poly-select

    1.0.0 • Public • Published

    poly-select

    Picks given keys and associated values from an object or array

    Motivation

    When working data transformation pipelines, it is often needed to be able to filter out unused data leaving only a few pieces for downstream processing.

    This tool is effectively a shorthand version of:

       filter((x, key) => selectedKeys.indexOf(key) >= 0)
    

    Features

    • Works with objects and arrays
    • Automatically curried

    Installation

    npm install poly-select
    

    Testing

    npm test
    

    Usage

    var select = require('poly-select');
     
    var object = {
      a: 100,
      b: 200,
      c: 'blah, blah'
    };
     
    var array = [
      100,
      200,
      'blah, blah'
    ];
     
    // Complete application
    console.log(select(['a', 'c'], object)); // => { a: 100, c: 'blah, blah' }
    console.log(select([0, 2], array)); // => [100, 'blah, blah']
     
    // Partial application
    var selectB = select('b');
    console.log(selectB(object)); // => { b: 200 }
     
    var select1 = select(1);
    console.log(select1(array)); // => [200]

    Install

    npm i poly-select

    DownloadsWeekly Downloads

    4

    Version

    1.0.0

    License

    Apache-2.0

    Last publish

    Collaborators

    • machobearstudio