What does => do and what is it called in the context below?

Question

What does (a=>) do in the context below?

function findOutlier(int){
  var even = int.filter(a=>a%2==0);
  var odd = int.filter(a=>a%2!==0);
  return even.length==1? even[0] : odd[0];
}

Those are [arrow functions.](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions) I'd suggest reading [this question](http://stackoverflow.com/questions/34361379/arrow-function-vs-function-declaration-expressions-are-they-equivalent-exch) to get a good feel for them. — Mike Cluck, Mar 25 '16 at 21:57

score 0 · Accepted Answer · answered Mar 25 '16 at 21:58

0

Those are called fat arrow functions. In this case, it's the same as

int.filter(function(a){ return a%2==0});

answered Mar 25 '16 at 21:58

Ruan Mendes

1 Answers1