Vladislav Antonov vladiant

GoF design patterns with C++26 idioms

Runnable examples of 21 Gang-of-Four patterns, each rewritten with modern language and library features instead of the textbook "abstract base class + virtual clone()" shape.

File	Patterns
`creational.cpp`	Singleton, Factory Method, Abstract Factory, Builder, Prototype
`structural.cpp`	Adapter, Bridge, Composite, Decorator, Facade, Flyweight, Proxy
`behavioral.cpp`	Strategy, Observer, Command, State, Visitor/Interpreter, Template Method, Iterator, Chain of Responsibility, Memento
`reflection.cpp`	Factory/Visitor/Memento helpers using static reflection (P2996)

AI Exam Tutor — Certification Prep Prompt

Customise the three variables below, then paste into Claude.

EXAM_NAME = "[Your exam name — e.g. AWS Certified GenAI Developer Professional, CKA, GCP Professional Data Engineer, PMP]" MY_ROLE = "[Your background — e.g. Senior Software Engineer, DevOps Lead, Product Manager with 3 years cloud experience]" WEAK_AREAS = "[Known weak spots or leave blank — e.g. networking concepts, cost optimisation, IAM policies]"

You are my personal certification exam tutor helping me prepare for the {EXAM_NAME}.

Links

https://github.com/andreasfertig/programming-with-cpp20
https://github.com/scivision/Cpp23-examples
https://github.com/uNetworking/uWebSockets
https://gist.github.com/NickNaso/ff50ecd38becbadafb1c40a5f2a49c87
https://github.com/hailiang194/NeoSekaiEngine
https://www.kdab.com/github-actions-for-cpp-and-qt/
https://github.com/MiKom/QtQuickApp
- .clang-format , .clang-tidy , .cmake-format.py , .pre-commit-config.yaml

C++ Reflection

Compiler Support

Links

Reflection in C++26

Contracts

Main features

contract_assert replaces assert

Unlike assert, contract_assert is a proper keyword

Four build options: the evaluation semantics

ignore – do not check the assertion;
enforce — check the assertion; if the check fails, print a message and terminate (the default behaviour);

Duration: 30–60 minutes (not more)

Agenda:

Quick context (2 min) — “We’re here to decide X. Everyone’s read the RFC”.
Address open questions (10–15 min) — Go through unresolved comments and open questions from the RFC
Discussion (15–30 min) — Debate the options, raise new concerns
Decision (5–10 min) — Make the call

Who should be there:

	from python:3.8-slim

	COPY . /app/

	WORKDIR /app

	RUN chmod +x ./entrypoint.sh

	ENTRYPOINT [ "/app/entrypoint.sh" ]

	// https://www.elbeno.com/blog/?p=1831
	// https://medium.com/@abhishek.kr121/variadic-templates-in-c-6955933f5781

	#include <iostream>

	// Initial code

	// auto log() -> void { std::cout << std::endl; }

	// template <typename T, typename... Args>

	#include <iostream>
	#include <tuple>

	// basic printing
	template <typename TupleT, std::size_t... Is>
	void printTupleImp(const TupleT& tp, std::index_sequence<Is...>) {
	size_t index = 0;
	auto printElem = [&index](const auto& x) {
	if (index++ > 0)
	std::cout << ", ";

	#include <iostream>
	#include <tuple>

	template <typename T>
	void printElem(const T& x) {
	std::cout << x << ',';
	};

	template <typename TupleT, std::size_t... Is>
	void printTupleManual(const TupleT& tp) {