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关于C#的问答

2014年05月09日22:25 阅读: 25627 次

标签: 关于C#的问答

Q:C#支持多继承吗?

A:不

 

Q:protected class访问级别如何?

A:允许本类和子类访问

Q:private class变量可以被继承吗?

A:行,但不能被访问,但可以被继承

Q:描述一下protected internal

A:只有派生类型或同一程序集中的类型才能访问该成员.

Q:What does the term immutable mean?

A:The data value may not be changed.  Note: The variable value may be changed, but the original immutable data value was discarded and a new data value was created in memory.

Q:System.String 和System.Text.StringBuilder 的区别?

Q:能将不同类型的数据存在System.Array中吗?

A:不能

Q:System.Array.CopyTo( ) 和 System.Array.Clone( )区别?

A:The Clone( ) method returns a new array ( a shallow copy ) object containing all the elements in the original array.  The CopyTo( ) method copies the elements into another existing array.  Both perform a shallow copy.  A shallow copy means the contents ( each array element ) contains references to the same object as the elements in the original array.  A deep copy ( which neither of these methods performs ) would create a new instance of each element's object, resulting in a different, yet identacle object.

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