3 ms·
`(a)` isn't allowed because letters aren't allowed, and you can't put a number in the argument location (e.g. `((1) => 2)(3)` doesn't parse as valid JS).
by Groxx 8y ago
`(a)` isn't allowed because letters aren't allowed, and you can't put a number in the argument location (e.g. `((1) => 2)(3)` doesn't parse as valid JS).
- spraak 8y agoA commenter above offered ((//)=>5)(//)