Improve examples

tshemsedinov · tshemsedinov · commit 5aab88bf538e · 2019-11-19T20:43:04.000+02:00
diff --git a/JavaScript/1-memoize.js b/JavaScript/1-memoize.js
@@ -4,7 +4,7 @@ const argKey = x => x.toString() + ':' + typeof x;
 const generateKey = args => args.map(argKey).join('|');
 
 const memoize = fn => {
-  const cache = {};
+  const cache = Object.create(null);
   return (...args) => {
     const key = generateKey(args);
     const val = cache[key];
diff --git a/JavaScript/2-speed.js b/JavaScript/2-speed.js
@@ -4,7 +4,7 @@ const argKey = x => x.toString() + ':' + typeof x;
 const generateKey = args => args.map(argKey).join('|');
 
 const memoize = fn => {
-  const cache = {};
+  const cache = Object.create(null);
   return (...args) => {
     const key = generateKey(args);
     const val = cache[key];
@@ -33,8 +33,7 @@ const speedTest = (name, fn, args, count) => {
 // Usage
 
 const fib = n => (n <= 2 ? 1 : fib(n - 1) + fib(n - 2));
+const mFib = memoize(fib);
 
 speedTest('fib(20)', fib, [20], LOOP_COUNT);
-
-const mFib = memoize(fib);
 speedTest('memoized fib(20)', mFib, [20], LOOP_COUNT);
diff --git a/JavaScript/3-cacheSize.js b/JavaScript/3-cacheSize.js
@@ -24,7 +24,6 @@ const memoize = (fn, length) => {
 // Usage
 
 const max = (a, b) => (a > b ? a : b);
-
 const mMax = memoize(max, 3);
 
 mMax(10, 8);
