JS Number extensions with Metho

Following on from the previous introduction to Metho, I decided to throw together metho-number as a real example of what it allows you to make.

Ruby developers may well recognise some of these number methods:

import {
  hex, bin, base, even, odd, ceil, floor, round,
  next, pred, gcd, chr, to, of, times, abs
} from 'metho-number'

254[hex]         // 'fe'
23[bin]          // '10111'
45[base(13)]     // '36'
12[even]         // true
218[odd]         // false
36.2[ceil]       // 37
18.9[floor]      // 18
41.5[round]      // 42
3[next]          // 4
8[pred]          // 7
36[gcd(81)]      // 9 (greatest common divisor)
65[chr]          // 'A'
(-8)[abs]        // 8

5[to(2)]             // [5, 4, 3, 2]
2[to(8, {step: 2})]  // [2, 4, 6, 8]

3[of('x')]              // ['x', 'x', 'x']
3[of(<div>text</div>)]  // Works just fine in JSX

3[times('Go!')]  // 'Go!Go!Go!'
10[times(()=>alert('Hello'))]  // run the function 10 times

All of these extensions to the native Number type should be safe to use in any project.

What do you think? What would you add? Useful library or interesting toy? Would you like to see perhaps metho-string and metho-array?

jonrandy / metho

A new method for methods

jonrandy / metho-number

Number prototype extensions

Comments

[Jon Randy 🎖️]

Bringing destructuring into the mix:

const {[bin]: binary, [hex]: hexidecimal, [base(8)]: octal} = 16

console.log(binary) // "10000"
console.log(hexidecimal) // "10"
console.log(octal) // "20"