1.3.0 • Published 4 years ago
parse-numeric-range v1.3.0
node-parse-numeric-range
Parses expressions like 1-10,20-30. Returns an energetic (as opposed to lazy) array.
Supported Expressions
Comprehensive supported expression examples:
| Expression | result |
|---|---|
| [] | |
| 1 | 1 |
| 1,2 | 1,2 |
| -10 | -10 |
| -3,-3 | -3, -3 |
| -1-2,-2 | -1,0,1,2,-2 |
| -1--2 | -1,-2 |
| -1..2,-2 | -1,0,1,2,-2 |
| -1...3,-2 | -1,0,1,2,-2 |
| 1⋯3 | 1,2 |
| 1…3 | 1,2 |
| 1‥3 | 1,2,3 |
What's this useful for? Well, letting users input these sorts of things and then making them programmatically useful.
Usage
First, npm install parse-numeric-range.
const rangeParser = require("parse-numeric-range");
const numbers = rangeParser("4,6,8-10,12,14..16,18,20...23");
console.log(
`The first ${numbers.length} composite numbers are: ${numbers.join(", ")}`,
);ES6
import rangeParser from "parse-numeric-range";
const numbers = rangeParser("4,6,8-10,12,14..16,18,20...23");
console.log(
`The first ${numbers.length} composite numbers are: ${numbers.join(", ")}`,
);