std::array::empty

 

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std::array

Member-Funktionen Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Elementzugriff zerstört Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::at

array::operator[]

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array::data

Iteratoren Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::begin array::cbegin

array::end array::cend

array::rbegin array::crbegin

array::rend array::crend

Kapazität Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::empty

array::size

array::max_size

Modifiers Original: Modifiers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

array::fill

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Non-Member-Funktionen Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

get

swap

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tuple_size

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constexprbool empty();		(seit C++11)

Prüft, ob der Behälter keine Elemente, dh ob begin()== end() .

Original:

Checks if the container has no elements, i.e. whether begin()== end().

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Parameter

(None)

Original:

(none)

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Rückgabewert

true wenn der Behälter leer ist, false anders

Original:

true if the container is empty, false otherwise

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Ausnahmen

noexcept specification:  

noexcept

  (seit C++11)

Komplexität

Constant

Original:

Constant

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Beispiel

Der folgende Code verwendet empty, um zu überprüfen, ob ein std::array<int> enthält alle Elemente:

Original:

The following code uses empty to check if a std::array<int> contains any elements:

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#include <array>#include <iostream>   int main(){std::array<int, 4> numbers {3, 1, 4, 1};std::array<int, 0> no_numbers;   std::cout<<"numbers.empty(): "<< numbers.empty()<<'\n';std::cout<<"no_numbers.empty(): "<< no_numbers.empty()<<'\n';}

Output:

numbers.empty(): 0 no_numbers.empty(): 1

See also

size	liefert die Anzahl der Elemente 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. (öffentliche Elementfunktion)