Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
All Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletter Hub
Free Learning
Arrow right icon
timer SALE ENDS IN
0 Days
:
00 Hours
:
00 Minutes
:
00 Seconds
Arrow up icon
GO TO TOP
C++17 STL Cookbook

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

Arrow left icon
Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787120495
Length 532 pages
Edition 1st Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
 Galowicz Galowicz
Author Profile Icon Galowicz
Galowicz
Arrow right icon
View More author details
Toc

Table of Contents (18) Chapters Close

Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
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 Index

Calling multiple functions with the same input


There are a lot of tasks, which lead to repetitive code. A lot of repetitive code can be eliminated easily using lambda expressions and a lambda expression helper that wraps such repetitive tasks is created very quickly.

In this section, we will play with lambda expressions in order to forward a single call with all its parameters to multiple receivers. This is going to happen without any data structures in between, so the compiler has a simple job to generate a binary without overhead.

How to do it...

We are going to write a lambda expression helper, which forwards a single call to multiple objects, and another lambda expression helper, which forwards a single call to multiple calls of other functions. In our example, we are going to use this to print a single message with different printer functions:

  1. Let's include the STL header we need for printing first:
      #include <iostream>
  1. At first, we implement the multicall function, which is central...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $15.99/month. Cancel anytime
Visually different images