В C# есть модификатор доступа internal, который закрывает свойство или метод для всего, кроме текущей сборки (сборка это по сути группа пространств имён). И это чертовски удобно для построения правильной архитектуры по DDD — ты делаешь домен отдельной сборкой без внешних зависимостей, у сущностей закрываешь сеттеры и другие поля модификатором internal, а бизнес-правила с открытыми методами уже пишешь в агрегатах, которые содержат эти сущности. Агрегаты объявлены в той же сборке, так что они могут с сущностями делать что угодно, но слой приложения уже сможет вызвать только метод агрегата.
Пример. Есть бизнес-процесс, который включает в себя две сущности: письмо и прикреплённый к нему документ. У каждой из этих сущностей разные жизненные циклы, но письмо можно отправить только в том случае, если статус документа "Согласован". Мы делаем агрегат "письмо с документом" и там public-метод отправки письма сначала проверяет статус документа, а потом вызывает internal-метод отправки в сущности письма. Снаружи (вне домена) вызвать сразу отправку письма невозможно.
Но как эту задачу решают разработчики на других языках? Я совершенно не понимаю, как сделать хорошую архитектуру без internal. Окей, в некоторых языках вообще нет вменяемого ОПП и системы типов, но и к таким ребятам я бы не подходил с вопросами об энтерпрайз-архитектуре. Однако, многие серьёзные проекты пишутся на Java или, скажем, Go, что делают разработчики там? Может, кто-нибудь знает, и расскажет мне в комментариях?
#dev
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Stop settling for repainting tools and local scripts. Pro Thunder V12 is the culmination of 5 years of development by SS7Trader Ltd.
Why the pros choose V12:
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⏳5-Year Legacy: Continuous evolution and optimization since 2021.
🎯 Pure Simplicity: Clear Buy/Sell signals with a fixed 5-minute expiry.
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⏳5-Year Legacy: Continuous evolution and optimization since 2021.
🎯 Pure Simplicity: Clear Buy/Sell signals with a fixed 5-minute expiry.
🌍 Universal: Works on any broker, any chart, and any timeframe.
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Pro Thunder V12: The Ultimate Trading Solution!
The wait is over! Pro Thunder V12 is finally here to revolutionize your trading. It's time to trade smarter with V12 Intelligence and leave the emotions behind.
⚙Featuring Four New Layers of Intelligence In Pro Thunder V12 Version:
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⭐️Neural Channel
⭐️Live News Panel
⭐️Neural Networks 2.0 (Upgraded)
👑 Key Features:
👉 100% Non-Repaint: Trustworthy signals that never disappear.
👉 85%+ Win Rate: High accuracy for consistent results.
👉Zero Martingale: A safer approach to trading.
👉Verified Back Testing Results: Proven performance you can rely on.
👉Telegram Alerts: Get notified instantly on your phone.
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Pro Thunder V12: The Ultimate Trading Solution!
The wait is over! Pro Thunder V12 is finally here to revolutionize your trading. It's time to trade smarter with V12 Intelligence and leave the emotions behind.
⚙Featuring Four New Layers of Intelligence In Pro Thunder V12 Version:
⭐️Neural Engine
⭐️Neural Channel
⭐️Live News Panel
⭐️Neural Networks 2.0 (Upgraded)
👑 Key Features:
👉 100% Non-Repaint: Trustworthy signals that never disappear.
👉 85%+ Win Rate: High accuracy for consistent results.
👉Zero Martingale: A safer approach to trading.
👉Verified Back Testing Results: Proven performance you can rely on.
👉Telegram Alerts: Get notified instantly on your phone.
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✈️Telegram: t.me/SSsevenTrader
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