isEmpty

Check if an iterable is empty.

Similar: index, indexRange, size, isEmpty.

function isEmpty(x)
// x: an iterable

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

var x = [1, 2, 3];
xiterable.isEmpty(x);
// → false

var x = [];
xiterable.isEmpty(x);
// → true

References

• Data.List.null: Haskell
• List.isEmpty: elm
• Array.length: MDN web docs