[Pharo-dev] , for vector creation

Tudor Girba tudor at tudorgirba.com
Thu Oct 26 04:24:17 EDT 2017


Hi,

> On Oct 26, 2017, at 7:00 AM, Nicolai Hess <nicolaihess at gmail.com> wrote:
> 
> 
> 
> Am 25.10.2017 10:50 PM schrieb "Torsten Bergmann" <astares at gmx.de>:
> Hi,
> 
> there might be reasons for an own 2D vector class (instead of using Point).
> But still I dislike the reimplementation of  "," because for me so far it
> has the meaning of "concatenating things".
> 
> 
> Like concatenating coordinates :-)

Indeed, this is what we see it as well.

Doru

> 
> 
> 
> Here you redefine it to create vector instances and it works only up to three
> so far. Right?
> 
> I understand that this gives some similarities with the math notation (1,2)
> but I personally would prefer to use:
> 
>     1 at 2 asVector
> 
> or  Vector2D x: 1 y: 2
> 
> Thx
> T.
> 
> 
> 
> > Gesendet: Mittwoch, 25. Oktober 2017 um 20:06 Uhr
> > Von: "Tudor Girba" <tudor at tudorgirba.com>
> > An: "Pharo Development List" <pharo-dev at lists.pharo.org>
> > Betreff: [Pharo-dev] , for vector creation
> >
> > Hi,
> >
> > As mentioned in the separate thread, we played with introducing the extension:
> >
> > , aNumber
> >       ^ BlVector2D x: self y: aNumber
> >
> > This means that (10,20) will return a 2D vector.
> >
> > We also have (10,20,30) which returns a 3D vector.
> >
> > , is used for different meanings already in the image beside the collection concatenation. For example, in FileReference is adds a file extension. And Exceptions create a collection. In other packages, PetitParser uses it as a sequence operator.
> >
> > Please voice your concerns.
> >
> > Cheers,
> > Doru
> >
> >
> > --
> > www.tudorgirba.com
> > www.feenk.com
> >
> > "Every thing should have the right to be different."
> >
> >
> >
> >
> >
> >
> 
> 

--
www.tudorgirba.com
www.feenk.com

"Obvious things are difficult to teach."








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