added try catch section

README.md

@@ -12,11 +12,11 @@ function Point(x, y) {
   this.y = y;
 }
 
-var p1 = new Point(11, 22);
-var p2 = new Point(33, 44);
+var p1 = new Point(11, 22); // => hidden Point class created
+var p2 = new Point(33, 44); // => hidden Point class shared with p1
 // At this point, p1 and p2 have a shared hidden class
-p2.z = 55;
-// warning! p1 and p2 now have different hidden classes!
+
+p2.z = 55; // => another hidden class (Point') created, p1 !== p2
 ```
 
 This might lead you to question how JavaScript performance could ever get anywhere close to C++. However, V8 has hidden types created internally for objects at runtime; objects with the same hidden class can then use the same optimized generated code.
@@ -178,14 +178,14 @@ The `Math` object contains properties and metods designed to make mathematical o
 
 Each of these values is precalculated, so there is no need for you to calculate them yourself. There are also method to handle mathematical calculations:
 
-| Method                  | Meaning                     |
-|-------------------------|-----------------------------|
-| `Math.abs(num)`         | The absolute value of num   |
-| `Math.exp(num)`         | Math.e**num                 |
-| `Math.log(num)`         | The logarithm of num        |
-| `Math.pow(num, power)`  | num**power                  |
-| `Math.sqrt(num)`        | The square root of num      |
-| `Math.acos(x)`          | The arc cosine of x         |
+| Method                  | Meaning                   |
+|-------------------------|---------------------------|
+| `Math.abs(num)`         | The absolute value of num |
+| `Math.exp(num)`         | Math.e**num               |
+| `Math.log(num)`         | The logarithm of num      |
+| `Math.pow(num, power)`  | num**power                |
+| `Math.sqrt(num)`        | The square root of num    |
+| `Math.acos(x)`          | The arc cosine of x       |
 
 
 ## Variable access over array/object access.
@@ -324,6 +324,10 @@ Is possible that you can gain an extra of perfomance using String method to matc
 
 Check [test#1](https://jsperf.com/regexp-test-search-vs-indexof/12), [test#2](https://jsperf.com/regex-methods-x-1/2) & [test#3](https://jsperf.com/test-vs-indexof-fast/5) benchmarks.
 
+## Don't handle too much code in a try/catch
+
+Certain constructs like `try/catch` are considered not optimizable for the JavaScript engine, so avoid handle business logic inside. Just for pass an error as callback and this type of things.
+
 ## Avoid .bind, is slower.
 
 In general terms, `.bind` the context with a `Function` generate need a considerable effort.