proposal-change-array-by-copy
proposal-symbols-as-weakmap-keys
proposal-change-array-by-copy | proposal-symbols-as-weakmap-keys | |
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14 | 4 | |
510 | 90 | |
- | - | |
3.1 | 0.0 | |
9 months ago | over 1 year ago | |
HTML | ||
- | MIT License |
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proposal-change-array-by-copy
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Records and Tupples in JavaScript
The new change array by copy methods (ES2023) will also work with tuples. So while you can't
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JavaScript's New Features: Exploring the Latest Additions to the Language
Change Array by Copy
- ES2023 candidate source code + spec
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[AskJS] Is JavaScript missing some built-in methods?
Stage 3 Change array by copy proposal offers methods like sortTo() that return a new array instead of mutating the original.
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Sorry for the bad quality, can someone please explain how this code arranges the numbers in the array from smallest to biggest ? what does a-b do ?
Note: there's a stage 3 proposal that introduces copy = arr.toSorted().
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Updates from the 94th TC39 meeting
Change Array by Copy: Provides additional methods on Array.prototype and TypedArray.prototype to enable changes on the array by returning a new copy of it with the change.
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New ECMAScript 23 array features
The proposal is described here, with the other methods being:
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Upcoming ECMAScript features I'm excited about
Proposal, Polyfill
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Some functions modify the Array, others do not. Why? Is there a way to "filter" those functions?
You're unlikely to see any new methods being added to JavaScript's Array that would modify an array in place like reverse() and sort() do. In fact some of the new methods that are being added are versions of reverse() and sort() (and splice()) that create copies rather than modifying the originals. Read more about them here: Proposal: Change Array by copy.
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Future Javascript: New Array Methods Coming soon
Since cloning is so common, a new specification has been written which has reached stage 3, which will give us a host of new ways to copy and then change an array. This proposal is called the "Change Array by Copy" proposal. Let's take a look at how it works.
proposal-symbols-as-weakmap-keys
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JavaScript's New Features: Exploring the Latest Additions to the Language
Symbols as WeakMap keys
- ES2023 candidate source code + spec
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Updates from the 94th TC39 meeting
Symbols as WeakMap keys: Permit Symbols as keys in WeakMaps, entries in WeakSets and WeakRefs, and registered in FinalizationRegistries
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Updates from 82nd meeting of TC39
Symbols as WeakMap keys: This proposal extends the WeakMap API to allow usage of unique Symbols as keys.
What are some alternatives?
proposal-set-methods - Proposal for new Set methods in JS
proposal-symbol-predicates - A proposal to introduce ways to differentiate symbols
proposal-arraybuffer-transfer - Proposal to add ArrayBuffer.prototype.transfer
proposal-accessible-object-hasownproperty - Object.hasOwn() proposal for ECMAScript
proposal-symbol-proto - TC39 proposal for mitigating prototype pollution
zod - TypeScript-first schema validation with static type inference
proposal-import-assertions - Proposal for syntax to import ES modules with assertions [Moved to: https://github.com/tc39/proposal-import-attributes]
proposal-iterator-helpers - Methods for working with iterators in ECMAScript
proposal-async-context - Async Context for JavaScript
temporal-polyfill - Polyfill for Temporal (under construction)
proposal-private-methods - Private methods and getter/setters for ES6 classes