Feb 9, 2025 · std::accumulate performs a left fold. In order to perform a right fold, one must reverse the order of the arguments to the binary operator, and use reverse iterators.

What you accumulate doesn't have to be just a number; it can be something more complex. For example, here's a simple example of using accumulate to calculate the average of a vector of ints:

std:: accumulate ... Accumulate values in range Returns the result of accumulating all the values in the range [first,last) to init. The default operation is to add the elements up, but a different operation can …

Feb 6, 2025 · Функция std::accumulate из заголовка <numeric> — это универсальный инструмент для выполнения операций с диапазоном ...

Sep 9, 2024 · accumulate () and partial_sum () functions are used to find the sum or any other accumulated value that is obtained by doing the addition or any other binary operation on the …

Computes the sum of the given value init and the elements in the range [first, last). The first version uses operator+ to sum up the elements, the second version uses the given binary function op. binary …

Feb 9, 2025 · In order to perform a right fold, one must reverse the order of the arguments to the binary operator, and use reverse iterators. If left to type inference, op operates on values of the same type …

std::accumulate выполняет левое fold . Чтобы выполнить правое сворачивание, необходимо поменять порядок аргументов бинарного оператора на обратный и использовать обратные …

std::accumulate performs a left fold. In order to perform a right fold, one must reverse the order of the arguments to the binary operator, and use reverse iterators.

Defined in header <numeric> Effects: std::accumulate performs fold operation using f function on range [first, last) starting with init as accumulator value. Effectively it's equivalent of: acc = f(acc, *it); In …