size

Counts the number of values.

Similar: index, indexRange, size.

iterable.size(x, i, I);
// x: an iterable
// i: start index (0)
// I: end index (end)

const iterable = require('extra-iterable');

var x = [2, 4, 6, 8];
iterable.size(x);
// 4

iterable.size(x, 1);
// 3

iterable.size(x, 1, 3);
// 2

references

• Array.prototype.slice(): MDN web docs