I'am Sorry.
Siva.
________________________________
From: Ryosuke Niwa <rn...@webkit.org>
To: Siva B <bvs.s...@yahoo.com>
Cc: "webkit-dev@lists.webkit.org" <webkit-dev@lists.webkit.org>
Sent: Thursday, October 11, 2012 2:43 PM
Subject: Re: [webkit-dev] Interface design question
webkit-dev doesn't seem like an appropriate place to discuss this topic unless
you have a specific WebKit patch or bug that relates this design question.
On Thu, Oct 11, 2012 at 1:19 PM, Siva B <bvs.s...@yahoo.com> wrote:
Hello,
>
> Have a design related question and hope to hear some insights.
>
> Interfaces using abstract classes impose restriction(s) on it's derived
>implementations.
> - The most widely used restriction is to IMPLEMENT Function(s)
>
> Question:
> Is it permissible to have similar kind of restriction for any data
>members in the interface?
> In a way that if some one wants to implement the interface it also
>must initialize certain variable.
>
> Ex:
>
> Say for a TCP/IP it absolutely necessary to have
peer's IP address and Port number.
> So, is wise to impose a restriction to pass above variable to
>initialize the class.
>
> class IP4Connection
> {
> public:
> explicit IP4Connection( string ip, uint port);
> virtual int send() = 0;
> virtual int listen() = 0;
> virtual int reconnect() = 0;
>
protected:
> std::string ip;
> uint port;
> };
>
>Thanks,
>Siva.
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>
>
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