On Saturday 2009 January 03 20:56:52 Timothy Brownawell wrote:
> Many commands check for eg the right number of arguments like so:
>
> if (args.size() != 3)
> throw usage(execid);
>
> where others do
>
> N(args.size() == 0,
> F("no arguments needed"));
>
>
> This ought to be made consistent, does anyone object to using the
> 'throw usage();' version everywhere?
I recommend the inverse. Exceptions should be reserved for, well
"exceptional" situations. Validation of inputs doesn't fall into
this category and is more properly handled by normal control loops.
--
JP
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