VictorMedeiros · August 2, 2016 17:57
diff --git a/quando-nao-usar-arrow-function9.js b/quando-nao-usar-arrow-function9.js
 let multiply = (a, b) => b === undefined ? b => a * b : a * b;  
 let double = multiply(2);  
 double(3);      // => 6  
 multiply(2, 3); // => 6
	let multiply = (a, b) => b === undefined ? b => a * b : a * b;
	let double = multiply(2);
	double(3); // => 6
	multiply(2, 3); // => 6