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C++17 STL Cookbook

You're reading from   C++17 STL Cookbook Discover the latest enhancements to functional programming and lambda expressions

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787120495
Length 532 pages
Edition 1st Edition
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Author (1):
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Jacek Galowicz Jacek Galowicz
Author Profile Icon Jacek Galowicz
Jacek Galowicz
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Table of Contents (11) Chapters Close

Preface 1. The New C++17 Features FREE CHAPTER 2. STL Containers 3. Iterators 4. Lambda Expressions 5. STL Algorithm Basics 6. Advanced Use of STL Algorithms 7. Strings, Stream Classes, and Regular Expressions 8. Utility Classes 9. Parallelism and Concurrency 10. Filesystem

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 task easily.

How to do it...

In this section, we will normalize the values of a vector from an example numeric range to a normalized one in two different ways, one of them using std::minmax_element and one using std::clamp:

  1. As always, we first need to include...
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