Product

monoid. Product

new Product()

The Product monoid. Product can be used to multiply multiple numbers into a final number via concatenation

Version:
  • 3.0.0
Source:
Example
const {Product} = require('futils').monoid;

Product(1); // -> Product(1)

Product(1).value; // -> 1

Extends

  • module:generics/Show
  • module:generics/Eq
  • module:generics/Ord

Methods

(static) empty() → {Product}

Monoid implementation for Product. Returns a Product of 1

Source:
Returns:
Type:
Product

The empty Product

Example
const {Product} = require('futils').monoid;

Product.empty(); // -> Product(1)

(static) of(a) → {Product}

Lifts a value into a Product. Returns a Product of 1 if the value isn't a number

Source:
Parameters:
Name Type Description
a any

The value to lift
Returns:
Type:
Product

A new Product

Example
const {Product} = require('futils').monoid;

Product.of(2);    // -> Product(2)
Product.of(null); // -> Product(1)
Product.of({});   // -> Product(1)

concat(a) → {Product}

Concatenates a Product with another using multiplication

Source:
Parameters:
Name Type Description
a Product

The Product instance to concatenate with
Returns:
Type:
Product

A new Product

Example
const {Product} = require('futils').monoid;

const product = Product(2);

product.concat(Product(2)); // -> Product(4)