deduction guides for std::valarray - cppreference.com (original) (raw)

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

#include #include   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: