Functions that every big brain language already has.

Ranges

js
import { range } from 'big-brain.js';

/** * Can be used to make loops */ for (let i of range(3)) { console.log(hello from loop ${i}); } // hello from loop 0 // hello from loop 1 // hello from loop 2

/** * Ranges to Arrays */ Array.from(range(12)); // [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

Array.from(range(11, 18)); // [ 11, 12, 13, 14, 15, 16, 17 ]

Array.from(range(10, 0)); // [ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 ]

Array.from(range(0, 20, 2)); // [0, 2, 4, 6, 8, 10, 12, 14, 16, 18]`

`Random Integers (without having to write the function yourself each time)`


(I always forget how it goes :c)

js
import { randInt } from 'big-brain.js';
randInt(100);
// 40
randInt(1, 5);
// 3
/**
 * Random enough for general purpose
 */
let ints = [];
for (let i of range(10000000)) {
	ints.push(randInt(1, 11));
}
/**
 * Should be 5.5
 */
ints.reduce((previous, current) => current += previous) / ints.length;
// 5.5007626

`Random choice from array`

js
import { randChoice } from 'big-brain.js';
const presidents = ['George Washington', 'John Adams', 'Thomas Jefferson', 'James Madison', 'James Monroe'];

randChoice(presidents); // 'John Adams'`

`Shuffle arrays`


(this doesn't mutate the array)

js
import { shuffleArray } from 'big-brain.js';
let presidents = ['George Washington', 'John Adams', 'Thomas Jefferson', 'James Madison', 'James Monroe'];
shuffleArray(presidents);
// ['James Monroe', 'George Washington', 'James Madison', 'John Adams', 'Thomas Jefferson']
/**
 * Note that the original array is still in order
 */
presidents
// ['George Washington', 'John Adams', 'Thomas Jefferson', 'James Madison', 'James Monroe']

/** * To permanently rearrange, reassign: */ presidents = shuffleArray(presidents); // ['James Monroe', 'Thomas Jefferson', 'George Washington', 'John Adams', 'James Madison']`

`Extract from Iterables`

js
import { first, second, last, rest } from "big-brain.js";
const natoPhoneticAlphabet = ['alpha', 'bravo', 'charlie', 'delta']
first(natoPhoneticAlphabet);
// 'alpha'
second(natoPhoneticAlphabet);
// 'bravo'
last(natoPhoneticAlphabet);
// 'delta'

rest(natoPhoneticAlphabet); // ['bravo', 'charlie', 'delta']``