empty, false otherwise
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[editar] Exceções
[editar] Complexidade
Constante
Original:
Constant
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[editar] Exemplo
O código a seguir usa
empty para verificar se um std::multimap<int> contém quaisquer elementos:
Original:
The following code uses
empty to check if a std::multimap<int> contains any elements:
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#include <multimap> #include <iostream> int main() { std::multimap<int> numbers; std::cout << "Initially, numbers.empty(): " << numbers.empty() << '\n'; numbers.push_back(42); numbers.push_back(13317); std::cout << "After adding elements, numbers.empty(): " << numbers.empty() << '\n'; }
Saída:
Initially, numbers.empty(): 1 After adding elements, numbers.empty(): 0
See also
| devolve o número de elementos Original: returns the number of elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro) | |
