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
Our #LassaFever situation report for week 1, 2025 has been published.
54 cases have been confirmed and 10 deaths have been recorded across 6 states in Nigeria.
🔗Download, read, and share via https://ncdc.gov.ng/ncdc.gov.ng/themes/common/files/sitreps/1bded1685f8dc4961a169a274be138c2.pdf
Our #LassaFever situation reports for weeks 42, 2024 have been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 40, 2024 has been published.
1025 cases have been confirmed and 174 deaths have been recorded across 28 states in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our latest #LassaFever situation report shows that 982 confirmed cases and 168 deaths have been recorded in 2024.
This loss of lives is not just a number but a significant loss of a family member, friend, colleague or a seasoned healthcare worker
CEPI vaccines writes on the critical need for a #LassaFever vaccine to control this disease.
🔗
https://cepi.net/lassa-vaccine-urgently-needed-save-thousands-lives
Situation report: https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
We have published our latest #LassaFever epidemiology data.
Here you can find a summary of all the latest figures in our weekly infographic.🔽
The full report can be accessed via
🔗https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 32, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 30, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation reports for weeks 28 and 29, 2024 have been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 25, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 24, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 23, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
Our #LassaFever situation report for week 21, 2024 has been published.
The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria.
🔗Download, read, and share via
https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria