Namespaces
Variants
Actions

deduction guides for std::valarray

From cppreference.com
< cpp‎ | numeric‎ | valarray
 
 
Numerics library
 
std::valarray
Deduction guides (C++17)
 
Defined in header <valarray>
template< typename T, std::size_t cnt >
valarray( const T(&)[cnt], std::size_t ) -> valarray<T>;
(since C++17)

This deduction guide is provided for std::valarray to allow deduction from array and size (note that deduction from pointer and size is covered by the implicit guides).

[edit] Example

Run this code
#include <iostream>
#include <valarray>
 
int main()
{
 int a[] = {1, 2, 3, 4};
 std::valarray va(a, 3); // uses explicit deduction guide
 for (int x : va)
 std::cout << x << ' ';
 std::cout << '\n';
}

Output:

1 2 3
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/numeric/valarray/deduction_guides&oldid=160827"

AltStyle によって変換されたページ (->オリジナル) /