Hi all, I'm trying to somewhat abuse the boost program_options library for configuring large simulations of digital systems. One feature that I need is the initialization of arrays (and any object supporting an operator []). For instance for a block containing a register file I'd like to be able to say things like: [block] regs[10] = 0 even nicer if the index was not contrained to be an integer. For instance [block] regs[0..5] = 1 would be an handy way for initializing a range of locations. Now, as far as I can tell, both these uses are not supported by the library. Having to modify the library itself, a quick (and obviously dirty) change would be to check for [] when parsing the option name and stuffing it as prefix to the value so that user defined parsers can take care of it. Just for clarity, what I mean is to turn: [block] regs[0..5] = 1 into: [block] regs = [0..5]1 With an appropriate type declaration for regs we can cause the appropriate user defined parser for doing the validation. So I guess I have three questions: - would be an extension to program_options to take care of the initialization of array-like object considered of general enough interest to deserve a place in the library? - if not, does the quick-and-dirty approach outlines seem viable to people familiar with the program_options library? - any other suggestions for a cleaner/more general implementation? Thanks a lot for any suggestions. Best regards, Maurizio