stranges
v1.0.1
Published
An integer range parser
Downloads
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Stranges
An advanced number range parser. It parses number ranges from string.
Installation
npm install stranges
Features
- Parse single and multiple ranges. e.g.
1-10,20-30
- Parse inverted range. e.g.
10-1
- Returns an
Iterator
instead of anArray
which makes thing faster when iterate over million of records. - Reduce memory usage.
Parse single range
import parse from 'stranges';
const iterator = parse('0-9'); // Symbol.iterator
for (const num of iterator) {
console.log(num);
}
// => 0
// => 1
// => 2
// => 3
// => 4
// => 5
// => 6
// => 7
// => 8
// => 9
Parse multiple ranges
import parse from 'stranges';
const iterator = parse('0-3,3-0'); // Symbol.iterator
for (const num of iterator) {
console.log(num);
}
// => 0
// => 1
// => 2
// => 3
// => 3
// => 2
// => 1
// => 0
Calculate Length of Ranges
import { length } from 'stranges';
length('0-9,20-29')
// => 20
Parse as an Array
Allocate an array filled with values.
import { parseAsArray } from 'stranges';
parseAsArray('0-10')
// => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Types
/**
* Calculate total count of ranges.
* @param input a range string
* @param separator a separator use to split each range.
* @returns a total count of ranges.
*/
declare function length(input: string, separator?: string): number;
/**
* Create an array filled with range values.
* @param input a range string
* @param separator a separator use to split each range.
* @returns an array filled with range values.
*/
declare function parseAsArray(input: string, separator?: string): number[];
/**
* Create an iterator of ranges.
* @param input a range string
* @param separator a separator use to split each range.
* @returns an iterator of each number
*/
declare function parse(input: string, separator?: string): Generator<number>;
export { parse as default, length, parseAsArray };