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hof6.html
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hof6.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
function memo(fn) {
var cache = {};
return function(args) {
if(!cache[args]) {
cache[args] = fn(args);
}
return cache[args];
}
}
function fibanocci(num) {
return (num == 0 || num == 1)? num : fibanocci(num - 1) + fibanocci(num - 2);
}
var memFib = memo(fibanocci); // Closure --> fn : fibanocci and cache: {}
console.time("first");
console.log(memFib(34));
console.timeEnd("first");
console.time("second");
console.log(memFib(34));
console.timeEnd("second");
</script>
</body>
</html>