List of changes:

Introduction:

• Updated C++ timeline, Tiobe index, Redmonk index
• Improved "Why C++ is so Popular?"
• Added "C++ Weakness" section
• Update/fixed book references
• Added course slide legend

Basic Concepts I:

• Added NASA PI note
• Fixes #5 (used ! as escape char)

Basic Concepts II:

• Fixes #6 (wrong array size)

Basic Concepts III:

• Fixes malloc returns NULL for zero-size allocations
• Added "Non-Allocating Placement section", "Non-Throwing Allocation", "Constants and Literals" sections
• Refactored "Structure Initialization"
• Add a note for virtual + constexpr usage in C++20

Basic Concepts IV:

• Fixed #6, wrong lambda return

Object-Oriented Programming I:

• Moved struct initialization to "Basic Concepts III"
• Improved = default implications
• Improved/refactored static keyword section

Object-Oriented Programming II:

• Fixes #6, downcast variables

Template and Meta-programming I:

• Refactoring, especially "Template Parameter Types"

Template and Meta-programming II:

• Improved "Template Class Constructor" section

Translation Units:

• Added "Linkage of const and constexpr variables" section
• Simplified "Linkage Summary"
• Better explanation of ODR - Point 3 with improved inline, template, constexpr descriptions

C++ Ecosystem:

• Added a quote about maintenance effort
• Updated valgrind version
• Removed gcc detailed warnings section

Advanced Topics:

• Improve "Universal reference" section
• Minor fixes for "Smart pointer" section

Performance Optimization I:

• Added John Carmak note
• Added "page thrashing" description
• Moved "Spatial Locality" and "Temporal Locality" details to Performance Optimization II

Performance Optimization II:

• Added "Compiler Hints - [assume]
• Minor improvements to "Arguments passing" section
• Added __attribute__(pure) and __attribute__(const) descriptions
• Added a few notes to "Object Dynamic Behavior Optimizations", e.g. virtual implications

Performance Optimization III:

• Minor improvements to "Help the Compiler to Produce Better Code"
• Added "Post-Processing Binary Optimizer" section