[Squeakland] Random

[JOHN VOIKLIS]

Hi Scott,

I haven't, as yet, figured out what I would do with such a feature,
but it seems cool and, after I banged on it for a bit, it works great.

Best,

John

On 4/13/05, Scott Wallace <scott.wallace at squeakland.org> wrote:
> At 8:26 AM -0700 4/12/05, Alan Kay wrote:
> >
> >... That we can't simply drop a variable name on Random (and extend
> >it for arithmetic) is a bug and should be fixed in this version of
> >etoys or the next.
> 
> The solution to this requires implementation of support for unary
> numeric operators in the tile system, which we've never had, but
> which some people have been politely requesting for a good long time
> now.
> 
> I offer, attached, a preliminary fileout that actually adds functions to etoys!
> 
> Although this is not quite finished from a number of standpoints,
> it's probably good enough to criticize.  I offer it up to those in
> the community who are comfortable with "filing in" change-sets such
> as this, for your comments.  [Caution: projects saved using this will
> only be intelligible to other Squeak images that also also have this
> code in them.)
> 
> Once you file it in to a Squeakland system, numeric functions will
> become available at any time for any numeric-valued quantity in any
> tile script, in the following two ways:
> 
> (1)  If you bring up the halo on the "pad" that holds any numeric
> value in a script, you'll see in the halo menu a new item "place into
> a function".  (Holding down the shift key as you click through the
> halo layers will make it easier to zero in on the object you want to
> give the halo to.)
> 
> (2)  Also, if you hold down the *shift* key while you click on an
> extension (right-facing) caret, it is interpreted as a request to
> place the numeric tile within a function call.
> 
> As you'll see, when you do either of these, the former numeric
> quantity, whether it be a simple constant or slot, or a numeric
> expression of whatever complexity, will sprout an "abs" function
> around it.  You can then click on the arrows to cycle among the
> available functions (I've provided 15 to start with,) or you can
> click on the function name to get a pop-up of all the choices.
> 
> The dual of this is that if *have* a function and you want to
> eliminate it, bring up the halo on the Function and choose "remove
> function."
> 
> What do you think?
> 
> Cheers,
> 
>   -- Scott
> 
> 
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