std::map::size
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<tbody> </tbody> size_type size() const; |
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Returns the number of elements in the container, i.e. std::distance(begin(), end()).
Parameter
(None)
Original:
(none)
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Rckgabewert
die Anzahl der Elemente in dem Behlter
Original:
the number of elements in the container
The text has been machine-translated via Google Translate.
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Ausnahmen
Komplexitt
Constant
Beispiel
The following code uses size to display the number of elements in a std::map<int>:
#include <map>
#include <iostream>
int main()
{
std::map<int, char> nums {{1, 'a'}, {3, 'b'}, {5, 'c'}, {7, 'd'}};
std::cout << "nums contains " << nums.size() << " elements.\n";
}
Output:
nums contains 4 elements.
Siehe auch
prft, ob der Container leer ist Original: checks whether the container is empty The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (ffentliche Elementfunktion) | |
gibt die maximal mgliche Anzahl von Elementen Original: returns the maximum possible 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. (ffentliche Elementfunktion) | |