Скачать или смотреть Implementing std::invoke in C++14

I've added sort_by to KDAlgorithms. This required that I for C++14 had to implement what in C++17 is known as std::invoke.
In this video, I'll give you some insights into what that involved. It will, among a lot of other things, take us by:

SFINAE and tag dispatching
if constexpr
parameter packs
static_assert

Links:
Type Traits: https://en.cppreference.com/w/cpp/hea...

Mini series on templates:    • A super fast intro to C++ templates  

Episode on type traits:    • Understanding C++ Type Traits  

Full version of the C++14 invoke in kdalgorithms: https://github.com/KDAB/KDAlgorithms/...

0:00 Introduction
1:12 The problem with std::sort
2:24 Introducing sort_by taking a member to sort by.
4:45 The problem to solve - std::invoke
5:44 sort_by in C++17 using std::invoke
6:14 Recapture - the building blocks
8:48 SFINAE
13:03 This is a simplified version
13:27 Pointers versus instances plus lambda's
16:02 What would invoke look like in C++17
18:56 Variable amount of arguments
21:12 Finally variable amount of arguments in the C++14 version
22:21 The final version is in github

All QML tips and tricks videos :    • QML Tips and Tricks  

All Qt Widgets and more videos:
   • Qt Widgets and more  

The example code showcased in this video is available here: https://github.com/KDAB/kdabtv/tree/m...

About the host:
The video is presented by Jesper Pedersen, who started with Qt back when Qt was widgets only and the version was 1.44, which gives him 21 years of experience with Qt. Since 2000 he has taught almost 100 Qt classes, ranging from Qt Widgets to QML. Heck, Jesper even taught a few classes on QTopia Core — Trolltech's initial attempt at creating a phone stack. Today Jesper holds a fancy business title, but that doesn't prevent him from coding both in his job and in his spare time.

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