Re: Cast to derived class?

Juha Nieminen <nospam@thanks.invalid>
Mon, 12 Nov 2007 19:32:15 +0200
Alf P. Steinbach wrote:

    int getA() {
        return a_;

The prefix "get" serves no useful purpose. It just clutters the code
and incorrectly indicates some dynamic action to obtain the value.

  What kind of strange principle is that?

  So what if it "incorrectly indicates some dynamic action"? It's a
public interface. You *don't know* what it does inside. You *don't care*
what it does inside. It could perform an SQL database search for all you
know. The only thing you care is what it's defined to do, ie. it returns
a specified value, and that's it.

  "get<something>()" is a perfectly valid and good member function name.
It's descriptive and concise, and above all, it's abstract. It hides the
actual implementation, which is good.

  If it was somehow named after what it actually does (eg. simply
returns a member variable), then what happens if in the future its
implementation is changed to something else? Are you going to change the
name of the function to reflect that?

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