rangestar

Range*

Another range array generator. Written in TypeScript, well tested, no floating-point BS, super fast and tiny.

Installation

yarn add rangestar

Examples

Supports generators...

const range = require('rangestar');

for (const r of range.rangeGenerator(3)) {
	console.log(r);
}

// 0
// 1
// 2

for (const r of range.rangeGenerator(1, 3)) {
	console.log(r);
}

// 1
// 2

...and arrays...

const a = range.rangeArray(3);
console.log(a);

// [0, 1, 2]

const b = rangeArray(3, 3.4, 0.1);
console.log(b);

// [3, 3.1, 3.2, 3.3]

...and humans:

const lodashRange = require('lodash.range');
const c = lodashRange(3, 3.4, 0.1);
console.log(c);

// [3, 3.1, 3.2, 3.3000000000000003]
// WHAT THE F$#%?

API

The START value will be included in the result, while STOP will not.

Range generator

// From 0 to STOP:
range.rangeGenerator(STOP: number): Generator<number>

// From START to STOP with optional STEP:
range.rangeGenerator(START: number, STOP: number, STEP?: number): Generator<number>

Range array

Same concept.

// From 0 to STOP:
range.rangeGenerator(STOP: number): number[]

// From START to STOP with optional STEP:
range.rangeGenerator(START: number, STOP: number, STEP?: number): number[]

Benchmarks

Use yarn benchmark to run the benchmarks. Python and Bash are required.

Library	Results
Range*	14.424ms
Lodash	13.017ms
range	19.874ms
Python range	20.853ms

Credits

This library is based on Lodash's range function.