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/* jshint esnext: true */
// var hoisting
console.log(num);     // => undefined
var num;
num = 10;
console.log(num);     // => 10
// function hoisting
console.log(getPi);   // => function getPi() {...}
console.log(getPi()); // => 3.14
function getPi() {
  return 3.14;
}
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