30-seconds-of-code/snippets/digitize.md

digitize

Converts a number to an array of digits.

Convert the number to a string, using spread operators in ES6([...string]) build an array. Use Array.map() and parseInt() to transform each value to an integer.

const digitize = n => [...'' + n].map(i => parseInt(i));

differenceWith([1, 1.2, 1.5, 3], [1.9, 3], (a,b) => Math.round(a) == Math.round(b)) // [1, 1.2]