Object-Oriented Programming Key Ideas Class Inheritance Polymorphism Early and Late Binding Virtuality override final Template method Destructor Interfaces Liskov substitution principle /destructor Slicing ShadowingPolymorphism Polymorphism (poly morphs) is the characteristic of an object to behave differently at run time. Polymorphism ▪ Inheritance is the base of polymorphism ▪ Enables separation of the interface and its implementation is one of the crucial ideas of modern software design.Object-Oriented Programming Key Ideas Class Inheritance Polymorphism Early and Late Binding Virtuality

Object Lifetime From Start to Finish Thamara Andrade | https://thamara.dev/34 Me finally understanding why my code was failing… ... and realizing I didn’t really understand the rules for object object lifetime.What is object lifetime anyway? 567You can expect… but not… •Review of object lifetime •(A Little of) RAII •Beyond basic lifetime •Common pitfalls •Value categories •Unions/Arrays •Any Initialization68 { Resource Acquisition Is Initialization Tying resource acquisition and deallocation to object lifetime.69 { struct DynamicArray { explicit DynamicArray(size_t sz) : m_d(new int[sz]) {} ~DynamicArray()

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Andreas Fertig Write unique code! Back to Basics Object-Oriented Programming Presentation Material CppCon, Aurora CO, 2024-09-20© 2024 Andreas Fertig AndreasFertig.com All rights reserved All programs com post@AndreasFertig.com 5A class ■ C++ adds classes for object-oriented programming. ■ The constructors B are called when the object is cre- ated. ■ Data fields of classes should be initialized Flush() override { puts("USBC Flush"); } 15 }; 16 17 int main() 18 { 19 A Note, I’m creating a USBC object and store it as IOPort 20 std::unique_ptr port{std::make_unique()}; 21 22 port−>Flush();

std::stringObject Introspection (OI) Goals • Byte level memory footprint analysis for objects • Complete object type hierarchies • Dynamic allocations and containers • Optimised, production applications in Generation • Object Introspection as a Library • Object Introspection as a Profiler • Object Introspection Applied Type Reconstruction Object Introspection• (Re)construct an entire object hierarchy Reconstruction • Code Generation • Object Introspection as a Library • Object Introspection as a Profiler • Object Introspection Applied Type Reconstruction Object Introspection Measurement Code

Memory Model C++11 – C++23About Me: alex.dathskovsky@speedata.io www.linkedin.com/in/alexdathskovsky https://www.cppnext.comAlex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/a

of similar types." 41RUNTIME POLYMORPHISM 42RUNTIME POLYMORPHISM 43RUNTIME POLYMORPHISM class object { rect r; bool dirty; virtual void build_context_menu(); virtual void on_context_menu_click(); class object { rect r; bool dirty; virtual void build_context_menu(); virtual void on_context_menu_click(); virtual void draw() = 0; }; class document { vectorobject>> objects; Parent 53RUNTIME POLYMORPHISM 54RUNTIME POLYMORPHISM struct object_t { }; using document_t = vector<object_t>; 1 2 3 4 5 void draw(document_t const& d) { 6 tc::for_each(d, [](auto const& o) { 7

Non-type template parameter deduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.6 Object-oriented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 3.2 Function Object Wrapper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 std::function Memory Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Atomic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Consistency Model . . .

on in-process interoperability.Run down of some approaches Just be like C? – post-1972 Common Object Model (COM) – 1993 Foreign function interface (libffi) – 1996 Simplified Wrapper and Interface Generator sizeof(size_t) MSYS2 compile of gcc, sizeof(long) == 4You can make interop suck less by… Explicitly state/document argument content. • Instead of long or int, use int64_t or int32_t. • String encoding is not the less by… Explicitly state/document argument content. • Instead of long or int, use int64_t or int32_t. • String encoding is not the same as “width”. Explicitly state/document/reference function conventions