isEmpty (original) (raw)

Check if an array is empty.

Similar: index, indexRange, size, isEmpty.

function isEmpty(x) // x: an array

const xarray = require('extra-array');

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

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

References

• Data.List.null() : Haskell
• List.isEmpty() : Elm
• Array.length : MDN Web Docs
• Array.isEmpty() : Sugar.js
• std::list::empty() : cppreference.com