std::array::front

 

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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[]

array::front

array::back

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

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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.

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get

swap

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reference front();		(seit C++11)
const_reference front()const;		(seit C++11)

Eine Referenz auf das erste Element in dem Behälter .

Original:

Returns a reference to the first element in the container.

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Aufruf front auf einem leeren Behälter undefined .

Original:

Calling front on an empty container is undefined.

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Parameter

(None)

Original:

(none)

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Rückgabewert

Verweisen auf das erste Element

Original:

reference to the first element

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Komplexität

Constant

Original:

Constant

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Notes

Für einen Behälter c ist die Expression c.front() entspricht *c.begin() .

Original:

For a container c, the expression c.front() is equivalent to *c.begin().

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Beispiel

Der folgende Code verwendet front um das erste Element einer std::array<char> anzuzeigen:

Original:

The following code uses front to display the first element of a std::array<char>:

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#include <array>#include <iostream>   int main(){std::array<char> letters {'o', 'm', 'g', 'w', 't', 'f'};   if(!letters.empty()){std::cout<<"The first character is: "<< letters.front()<<'\n';}}

Output:

The first character is o

See also

back	Zugriff auf das letzte Element (öffentliche Elementfunktion)