Re: Modifier ? in lua pattern matching

[Bertrand Mansion <golgote@...>]

Le 26 mai 08 à 21:35, Ico Doornekamp a écrit :
> * On 2008-05-26 Bertrand Mansion <golgote@mamasam.com> wrote  :
>
> > Basically, I have a string that can take these three forms for  
> > example:
> >
> > DATETIME
> > VARCHAR(10)
> > FLOAT(10,2)
> >
> > With perl regex, I could use the ? modifier to have an all in one  
> > pattern
> > like this for example:
> > '^([A-Z]+)(\(([0-9]+)(,([0-9]+))?\))?$'
> >
> > With Lua, do I have to write three different patterns or is there a
> > better solution?
>
> Would this be of any help ?
>
> as = {
>   "DATETIME",
>   "VARCHAR(10)",
>   "FLOAT(10,2)",
> }
>
> for _, a in ipairs(as) do
>   word, arg1, arg2 = a:match("(%w+)%(?(%d*),?(%d*)%)?")
>   print(word, arg1, arg2)
> end

This will work for me because my input does not vary much.
Thank you very much for taking the time to post the snippet :)

--
Bertrand Mansion
Mamasam
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