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Tricks with Default Template Arguments--Jonathan Müller

By Adrien Hamelin | Oct 28, 2020 12:01 PM | Tags: intermediate

Did you know?

Tricks with Default Template Arguments

by Jonathan Müller

From the article:

Just like regular function parameters, template parameters can also have default parameters. For class templates, this behaves mostly just like default function arguments: if you pass fewer template arguments than required, default template arguments are used to fill the remaining places. However, for function templates, it gets more complicated as template parameters for functions can be deduced by the normal function arguments. This leads to some interesting side-effects. In particular, default arguments of template parameters don’t need to be put at the end!

Let’s take a look at a couple of things we can do with default template arguments...

17 Smaller but Handy C++17 Features--Bartlomiej Filipek

By Adrien Hamelin | Oct 21, 2020 11:08 AM | Tags: c++17

Did you know about them?

17 Smaller but Handy C++17 Features

by Bartlomiej Filipek

From the article:

When you see an article about new C++ features, most of the time you’ll have a description of major elements. Looking at C++17, there are a lot of posts (including articles from this blog) about structured bindings, filesystem, parallel algorithms, if constexpr, std::optional, std::variant… and other prominent C++17 additions.

But how about some smaller parts? Library or language improvements that didn’t require decades to standardise or violent “battles” at the ISO meetings.

In this article, I’ll show you 17 (plus a few extra!) smaller C++17 things that will improve your code...

More and More Utilities in C++20--Rainer Grimm

By Adrien Hamelin | Oct 21, 2020 11:04 AM | Tags: c++20

Small but usefull things.

More and More Utilities in C++20

by Rainer Grimm

From the article:

Today, I present a few utilities for calculating the midpoint of two values, check if a std::string starts or ends with a substring, and create callables with std::bind_front. These little utilities may not seem so little when you need them...

C++ Compile time conditional struct member variables--Saleem Ahmad

By Adrien Hamelin | Oct 12, 2020 10:35 AM | Tags: intermediate c++17

Before we get metaclasses one day?

C++ Compile time conditional struct member variables

by Saleem Ahmad

From the article:

C++ has rich set of features to do compile time calculations and optimizations to generate a better code. In one of code segment I have very large data structure in which few member variables are not used based on compile time if constexpr condition, but these variables are logged in the log line...

Range-v3: An Introduction to the Library [In Spanish] -- Daniel G Vergel

By Daniel G Vergel | Oct 8, 2020 11:30 AM | Tags: None

This series of posts provides a brief introduction to some of the most commonly used algorithms, views, and actions of the library. It is written entirely in Spanish, in part to mitigate the lack of educational materials on modern C++ currently available in my native language. Many of the codes are nevertheless self-explanatory, and I hope, may be of interest to a broader audience.

Ranges-v3: An Introduction to the Library

 

Range-v3: An Introduction to the Library

by Daniel G Vergel

About the series

As an Associate Professor at the European University (Madrid, Spain), I decided to integrate C++17/20 and the Range-v3 library into my teaching materials to build a more interesting and up-to-date syllabus for my courses. The adoption of a functional style of coding has helped me produce better and more expressive code, making my students' first approach to system programming easier.

  1. Examples 1 (generate_n, group_by, sort, to) and 2 (filter)
  2. Examples 3 (enumerate, shuffle, take, zip) and 4 (intersperse, tokenize)
  3. Examples 5 (getlines, transform) and 6 (iota, set_difference, split_when)
  4. Example 7 (stable_partition, subrange)
  5. Example 8 (concat, drop, generate, take_while)
  6. Examples 9 (cycle) and 10 (keys, values)