[squeakland] Etoys - arrays/lists?
yoshiki at vpri.org
Wed Oct 12 00:08:53 EDT 2011
At Tue, 11 Oct 2011 21:46:15 -0400,
R.D. Latimer wrote:
> Is there a way to create an array or list of numbers - many numbers, like 100 or 1000 or more?
> From the Illinois website it looks as though a Holder is the only way to do this, copy in a Text object for each array/list element.
> This method doesn't seem to be the way to store large numbers of values into an array or list.
"Doesn't seem to be"... But can you elaborate a little bit more?
It may be actually feasible with Text object. But, yes, such kind of
large collection is not a common Etoys feature.
You could always resort to the textual coding and use full
Collection library. But...
> This may mean also that there are no list accessing means, like to check if a particular value is in a list.
> Thanks for any help,
There is another tricky way to do it with Particles.
I made a project to demonstrate it:
There are 10,000 random number between 0 and 999999, created by the
"setup" script. Then type in a number you would like to query in the
"query" watcher and press "turtle2 try". If the "query" number is
among these 10,000 numbers, "result" will be true. Otherwise, it'll
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