C++: Advanced Topics (2023-12-04 - 2023-12-06)

Github Repository

• https://github.com/jfasch/2023-12-04

Original Agenda

• Agenda: C++: Advanced Topics

Day 1: Introduction: C++, A New Language

• History, Background

• A Live-Hacked Tour Around The New C++

Pythonicity

• Range Based for Loops: Introduction

• Tuple Unpacking (Err, Structured Binding)

• Duck Typing (Err, auto) Without A Duck

Brace Initialization

• Brace Initialization: Introduction

• std::initializer_list: Brace Initialization, Implementor’s View

• Brace Initialization: A Mess

New OO Features

• override

• final

• = delete

• = default

Functions: std::function<>, Lambdas

From Functions, Functions:

• std::bind

• std::function

From Lambda

• Lambda

• Live Hacking: Handwritten Functors (Too Much Boilerplate)

• Live Hacking: Handwritten Functors, And Capturing By Reference (Pitfalls)

• Lambda: More Capturing

Day 2: Simply Getting Stuff Done

Classic Polymorphism: Interfaces

Inheritance And Object Oriented Design

• Inheritance Basics

• Virtual Methods

• Polymorphic Usage Of Objects

• Destructors And Inheritance

• Virtual Destructors

• C++ “Interfaces”

Look over sensor hierachy in our project:

• sensor.h

• sensor-w1.h

• sensor-mock.h

Smart Pointers

From Smart Pointers (std::unique_ptr, std::shared_ptr)

• Introduction

• std::unique_ptr

• std::shared_ptr

• std::weak_ptr

• Smart Pointers: Closing Words

Move Semantics

From Move Semantics, Rvalue References

• Lvalues, Rvalues, And Moving

• Implementing Move Semantics (class String, Live Hacked)

• Using Move Semantics In Own Code

• Afterword, Further Reading

Day 3: All The Rest

Morning Wakeup

Interfaces, And OO Design: Kochtopf And The Cloud

• Show switch.h: convenience methods in interface are possible :-)

• Show Kochtopf component

  Discuss design issues, e.g.

  • Relationship between controls and component (this, friend)

  • PowerControl::start() vs. set_state()

  • TemperatureControl::get_target_temperature() ⟶ Hysteresis

  Discuss threading

  • std::unique_ptr<> as member keeps component from being copyable

  • [this]

  • _running ⟶ std::atomic<>

  • Shutdown?

• Show test fixture

• What about sensor temperature? Add KochtopfTemperatureControl::get_current_temperature() (⟶ override)

• This would not be easy without TDD ☝️

• Discuss technical debt: Kochtopf has hardwired range of 2

Moving, Roundup

• Discuss L/R-Values, and what compiler generates when (from Lvalues, Rvalues, And Moving)

• Hack a String

  • Object Copy (And Resource Management): There Be Dragons

  • Implementing Move Semantics (class String, Live Hacked)

Containers And Algorithms

From Standard Template Library

• Standard Template Library: Basics

• std::vector (And std::copy())

• Algorithms

• Sequential Containers

• Associative Containers

And Embedded?

• Embedded Problems? Code Bloat? Type Erasure? Solutions?

• constexpr

Still Untold

• Strongly Typed enum

• Delegating Constructor

• Miscellaneous

• Alignment