Love the playground on the proposal! Hope this becomes more commonplace
Immutable data structures may be coming to JS.
If you enjoy playing with bleeding edge features, please try out the TC39 Stage 1 proposal "Records & Tuples" in this browser playground created by @rickbutton.
https://rickbutton.github.io/record-tuple-playground/#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 …
Original Proposal:https://github.com/tc39/proposal-record-tuple …
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agreed! that's a usecase I think we should definitely help with in the future: easy to share, test, provide feedback and test cases, iterate
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Coolest news of the day :)
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Hrmmmm. Why isn't `Map` and `Set` just updated to be immutable?
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Map and Set are still objects, and because they aren't primitives, their equality is referential. With records and tuples, === compares the structural equality of values, in the same way a string does. There is a proposal for read-only collections here:https://github.com/tc39/proposal-readonly-collections …
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