Socket
Socket
Sign inDemoInstall

natural-compare

Package Overview
Dependencies
0
Maintainers
1
Versions
2
Alerts
File Explorer

Advanced tools

Install Socket

Detect and block malicious and high-risk dependencies

Install

    natural-compare

Compare strings containing a mix of letters and numbers in the way a human being would in sort order.


Version published
Maintainers
1
Install size
6.35 kB
Created

Package description

What is natural-compare?

The natural-compare npm package provides a simple way to perform 'natural' string comparisons. This means it can compare strings in a way that is more intuitive for humans, taking into account numerical values within the strings to order them in a way that makes sense when read. For example, it would order 'item2' before 'item10', which is not the case with traditional ASCII-based string comparison methods.

What are natural-compare's main functionalities?

Natural String Comparison

This feature allows for the comparison of strings containing numerical values in a way that respects the numerical values, rather than comparing them purely as strings. The provided code sample demonstrates sorting an array of strings in a natural order using the package.

"use strict";
var naturalCompare = require('natural-compare');
console.log(['item10', 'item2'].sort(naturalCompare)); // ['item2', 'item10']

Other packages similar to natural-compare

Readme

Source
@version    1.4.0
@date       2015-10-26
@stability  3 - Stable

Natural Compare – Build Coverage

Compare strings containing a mix of letters and numbers in the way a human being would in sort order. This is described as a "natural ordering".

Standard sorting:   Natural order sorting:
    img1.png            img1.png
    img10.png           img2.png
    img12.png           img10.png
    img2.png            img12.png

String.naturalCompare returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Use it with builtin sort() function.

Installation

  • In browser
<script src=min.natural-compare.js></script>
  • In node.js: npm install natural-compare-lite
require("natural-compare-lite")

Usage

// Simple case sensitive example
var a = ["z1.doc", "z10.doc", "z17.doc", "z2.doc", "z23.doc", "z3.doc"];
a.sort(String.naturalCompare);
// ["z1.doc", "z2.doc", "z3.doc", "z10.doc", "z17.doc", "z23.doc"]

// Use wrapper function for case insensitivity
a.sort(function(a, b){
  return String.naturalCompare(a.toLowerCase(), b.toLowerCase());
})

// In most cases we want to sort an array of objects
var a = [ {"street":"350 5th Ave", "room":"A-1021"}
        , {"street":"350 5th Ave", "room":"A-21046-b"} ];

// sort by street, then by room
a.sort(function(a, b){
  return String.naturalCompare(a.street, b.street) || String.naturalCompare(a.room, b.room);
})

// When text transformation is needed (eg toLowerCase()),
// it is best for performance to keep
// transformed key in that object.
// There are no need to do text transformation
// on each comparision when sorting.
var a = [ {"make":"Audi", "model":"A6"}
        , {"make":"Kia",  "model":"Rio"} ];

// sort by make, then by model
a.map(function(car){
  car.sort_key = (car.make + " " + car.model).toLowerCase();
})
a.sort(function(a, b){
  return String.naturalCompare(a.sort_key, b.sort_key);
})
  • Works well with dates in ISO format eg "Rev 2012-07-26.doc".

Custom alphabet

It is possible to configure a custom alphabet to achieve a desired order.

// Estonian alphabet
String.alphabet = "ABDEFGHIJKLMNOPRSŠZŽTUVÕÄÖÜXYabdefghijklmnoprsšzžtuvõäöüxy"
["t", "z", "x", "õ"].sort(String.naturalCompare)
// ["z", "t", "õ", "x"]

// Russian alphabet
String.alphabet = "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя"
["Ё", "А", "Б"].sort(String.naturalCompare)
// ["А", "Б", "Ё"]

Licence

Copyright (c) 2012-2015 Lauri Rooden <lauri@rooden.ee>
The MIT License

Keywords

FAQs

Last updated on 22 Jul 2016

Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc