repeat with i=

[Jim Ault]

On Jul 14, 2011, at 2:12 AM, Keith Clarke wrote:

> ...ah yes, of course, thanks Jim - I forgot that 'delete item y' is  
> not the same as 'delete item *called* y' !
>
> So, would itemoffset help...?
>
> put "1,2,3,4,5,6" into theNumbers
> repeat until theNumbers is empty
> 	put any item theNumbers into n
> 	do something
> 	delete (itemOffset(n, theNumbers)) from theNumbers
> end repeat
>
> I realise that this may not be the most efficient layout (one more  
> line than yours!) but it reads nicely and could help in educational  
> settings when teaching the application of scripts to formulae that  
> use finite n-based series - I'm thinking here about permutations  
> (nCr), combinations (nPr), binomials, factorials, statistical  
> analysis, etc. Just a thought and hopefully not too much of a  
> hijacking of the thread :-)
> Best,

Yes, and you could use a more visual logic...

put "1,2,3,4,5,6" into theNumbers
repeat until sum(theNumbers) is 0
	put any item theNumbers into N
	if N is not 0 then
              do something
	     put 0 into item N of theNumbers
          end if
end repeat



>
> On 14 Jul 2011, at 08:23, Jim Ault wrote:
>
>>
>> On Jul 14, 2011, at 12:05 AM, Keith Clarke wrote:
>>
>>> ...so for a random selection, enforcing the use of all 6 items,  
>>> would this work?
>>>
>>> put "1,2,3,4,5,6" into x
>>> repeat until x is empty
>>> 	put any item of x into y
>>> 	do something
>>> 	delete item y from x
>>> end repeat
>>>
>>>
>>
>> No, since the first pass could choose '2',
>> then the next pass could choose '6'
>> and produce the error "item 6 does not exist.
>>
>> My preference would be to do the
>>
>> put "1,2,3,4,5,6" into theNums
>> sort  items of theNums numeric by random(1000000)
>> repeat for each item Y of theNums
>>     do "some command" & Y
>> end repeat

Jim Ault
Las Vegas