Minimal trie datastructure representation. 

Minimal trie datastructure representation

sushimmdutta

trie-d

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const CONSTANT = require('./src/constants/trie');

const ErrorClass = require('./src/errors/trie');

const Node = require('./src/model/node');

     * Delimiter supports String, Positive Integer and undefined.

     * Positive Integer : delimits provided data by number of character count.

     * String(s) : sets up as the that string or regex as the delimiter

     * undefined : treats '' as delimiter.

     * @param  props = { delimiter = 'str' || 1 || undefined }

        let delimiter = _.get(props, 'delimiter');

            if (typeof delimiter === 'number') {

                delimiter = parseInt(delimiter);

                    this.delimeter_type = CONSTANT.COUNT_MATCH;

                    this.delimiter = delimiter;

                    Error.invalidDelimiter(delimiter);

                this.delimiter = delimiter.toString();

                this.delimeter_type = CONSTANT.STR_MATCH;

            return this._addValueToNode(node.getNode(values[0]), values.splice(1));

            const newNode = new Node(values[0]);

            return this._addValueToNode(newNode, values.splice(1));

            const delimiterType = this._getDelimiterType();

            const delimiter = this._getDelimiter();

            if (delimiterType === CONSTANT.COUNT_MATCH) {

                values = this._splitByCount(value, delimiter);

                values = value.split(delimiter);

        if (this._getFirstLevelMap()[firstKey]) {

            const firstNode = this.first_level_map[firstKey];

            return this._addValueToNode(firstNode, values.splice(1));

            const newNode = new Node(firstKey);

            this.first_level_map[newNode.getKey()] = newNode;

            const result = this._getNearMatch([], this._getFirstLevelMap()[firstKey], values.splice(1), firstKey);

            return result.sort(this._lexi);

     *  expects array of strings to be searched in trie

     *  returns the result in order of entry of strings, Unique values.

            result = result.concat(this.nearMatch(value));

     * expects array of strings to be added to trie

            return this._removeValue(firstNode, values.splice(1));

    /** ***************************************************************

     *****************************************************************/

        if (_.isEmpty(str) || !count || count <= 0) {

            const temp = str.substr(start, count);

        return curr.toString().localeCompare(next);

  "description": "Minimal trie datastructure representation",

    "test": "node_modules/gulp/bin/gulp.js test",

    "coveralls": "cat ./coverage/lcov.info | ./node_modules/.bin/coveralls"

    "url": "git+https://github.com/void666/node-trie.git"

    "url": "https://github.com/void666/node-trie/issues"

  "homepage": "https://github.com/void666/node-trie#readme",

#### [npm : trie-d](https://www.npmjs.com/package/trie-d)

[![npm version](https://badge.fury.io/js/trie-d.svg)](https://badge.fury.io/js/trie-d)

[![coverage](https://coveralls.io/repos/github/void666/node-trie/badge.svg?branch=master)](https://coveralls.io/github/void666/node-trie?branch=master)

[![build status](https://travis-ci.org/void666/node-trie?branch=master)](https://travis-ci.org/void666/node-trie)

[![build status](https://travis-ci.org/void666/node-trie.svg?branch=master)](https://travis-ci.org/void666/node-trie)

[![downloads](https://img.shields.io/npm/dt/trie-d.svg)](https://www.npmjs.com/package/trie-d)

[![downloads monthly](https://img.shields.io/npm/dm/trie-d.svg)](https://www.npmjs.com/package/trie-d)

#### Simple trie data structure representation in javascript. Perfect for search on key-press.

- Provides near match result for strings only.

- Delimiter supports positive integer (count of characters), a regex or string.

- Supports soft delete of strings (will not appear in the search result)

- Supports add all , remove all and near match all. Accepts array of strings for processing the stated functionality.

 Following ways can be used to instantiate a Trie. 

 const trie = new Trie(); // Without delimiter, splits string by each character.

 const trieWithRegDelimiter = new Trie ({delimiter : '/n'}); // Regex delimiter (should split string by new line)

 const trieWithCountDelimiter = new Trie({delimiter : 10}); // Count delimiter, splits string by number of 10 characters from start index.

 const trieWithCharacterDelimiter = new Trie({delimiter : 'c'}); // splits string at every instance of character `c`

Following ways can be used to add elements to a Trie

const inputs = ['abc', 'abcd', 'abcdef', 'abcdefgh', 'abcdefg', 'abcf', 'abcaad', 'ab', 'nabc','afg', 'naa', 'de', 'z'];

trie.addAll(inputs); // add all functionality

trieWithRegDelimiter.add("This is amazing.\n I am so happy!\n"); //single element addition.

Following methods can be used to search elements.

Each element is delimited based on the trie's delimiter definition.

// result = ['abc', 'abcd', 'abcdef', 'abcdefgh', 'abcdefg', 'abcf', 'abcaad'];

const resultAll = trie.nearMatch(['abc', 'na']); // multi string search. The result is union of all key word's result. 

// resultAll = ['abc', 'abcd', 'abcdef', 'abcdefgh', 'abcdefg', 'abcf', 'abcaad', 'naa', 'nabc'];

Soft-delete of strings, does not delete the string, but disables it from search.

const resultAfterRemoval = trie.nearMatch('abc');

// resultAfterRemoval = ['abcd', 'abcdef', 'abcdefgh', 'abcdefg', 'abcf', 'abcaad']; // no word `abc`

trie.removeAll(['abcd', 'abcf']); // multi removal.

const resultPostMultiRemoval = trie.nearMatch('abc');

// resultPostMultiRemoval = ['abcdef', 'abcdefgh', 'abcdefg', 'abcaad']; // no word `abcd` and `abcf`

		@@ -184,4 +184,3 @@ 'use strict';
		firstKey = values[0];
		}
		else {
		} else {
		values = value.split('');
		@@ -248,4 +247,3 @@ firstKey = values[0];

		}
		else {
		} else {
		values = value.split(delimiter);
		@@ -252,0 +250,0 @@ }

		{
		"name": "trie-d",
		"version": "1.0.4",
		"version": "1.0.5",
		"description": "Minimal trie datastructure representation",
		@@ -5,0 +5,0 @@ "main": "index.js",

		@@ -6,3 +6,3 @@ ## node-trie
		[![coverage](https://coveralls.io/repos/github/void666/node-trie/badge.svg?branch=master)](https://coveralls.io/github/void666/node-trie?branch=master)
		[![build status](https://travis-ci.org/void666/node-trie?branch=master)](https://travis-ci.org/void666/node-trie)
		[![build status](https://travis-ci.org/void666/node-trie.svg?branch=master)](https://travis-ci.org/void666/node-trie)
		[![downloads](https://img.shields.io/npm/dt/trie-d.svg)](https://www.npmjs.com/package/trie-d)
		@@ -9,0 +9,0 @@ [![downloads monthly](https://img.shields.io/npm/dm/trie-d.svg)](https://www.npmjs.com/package/trie-d)

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