NAME

deductionguidesforstd::valarray - deductionguidesforstd::valarray

Synopsis


Defined in header <valarray>
template<typename T, std::size_t cnt> (since C++17)
valarray(const T(&)[cnt], std::size_t) -> valarray<T>;


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)

Example


// Run this code


  #include <valarray>
  int main() {
    int a[] = {1, 2, 3};
    std::valarray va(a, 3); // uses explicit deduction guide
  }