[Javascript] Avoid Creating floats if they are not needed

What makes an inferred latch?For combinatorial logic, the output of the circuit is a function of input only and should not contain any memory or internal state (latch). In Verilog, a variable will keep its previous value if it is not assigned a value

It is often appropriate to reuse a single object instead of creating a new functionally equivalent object each time it is needed.Reuse can be both faster and more stylish.An object can always be reused if it is immutable. String s=new String(“no”); 

在javascript语言里面,一切皆是对象,对象是它的灵魂,值得我们学习和领悟对象的概念和使用,下面我会引用实例来进行说明. 1)创建对象 方法一:js的对象方法构造 var cody = new Object();   //produces an Object() object cody.living = true; cody.age = 33; cody.gender = 'male'; cody.getGender = function(){return cody.gender;}; c

String s = new String("stringette"); // DON'T DO THIS! The improved version is simply the following: String s = "stringette"; 根据生日来判断是否是婴儿潮时期出生的,isBabyBoomer()是一个糟糕的设计,每次调用这个方法都会创建Calendar,TimeZone以及2个Date对象实例,当此方法被频繁调用时将会非常地影响性能. publ

春节闲点,可以安心的梳理一下以前不是很清楚的东东.. 看的是以下几个URL: http://web.jobbole.com/82520/ http://blog.csdn.net/luoweifu/article/details/41466537 http://javascriptissexy.com/understand-javascript-closures-with-ease/ http://javascriptissexy.com/javascript-variable-scope-an

Chapter 1 Good Parts: JavaScript is an important language because it is the language of the web browser. The very good ideas include functions, loose typing, dynamic objects, and an expressive object literal notation. The bad ideas include a programm

ref: book "Effective Java" 1. consider static factory methods instead of constructord 2. consider a builder when faced with many constructor parameters 3. enforce the singleton property with a private constructor or an enum type 4. enforce nonin

This is a set of coding conventions and rules for use in JavaScript programming. It is inspired by the Sun document Code Conventions for the Java Programming Language. It is heavily modified of course because JavaScript is not Java. The long-term val

本文转自:http://www.asp.net/mvc/overview/older-versions/getting-started-with-ef-5-using-mvc-4/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application Creating an Entity Framework Data Model for an ASP.NET MVC Application (1 of 10) By