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      std::valarray<T>::sum

      From cppreference.com
      <cpp‎ |numeric‎ |valarray
       
       
       
      std::valarray
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      T sum()const;

      Computes the sum of the elements.

      The function can be used only ifoperator+= is defined for typeT. If thestd::valarray is empty, the behavior is undefined. The order in which the elements are processed by this function is unspecified.

      Contents

      [edit]Parameters

      (none)

      [edit]Return value

      The sum of the elements.

      [edit]Example

      Run this code
      #include <iostream>#include <valarray> int main(){std::valarray<int> a={1,2,3,4,5,6,7,8,9,10};std::cout<< a.sum()<<'\n';}

      Output:

      55

      [edit]See also

      applies a function to every element of a valarray
      (public member function)[edit]
      sums up or folds a range of elements
      (function template)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/numeric/valarray/sum&oldid=124259"

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