On 01/09/2014 12:25 AM, Marin Barateh wrote:
Hi, Joey,
I'm looking for a way to regard the reverse of alphanumericals as
variables, e.g 3A.
I have a possible solution, wherein i precede string literals starting
with a digit with an underscore character, but is there a more easy
option here?
If not, this may be an optional feature?
I'm afraid there is nothing easier, even so, I'd put at least a letter
before the underscore (variables beginning with _ use to be reserved).
I'll consider to let hexadecimals as variable names, though it's very
irregular: what if at some point in the future libmatheval evolved to
use hex values?
Thanks for your feedback,
Marin
Hi Marin,
That's a good point, but unfortunately, although not common, there are
header files that reserve letters followed by an underscores as well.
/
void evaluator_get_variables (void *evaluator, char ***names, int
*count)/ can not process values like 00FF00 or 0x00FF00.
In the program I'm currently working on,
https://github.com/ozette/roloc, I want to be able to do this for example:
RED+00FF00
Even though 00FF00 is a value, If it were to become a variable in my
case i.e _00FF00 it'd be possible to be reference it with /name[n]/.
A /find_color/ function in the program will then restore eventual values
starting with a _ character.
I agree with hexadecimal values as var names being irregular, so maybe
it's a bad idea after all..
Actually the way the program is written now, the only functions used are
evaluator_create and evaluator_get_variables.
I added libmatheval for eventual future functionality, and because it's
an amazing lib.
Maybe I am better off writing my own "get_variables" function because i
regard to 00FF00 as a string literal instead of a actual number.
Anyhow, if libmatheval were to evolve to support hex someday it'd be
fantastic.
Joey
