std::valarray::apply

 

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Genéricos operaciones numéricas Original: Generic numeric operations 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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std::valarray

Las funciones miembro 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.
valarray::valarray valarray::~valarray valarray::operator= valarray::operator[] valarray::swap valarray::size valarray::resize valarray::sum valarray::min valarray::max valarray::shift valarray::cshift valarray::apply	valarray::operator+ valarray::operator- valarray::operator~ valarray::operator! valarray::operator+= valarray::operator-= valarray::operator*= valarray::operator/= valarray::operator%= valarray::operator&= valarray::operator|= valarray::operator^= valarray::operator<<= valarray::operator>>=
Terceros funciones 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.
swap (C++11) begin (C++11) end (C++11) abs exp log log10 pow sqrt sin cos tan asin acos atan atan2 sinh cosh tanh	operator* operator/ operator% operator+ operator- operator^ None operator& operator| operator<< operator>> operator&& operator None operator== operator!= operator< operator> operator<= operator>=
Clases de ayuda Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
slice_array gslice_array indirect_array	slice gslice mask_array

 

valarray<T> apply( T func(T) ) const;
valarray<T> apply( T func(const T&) ) const;

Devuelve una valarray nuevo del mismo tamaño con valores que se adquieren mediante la aplicación de func función de los valores anteriores de los elementos .

Original:

Returns a new valarray of the same size with values which are acquired by applying function func to the previous values of the elements.

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Parámetros

func

-

funcionar a aplicar a los valores Original: function to apply to the values The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

El valarray resultante con los valores adquiridos mediante la aplicación de func función .

Original:

The resulting valarray with values acquired by applying function func.

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Notas

La función se puede implementar con el tipo de retorno diferente de std::valarray. En este caso, el tipo de reemplazo tiene las siguientes propiedades:

Original:

The function can be implemented with the return type different from std::valarray. In this case, the replacement type has the following properties:

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• Todas las funciones miembro de const std::valarray se proporcionan .

  Original:

  All const member functions of std::valarray are provided.

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• std::valarray, std::slice_array, std::gslice_array, std::mask_array std::indirect_array y puede ser construida a partir del tipo de reemplazo .

  Original:

  std::valarray, std::slice_array, std::gslice_array, std::mask_array and std::indirect_array can be constructed from the replacement type.

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• Todas las funciones que aceptan un argumento de tipo const std::valarray& también deben aceptar el tipo de reemplazo .

  Original:

  All functions accepting a arguments of type const std::valarray& should also accept the replacement type.

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• Todas las funciones que aceptan dos argumentos de tipo const std::valarray& debe aceptar todas las combinaciones de const std::valarray& y el tipo de reemplazo .

  Original:

  All functions accepting two arguments of type const std::valarray& should accept every combination of const std::valarray& and the replacement type.

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Ejemplo

calcula e imprime los 10 primeros factoriales

Original:

calculates and prints the first 10 factorials

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#include <iostream>
#include <valarray>
#include <cmath>
 
int main()
{
    std::valarray<int> v = {1,2,3,4,5,6,7,8,9,10};
    v = v.apply([](int n)->int {
                    return std::round(std::tgamma(n+1));
                });
    for(auto n : v) {
        std::cout << n << ' ';
    }
    std::cout << '\n';
}

Output:

1 2 6 24 120 720 5040 40320 362880 3628800

Ver también

for_each	se aplica una función a una serie de elementos Original: applies a function to a range of elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función de plantilla)