https://github.com/mustaddon/iterq

Memory usage optimization in cascading iterable queries
https://github.com/mustaddon/iterq

Last synced: 8 months ago
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Memory usage optimization in cascading iterable queries

• Host: GitHub
• URL: https://github.com/mustaddon/iterq
• Owner: mustaddon
• License: mit
• Created: 2022-08-24T17:26:53.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2022-08-27T17:59:40.000Z (almost 4 years ago)
• Last Synced: 2025-02-01T02:34:31.606Z (over 1 year ago)
• Language: TypeScript
• Homepage:
• Size: 59.6 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# iterq [![npm version](https://badge.fury.io/js/iterq.svg)](https://www.npmjs.com/package/iterq)

Memory usage optimization in cascading iterable queries

```ts

import { IterQuery } from "iterq";

let query = new IterQuery('someone iterable object for example')

    // filtering doesn't generate any arrays

    .filter(x => x != ' ')

    // grouping will create one temp Map, but only after executing the query

    .group(x => x)

    // mapping doesn't generate any arrays

    .map(g => ({ char: g[0], count: g[1].length }))

    // take/skip works like a filter

    .take(4); 

// query execution. callbacks/predicates has not been executed before this line

for (let x of query)

    console.log(x);

//// Console output:

// {char: 's', count: 1}

// {char: 'o', count: 4}

// {char: 'm', count: 2}

// {char: 'e', count: 7}

```