suhaotian · December 29, 2016 08:58
diff --git a/cached.js b/cached.js
 function cached(fn) {
  const cache = Object.create(null)
  return function cachedFn(str) {
    const hit = cache[str]
    return hit || (cache[str] = fn(str))
  }
 }
	function cached(fn) {
	const cache = Object.create(null)
	return function cachedFn(str) {
	const hit = cache[str]
	return hit \|\| (cache[str] = fn(str))
	}
	}