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About pain points / feature requests: Is there an idiomatic way to duplicate a hash while replacing one of its values, preferably something that supports nesti
by thih9 1y ago
About pain points / feature requests:
Is there an idiomatic way to duplicate a hash while replacing one of its values, preferably something that supports nesting?
Whenever I work with react and immutable structures, this comes up and I hack something simple.
I don’t do FE on a regular basis though so my perspective may be skewed.
- sethaurus 1y agoThese days that's pretty well-supported in the base language: const updated = { ...existing, someKey: someNewValue }; You mention nesting. That starts to look messier: const updated = { ...existing, someKey: { ...existing.someKey, ...someNewValue } }; There's a whole cottage industry of little libraries to make this ergonomic/fast in the general case (copying immutable objects with nested changes). `immer` is a popular choice. But the reality is that it gets complicated to do this generically; in my view it's usually better to just use the base language where possible, even if it means sprouting some util functions for the various kinds of updates you end up doing.
- antifa 1y agoThere might be a function called produce in one of your immutable/react lib.