[AskJS] Is There Some Way to Lazy Evaluate Arrays in JavaScript?

• proposal-iterator-helpers

  35 1,224 5.0 HTML

  Methods for working with iterators in ECMAScript

  

Others have mentioned the propsed iterator helpers.

• iter-ops

  21 127 6.2 TypeScript

  Basic operations on iterables

Someone posted this recently. Maybe it'll help?

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• lazy.js

  4 6,026 0.0 JavaScript

  Like Underscore, but lazier

• FxTS

  22 719 8.3 TypeScript

  A functional programming library for TypeScript/JavaScript

  

• linqjs

  2 15 0.0 JavaScript

  Minimalist implementation of LINQ-style extension methods for JavaScript

This is what LINQ does in C#. Many have made js implementations; here's my attempt. Imo the real inefficiency of map/filter is that it allocates a new array for each step.

• fromable

  2 36 0.0 TypeScript

  A Swiss Army Knife for working with JavaScript iterables.

fromable - https://github.com/baron816/fromable

• ramda

  80 23,578 6.6 JavaScript

  :ram: Practical functional Javascript

  

I'm not as familiar with this but I think Ramda can do this with pipe / compose.

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• IxJS

  7 1,294 5.9 TypeScript

  The Interactive Extensions for JavaScript

  

There's also IxJS, which is basically RxJS but for arrays.

• react-table

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true, I could memo other rows while I edit that one row, so in essence, only that one single row would be rerendered every time, but I haven't quite figured out how to do it with react-table lib.

• mpr.kirke.dev

  1 1 9.4 TypeScript

Here is a lazy implementation of map using generators as an example.

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