Eric,
Yes, I looked at the intersect command, but it performs the action on
the keys not the data from a list. I would have to create an array
element for each integer in the list with the integer as the key.
Sounded like two loops that would run even slower than my example:
repeat for each item theItem in list1
put empty into myArray1[theItem]
end repeat
repeat for each item theItem in list2
put empty into myArray2[theItem]
end repeat
intersect myArray1 with myArray2
if the keys of myArray1 is empty then get false else get true
In actual practice, the above example runs 3 times slower than the
below example for the sample data shown.
However, knowing that Rev had such a command for the keys, I thought
perhaps someone knew of a more clever way to use it, or maybe there
was another way to intersect data.
Dennis
On Jul 8, 2005, at 1:41 PM, Eric Chatonet wrote:
Hi Dennis,
You astonished me!
Are you not the guy who is fascinated by arrays?
And, may be, by the intersect command?
Le 8 juil. 05 à 19:12, Dennis Brown a écrit :
Hello clever Rev programmers,
I have a simple question or maybe it is a simple challenge.
I have two lists of integers. The list are not long, perhaps 5 to
50 items e.g.:
list1="310,423,522,211,107,340,"
list2="311,312,313,318,320,323,325,330,333,337,340,"
I want to find if any of the items in list1 have a match in list2.
I know I could do it with a repeat, something like this:
get false
repeat for each item theItem in list1
if theItem is not among the items of list2 then next repeat
get true
exit repeat
end repeat
I was wondering if it could be done faster without a repeat
through some Rev trick.
Best Regards from Paris,
Eric Chatonet.
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