542a4f94b1
Changed original flatten to be named deepFlatten, added normal flatten, improved some other snippets.
213 B
213 B
Flatten array
Use reduce() to get all elements inside the array and concat() to flatten them.
const flatten = arr => arr.reduce( (a, v) => a.concat(v), []);
// flatten([1,[2],3,4) -> [1,2,3,4]