Fun

Utility library for functional programming in Deno

About

This is a learning project I created because I wanted to understand some concepts in functional programming. Use the library if you want, but keep in mind that it is not meant to be anything serious.

Getting started

One function is exported: fun. You pass a value to it. In return, it gives you functions to apply to your value.

These functions are: map, apply, run and get.

• map -> transform to new type
• apply -> transform within same type
• run -> run arbitrary code
• get -> get your value back

See the example below:

import { fun } from "https://denopkg.com/olaven/fun" 

interface Person { name: string, salary: number }
const person: Person = { name: "joe", salary: 100 }; 

const format_salary = (person: Person) => 
    fun(person)
        .map(person => person.salary)
        .map(salary => salary.toString())
        .apply(salary => `${salary},-`)
        .get();

//prints 100,-
console.log(format_salary(person));