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🤔 Для чего нужно сравнивать ссылки при мемоизации?

Мемоизация (React.memo, useMemo, useCallback) основана на сравнении входных данных. Для объектов и функций сравнение происходит по ссылке.
Если ссылка на объект или функцию изменилась — React считает, что данные изменились. Даже если внутренности одинаковые.
Поэтому важно сохранять одну и ту же ссылку, если значение не изменилось, иначе мемоизация не сработает и будет лишняя перерисовка.

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Frontend | Вопросы собесов
🤔 Для чего нужно сравнивать ссылки при мемоизации?

Мемоизация (React.memo, useMemo, useCallback) основана на сравнении входных данных. Для объектов и функций сравнение происходит по ссылке.
Если ссылка на объект или функцию изменилась — React считает, что данные изменились. Даже если внутренности одинаковые.
Поэтому важно сохранять одну и ту же ссылку, если значение не изменилось, иначе мемоизация не сработает и будет лишняя перерисовка.

Ставь 👍 если знал ответ, 🔥 если нет
Забирай 📚 Базу знаний
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How to use Telegram to find people near you

Telegram is not only limited to being an instant messaging app between friends and family, but also has a real social component, through which you can meet new people and start conversations. All this through a functionality that integrates. This application is very complete and has many more useful features, like the bots that its main competitors. This is a compelling reason which is why you should download Telegram on any of the available platforms. And this time, we will focus on the function of people nearby. If you want to meet new people and make friends, then this is a feature worth checking out. Next, we will explain in detail how you can use it.

🤔 Для чего нужно сравнивать ссылки при мемоизации?

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