Re: Using Get() and Set() instead of accessing the variable directly

"Doug Harrison [MVP]" <>
Wed, 21 Mar 2007 13:37:16 -0500
On Tue, 20 Mar 2007 21:18:34 -0500, Joseph M. Newcomer
<> wrote:

If Set is not public, how do you set anything? Note that 'friend' is not a good
programming concept (Stroustrup added it to save a coworker from a problem and has said
that in retrospect he thought it was a bad idea).

I heard someone else say that years ago, and I'm curious what the origin
is. Here's a link to my reply (in 1997, no less, sheesh I remember some
useless things):
In "The Design and Evolution of C++", page 53, Stroustrup has this to
say about friendship declarations:

"It is an explicit and specific part of a class declaration.
Consequently, I have never been able to see the recurring assertions
that a friend declaration "violates encapsulation" as anything but a
combination of ignorance and confusion with non-C++ terminology."

Here's what Stroustrup says in his FAQ:
Does "friend" violate encapsulation?
No. It does not. "Friend" is an explicit mechanism for granting access,
just like membership. You cannot (in a standard conforming program) grant
yourself access to a class without modifying its source.

Doug Harrison
Visual C++ MVP

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