I think meant for function double(array) { return arr.map(x => x + x); } to be function double(array) { return array.map(x => x + x); }
function double(array) { return arr.map(x => x + x); }
function double(array) { return array.map(x => x + x); }
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I think meant for
function double(array) {return arr.map(x => x + x);
}
to be
function double(array) {return array.map(x => x + x);
}