std.getopt suggestion

[Andrei Alexandrescu]

On 9/29/11 8:49 AM, Vladimir Panteleev wrote:
> On Thu, 29 Sep 2011 18:41:33 +0300, Andrei Alexandrescu
> <SeeWebsiteForEmail at erdani.org> wrote:
>
>> It would be quite abnormal to run getopt multiple times in the same
>> app with different configurations. So in this case using globals is
>> _better_, not worse.
>
> How about this: your program uses a logging component. You pass the
> command-line arguments to the logging component, so that it uses getopt
> to pick out the logging options and returns the rest.
>
> One day, the maintainers of the logging component decide to add
> compatibility with Brand X logging component, which uses ':' for the
> equal-sign separator. Naturally the maintainers are sloppy and don't
> restore the option after setting it. You know what happens next...

Sloppy maintainers may also take the GetOpt object by reference, change 
its state, and pass it back.

Andrei