这种表达方式是一样的吗 [英] IS BOTH THIS EXPRESSION IS SAME

问题描述

朋友.
我想知道以这种方式声明全局变量是一样的..

1.

hi friends.
i want to know that declaring global variable in this fashion is same or not..

1.

 private static string ab;
public static string abc
{
    get { return ab; }
    set { ab = value; }
}

2.

2.

public static string abc;

推荐答案

是！在这两者之间，您可能需要阅读有关公共变量与属性的文章.

http://www.codinghorror.com/blog/2006/08/properties- vs-public-variables.html [ ^ ]

Yes! In between, you might want to read this article about public variables vs properties.

http://www.codinghorror.com/blog/2006/08/properties-vs-public-variables.html[^]

对于使用您的代码的外部客户端而言，这可能没有多大区别.但是，将变量封装在属性中可以使您验证其值.例如，如果有一个Age字段，则可以将其值限制在1到120之间.使用公共变量将不允许您验证其值.

这是一个示例:

To an external client that uses your code, it may not make much difference. But encapsulating your variables in a Property enables you to validate its value. For example, if there is an Age field, you can restrict its values betweeen 1 and 120 or so. Using public variables will not allow you to validate its values.

Here''s an example:

int _age = 0;
public int Age { 
    get { 
        return _age; 
    }
    set {
        if (_age < 0 || _age > 120) { 
            throw new ArgumentException("Valid values for Age is between 0 and 120."); 
        } 
        _age = value; 
    }
}

这篇关于这种表达方式是一样的吗的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！