Fuck External Libs

/*

Author: Aamir khan (github.com/iamaamir)
06/Jul/2019/(11.42:PM)

### ENV
  Node v10.15.3
  Ubuntu 18
  Intel Core i5


### LOCAL SYSTEM RESULT
  Pure for loop: 17.150ms
  Functional Js: 691.488ms
  Ramda compose: 667.509ms
  Pure Ramda compose: 9099.204ms
  Rx pipe: 513.282ms
  Pure js lambda with compose: 165.855ms

  ---results---

  loop result 100023979111894
  func result 100023979111894
  Ramda result 100023979111894
  Pure Ramda result 100023979111894
  Rx result 100023979111894
  Pure lambda result 100023979111894

*/

const R               = require('ramda');
const Rx              = require('rxjs');
const { reduce, map } = require('rxjs/operators');

const RANGE = 10000000;
const values = Int32Array.from({ length: RANGE }, _ => Math.random() * RANGE);


console.time('Pure for loop');
let r = 0;
for (let i = 0; i < RANGE; ++i) r += values[i] * 2 + 4;
console.timeEnd('Pure for loop');





console.time('Functional Js');
const r0 = values
    .map(x => x + 1)
    .map(x => x * 2)
    .map(x => x + 2)
    .reduce((a, b) => a + b, 0);
console.timeEnd('Functional Js');




console.time('Ramda compose');
const r1 = R.compose(
    R.reduce((a, b) => a + b, 0),
    R.map(x => x + 2),
    R.map(x => x * 2),
    R.map(x => x + 1),
)(values);
console.timeEnd('Ramda compose');




console.time('Pure Ramda compose');
const r11 = R.compose(
    R.sum,
    R.map(R.add(2)),
    R.map(R.multiply(2)),
    R.map(R.inc),
)(values);
console.timeEnd('Pure Ramda compose');




console.time('Rx pipe');
let rx = 0;
Rx.from(values).pipe(
    map(x => x + 1),
    map(x => x * 2),
    map(x => x + 2),
    reduce((a, b) => a + b, 0),
).subscribe(r => { rx = r });
console.timeEnd('Rx pipe');




console.time('Pure js lambda with compose');
const t = x => x + 2;
const u = x => x * 2;
const v = x => x + 1;
const r2 = values.reduce((a, b) => a + t(u(v(b))), 0);
console.timeEnd('Pure js lambda with compose');



// POC
console.log('\n---results---\n');
console.log('loop result', r);
console.log('func result', r0);
console.log('Ramda result', r1);
console.log('Pure Ramda result', r11);
console.log('Rx result', rx);
console.log('Pure lambda result', r2);