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@types/d3-collection

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@types/d3-collection

TypeScript definitions for D3JS d3-collection module v1.0.1

  • 1.0.4
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What is @types/d3-collection?

@types/d3-collection provides TypeScript type definitions for the d3-collection module, which is part of the D3.js library. This module is used for creating and manipulating associative arrays and sets, which are useful for data manipulation and transformation tasks.

What are @types/d3-collection's main functionalities?

Creating a Map

This feature allows you to create a map (associative array) and set key-value pairs. The code sample demonstrates how to create a map, set values, and retrieve a value by its key.

const d3 = require('d3-collection');
const map = d3.map();
map.set('key1', 'value1');
map.set('key2', 'value2');
console.log(map.get('key1')); // Output: 'value1'

Creating a Set

This feature allows you to create a set and add values to it. The code sample demonstrates how to create a set, add values, and check if a value exists in the set.

const d3 = require('d3-collection');
const set = d3.set();
set.add('value1');
set.add('value2');
console.log(set.has('value1')); // Output: true

Nest Data

This feature allows you to nest data based on a key. The code sample demonstrates how to nest an array of objects by a specific key, resulting in a hierarchical structure.

const d3 = require('d3-collection');
const data = [
  {category: 'A', value: 1},
  {category: 'B', value: 2},
  {category: 'A', value: 3}
];
const nestedData = d3.nest()
  .key(d => d.category)
  .entries(data);
console.log(nestedData);

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Package last updated on 12 Sep 2016

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