array-range

Python-like range(from, to, steps) in JavaScript.

Installation

Install with component(1):

$ component install helplet/array-range

Usage

varrange=require("array-range");console.log(range(4));// [0, 1, 2, 3]console.log(range(-4));// [0, -1, -2, -3]console.log(range(1,4));// [ 1, 2, 3]console.log(range(-1,4));// [-1, 0, 1, 2, 3]console.log(range(-1,-4));// [ -1, -2, -3]console.log(range(1,-4));// [ 1, 0, -1, -2, -3]console.log(range(1,5,2));// [1, 3]console.log(range(1,5,-2));// [1, 3]console.log(range(1,3,.5));// [1, 1.5, 2.5]// You can also mount `range` to the Array.prototypeArray.prototype.range=range;vararr=[1,2,3];arr.range(5);console.log(arr);// [1, 2, 3, 0, 1, 2, 3, 4];// You can also bind it to an arrayvararr=[],addRange=range.bind(arr);addRange(3);addRange(5,10);console.log(arr)// [0, 1, 2, 5, 6, 7, 8, 9]// And you can call it on an arrayvararr=[];range.call(arr,3);range.call(arr,5,10);console.log(arr)// [0, 1, 2, 5, 6, 7, 8, 9]// ????// PROFIT!!!

API

range([from], to, [steps])

Returns and array containing the numbers fromto in steps.

from can be omitted or null, which is interpreted as 0. It can be negative and is included in the array. tois not included in the array. It can be negative. steps can be omitted or null, which is interpreted as 1. steps can be negative and will be converted with Math.abs(steps). If to is smaller than from, the increment direction will be inversed (negative).

If range's context is an array, it will push the values to that array. (Array.prototype.range = range, range.bind(arr))

License

MIT