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Yes, it stems from arrays. But extends from there to any collection, built in or custom. Kind of bridges the built in type system but it's really about the expr
by afandian 7y ago
Yes, it stems from arrays. But extends from there to any collection, built in or custom. Kind of bridges the built in type system but it's really about the expressivity of the language.
It becomes especially important in React where you share objects up and down an immutable structure of objects.
- zachrose 7y agoYep. If you've bitten the apple of JavaScript tooling you can kinda sorta rig up compiler-enforced immutable data structures with TypeScript. But IMO if you're going that far it's much easier/well-documented to just use Elm or something.