Re: [gobo-eiffel-develop] Usage of INTEGER_64

[Eric B. <er...@go...>]

Colin Paul Adams wrote:
>>>>>> "Eric" == Eric Bezault <er...@go...> writes:
> 
>     Eric> For consistency with
>     Eric> `is_hexadecimal' I would name the old feature `is_decimal'
>     Eric> (rather than `is_decimal_digits').
> 
> OK.
> And perhaps the header comment should explain that it returns True
> only if every character is a decimal digit from the ASCII block of
> Unicode (there are other sets of decimal digits).

OK. That's what the ELKS spec for `is_integer' does:

     http://www.gobosoft.com/eiffel/nice/elks01/string.html#is_integer

I wonder whether ISE (and hence FreeELKS) accepts leading and
trailing spaces.

>     Eric> what is in ELKS for `is_integer' to see how we can apply it
>     Eric> to `is_integer_64'. As far as I can see, none of those
>     Eric> accepts underscores (unlike Eiffel INTEGER_64 literals).
> 
> What about leading +/-?

They're accepted.

>     >> But then we have an inconsistent story with is_integer. Can we
>     >> rename this to is_decimal_digits? This will break existing
>     >> clients, so we can only do that if the next Gobo release is
>     >> numbered 4.0 (there is a precedent in that the upgrade from 2.0
>     >> to 3.0 broke some existing clients).
> 
>     Eric> Do we need to break code now, or go to the "obsolete" stage
>     Eric> before?
> 
> I guess we can define is_decimal as a duplicate of is_integer for now,
> and mark is_integer as obsolete for the next release.

Yes.

-- 
Eric Bezault
mailto:er...@go...
http://www.gobosoft.com