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From: Helmut Zeisel <zei2011@liwest.at>
Subject: Re: proposal : keyword default
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Am Montag, 7. Oktober 2013 22:10:01 UTC+2 schrieb Edward Diener:
> On 10/7/2013 3:50 AM, Francis Glassborow wrote:

> > If you stop to consider it, it should be clear that this would have
>
> > been considered right at the start of the design of default arguments
>
> > for C++. It wasn't that it was hard to do, so there must have been
>
> > other reasons (I am pretty sure they will have been mentioned
>
> > somewhere in 'The Design and Evolution of C++')
>
>
>
> You may be crediting Mr. Stroustrup with too much foresight. Nonetheless
>
> if you have any particular discussion to cite about this in D&E or
>
> otherwise I would be glad to peruse it.

Maybe Francis Glassborow refers to 6.5 "Examples of Proposed
Extensions", 6.5.1 "Keyword Arguments".

The last paragraph is

"My main worry about keyword arguments was actually that keyword
arguments might slow the gradual transition from traditional
programming techniques to data abstraction and object-oriented
programming in C++. In code that I find best written and easiest to
obtain, long argument lists are very rare".

IMHO the same can be said about the proposed keyword default and the
same alternatives as in Chapter 6.5.1.1 can be used.

Helmut


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