/
githubmirror
/
immutable-js
Обзор
Документация
Войти
/
githubmirror
/
immutable-js
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
main
website/docs/update().mdx
20 строк
778 B
Julien Deniau
Doc as mdx instead of export from .d.ts file (#2104)
24 май 2025, 00:47
Не верифицирован
24 май 2025, 00:47
21de701
Код
Авторство
О чём код?
import Repl from '@/repl/Repl.tsx'; import CodeLink from '@/mdx-components/CodeLink.tsx'; # update() Returns a copy of the collection with the value at key set to the result of providing the existing value to the updating function. A functional alternative to `collection.update(key, fn)` which will also work with plain Objects and Arrays as an alternative for `collectionCopy[key] = fn(collection[key])`. <Signature code={`update(collection: C, key, updater): C;`} /> <Repl defaultValue={`const originalArray = List(['dog', 'frog', 'cat']); update(originalArray, 1, (val) => val.toUpperCase()); // [ 'dog', 'FROG', 'cat' ]`} /> <Repl defaultValue={`const originalObject = { x: 123, y: 456 }; update(originalObject, 'x', (val) => val * 6); // { x: 738, y: 456 }`} />