Basic numeric operations

Unearthing the power of the C++ STL’s numeric functions is a refreshing experience. In this section, we’ll dive deep into the foundational numeric operations. By mastering these, you’ll unlock the capability to generate sequences, compute comprehensive summaries, and efficiently execute sophisticated operations on contiguous elements. So, buckle up, and let’s get started!

Generating sequences with std::iota

The first treasure we’re going to unearth is std::iota. It’s a simple yet powerful tool in the numeric operations chest. std::iota fills a range with a sequence of consecutive values. Starting from an initial value, it assigns increasing values to subsequent elements in the range. Here, you can see that std::itoa fills a vector with five consecutive integers, starting with 1:

std::vector<int> vec(5);
std::iota(vec.begin(), vec.end(), 1);
// vec now holds: {1, 2, 3, 4, 5}

This function is a boon when...