Relvance of 'public' contructor in abstract class.

Posted by Amby on Stack Overflow See other posts from Stack Overflow or by Amby
Published on 2010-04-30T05:12:11Z Indexed on 2010/04/30 5:17 UTC
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Is there any relevance of a 'public' constructor in an abstract class? I can not think of any possible way to use it, in that case shouldn't it be treated as error by compiler (C#, not sure if other languages allow that).

Sample Code:

internal abstract class Vehicle
    {
        public Vehicle()
        {            
        }
    }

The C# compiler allows this code to compile, while there is no way i can call this contructor from the outside world. It can be called from derived classes only. So shouldn't it allow 'protected' and 'private' modifiers only. Please comment.

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