Re: [Boost-users] program_options

OvermindDL1 wrote:

On Mon, Dec 7, 2009 at 9:37 AM, Larry wrote:

...

Actually, I think you can setup through the mostly undocumented style_t enumeration for using a "/" but it is not automatic as I recall. See cmdline.hpp for the style_t definition. It also took a little looking to figure out how to set style_t. I did it once a couple of years ago and I forget offhand how I did it but could find it if needed.

That is something I do like about the windows format using / instead of -. I have used a few windows command-line apps that use / to specify options, - to remove something, and + to add something. Makes more sense to me over all; would be nice to have program_options support that style as well.

Example: someapp /input=file.tst -optimize +abc Means: the input is file.tst, you disable optimizations, and you enable automatic bounds checking or whatever...

FWIW, this +something -whatever convention is similar to -fno-something/-fsomething convention such as used, e.g., by gcc. One can use a custom parser to support either, I think there's example of the latter style. - Volodya