Re: Eye Reasoner Builtin/N3 question/challenge

Indeed and for reasoning with time we have https://www.w3.org/TR/rif-dtb/
implemented in eye see
https://github.com/josd/eye/blob/master/reasoning/rif/rifP.n3

dunno what coalesce is, maybe something like in
https://github.com/phochste/Notation3-By-Example/blob/main/string/concatenation.n3
?

Jos

-- https://josd.github.io


On Mon, Oct 3, 2022 at 5:02 PM tim duval <tim.duval11@gmail.com> wrote:

> I found that string:matches() looks like it can satisfy handling regular
> expressions
>
> Just the other two that I could use some help.
>
>
>
> On Mon, Oct 3, 2022 at 10:24 AM, tim duval <tim.duval11@gmail.com> wrote:
>
>> Hi!
>>
>> We are on the verge of implementing N3 for a product I am helping a
>> client develop and in their due diligence, they are providing me with
>> challenges to identify what the N3 equivalent is, e.g., Let's see if N3 can
>> handle this!! (suffice to say there is a little skepticism)....
>>
>> Most of the list is easy to handle, though a few of them stuck out to me
>> that it would be best to ask the community how these might be represented
>> in N3 (built-in wise):
>>
>> *Coalesce:*
>> Coalesce(@StatusCode,'123')
>>
>> *Regex expressions:*
>> how can regular expressions be used??
>> e.g., substring('13.4 kv', '(([0-9]+.*)*[0-9]+)') as decimal --> returns
>> 13.4
>>
>> *Convert time to current/provided timezone:*
>>
>> session-created-date-utc = "2022-08-15 18:57:40"
>>
>> current-timezone = 'CDT'
>>
>> result is:  "2022-08-15 12:57:40"
>>
>>
>> Any help is appreciated
>>
>>
>> Thanks!
>>
>>
>> Tim Duval
>>
>>
>>