C++17 STL Cookbook

Limiting the values of a vector to a specific numeric range with std::clamp

In a lot of applications, we get numeric data from somewhere. Before we can plot or otherwise process it, it may need to be normalized because the values differ randomly far from each other.

Usually, this would mean a little std::transform call over the data structure that holds all these values, combined with a simple scaling function. But if we do not know how large or small the values are, we need to go through the data first in order to find the right dimensions for the scaling function.

The STL contains useful functions for this purpose: std::minmax_element and std::clamp. Using these and combining them with some lambda expression glue, we can perform such a ...